Template:Infobox geologic timespan

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Header and Title
PreꞒ Ꞓ O S D C P T J K Pg N
Chronology
...
Etymology
...
Usage information
...
Definition
...
Atmospheric and climatic data
...
See below for details

Usage

This infobox template is used to generate an infobox on the right-hand side of articles pertaining to:
a) specific spans of geologic time accepted for general use (i.e Cambrian),
b) regionally used subdivisions of geologic time (i.e Arenig),
c) proposed subdivisions of geologic time (i.e Chaotian),
d) subdivisions of extraterrestrial geologic time (i.e Nectarian).

Parameters

Header and Title Parameters

name
image_map
image_outcrop
image_art [Restrictive parameters (above)] color = Cenozoic top_bar = all time time_start = 654 time_end = 321

The following parameters control the images, horizontal timeline bar, and title text at the top of the infobox template.

Header and Title Parameters

Parameter	Function
name	The text at the top of the template.
color	Determines the color behind the title using Template:Period color. A valid period name string is required for this to work. For custom RGB values, see manual_set_color.
manual_color	Sets the color behind the title with RGB values.
top_bar	Determines the variety of horizontal timeline bar below the title text. Defaults to a horizontal Phanerozoic timeline when not invoked. Current accepted values are: - mercury/mercurial (Mercurial geologic timeline) - moon/lunar (Lunar geologic timeline) - mars/martian (Martian geologic timeline) - long fossil/long/all time (complete timeline of earth's history) (NOTE: Upper/lower case does not matter for these values.)
earliest	Adds a translucent green bar to the solid green bar of the horizontal timeline, extending to the earliest possible timeframe the time span could be considered as occupying. It is recommended not to use this parameter unless there is ongoing dispute involving the time span's boundaries. See Template:Geological range for more information.
latest	Adds a translucent green bar to the solid green bar of the horizontal timeline, extending to the latest possible timeframe the time span could be considered as occupying. It is recommended not to use this parameter unless there is ongoing dispute involving the time span's boundaries. See Template:Geological range for more information.
top_bar_ref	Inserts a reference into the text above the timeline bar.
time_start	The time when the geologic time span starts, in millions of years.
time_start_prefix	Used to add a ~ in front of the displayed numerical start time. Should not be used for other purposes.
time_start_uncertainty	The level of uncertainty on the measurement of time span start time.
time_end	The time when the geologic time span ends, in millions of years.
time_end_prefix	Used to add a ~ in front of the displayed numerical end time. Should not be used for other purposes.
time_end_uncertainty	The level of uncertainty on the measurement of time span end time.
top_bar_prefix	Adds text before the "xxx Ma" text above the horizontal timeline. It is recommended not to use this parameter unless absolutely necessary. See Template:Geological range for more information.
top_bar_ps	Adds text after the "xxx Ma" text above the horizontal timeline. It is recommended not to use this parameter unless absolutely necessary. See Template:Geological range for more information.
image_map	Reconstruction of the Earth as it appeared during the geologic time span.
caption_map	Caption for the above image.
image_outcrop	Picture of a rock outcrop with rocks dating to the geologic time span.
caption_outcrop	Caption for the above image.
image_art	Reconstruction of a landscape/ecosystem as it may have appeared during the time span.
caption_art	Caption for the above image.

Chronology Parameters

Chronology
{{TIMELINE graphical timeline|embedded=yes|titlecolour=lightgrey|timespan_name=|chrono_unit=}}
Part of	part_of
Preceded by	before
Followed by	after
Subdivisions	subdivisions
Proposed redefinition(s)	proposed_boundaries1 proposed_boundaries1_ref proposed_boundaries2 proposed_boundaries2_ref proposed_boundaries3 proposed_boundaries3_ref
Proposed subdivisions	proposed_subdivision1 proposed_subdivision1_coined proposed_subdivision2 proposed_subdivision2_coined proposed_subdivision3 proposed_subdivision3_coined
Former subdivisions	former_subdivisions
Formerly part of	formerly_part_of
Partially contained in	partially_contained_in
Partially contains	partially_contains

The following parameters produce results that display in the "Chronology" section of the infobox. (Note that "proposed_subdivision1" and "proposed_subdivision1_coined" are the first in a series of parameters that goes sequentially in name (proposed_subdivision2 and proposed_subdivision2_coined, etc). They are not listed to avoid redundancy.)

Chronology Parameters

Parameter	Function
timeline	Places a pre-made vertical timeline in the infobox.
part_of	Use to list all subdivisions of geologic time that the time span is a part of. (NOTE: Only use when a timeline is currently not available)
before	Use to list the time span that comes before the time span in question. (NOTE: Only use when a timeline is currently not available)
after	Use to list the time span that comes after the time span in question. (NOTE: Only use when a timeline is currently not available)
subdivisions	Use to list all subdivisions of the geologic time span (NOTE: Only use when a timeline is currently not available)
proposed_boundaries1	Use to list a possible redefinition of the timespan's borders (see Siderian for and example)
proposed_boundaries1_ref	Use to list the group/individual who proposed the possible redefinition.
proposed_subdivision1	Use to list a proposed subdivision of the time span.
proposed_subdivision1_coined	Use to list the group/individual who proposed the subdivision.
proposed_part1	Use to list a subdivision of time that the time span has been proposed to become part of. (See Siderian for example usage)
proposed_part1_ref	Use to list the group/individual who proposed the change.
proposed_subdivision1	A subdivision that was proposed for the individual time span.
proposed_subdivision1_coined	The original proposer(s) of the subdivision
former_subdivisions	Use to list all subdivisions of the geologic time span that are no longer used with the time span.
formerly_part_of	Use to list all geologic time spans that the article's topic was originally part of.
partially_contained_in	Use to list all geologic time spans that the article topic's bounds cross (See Example)
partially_contains	Use to list all geologic time span subdivisions that the article topic's bounds cross

Etymology Parameters

Etymology
Chronostratigraphic name	strat_name
Geochronological name	chrono_name
Name formality	name_formality
Name ratified	name_accept_date
Alternate spelling(s)	alternate_spellings
Synonym(s)	synonym1 synonym1_coined synonym2 synonym2_coined synonym3 synonym3_coined
Nickname(s)	nicknames
Former name(s)	former_names
Proposed name(s)	proposed_names

The following parameters produce results that display in the "Etymology" section of the infobox. (Note that "synonym1" and "synonym1_coined" are the first in a series of parameters that goes sequentially in name (synonym2 and synonym2_coined, etc). They are not listed to avoid redundancy.)

Naming Parameters

Parameter	Function
chrono_name	Geochronological name for the time span in question.
strat_name	Chronostratigraphic Name
name_formality	Whether the name given to the timespan is a placeholder (informal) or is a final name (formal). (mainly used for ICS time spans)
name_accept_date	Name ratification date. Used mainly for ICS time subdivisons, though it can be used if there is a regional organization that accepted its usage.
alternate_spellings	Alternate Spellings for the geologic time span.
synonym1	A synonym for the time span's accepted name.
synonym1coined	The original proposer(s) of the synonym
nicknames	Use to list nicknames for the time span. (Example: the Mesozoic has often been deemed in popular culture as the "Age of Dinosaurs")
former_names	Formerly used names for the geologic time span.
proposed_names	Proposed names for the geologic time span.

Usage Information Parameters

Usage information
Celestial body	celestial_body
Regional usage	usage
Time scale(s) used	timescales_used
Formerly used by	formerly_used_by
Not used by	not_used_by

The following parameters produce results that display in the "Usage Information" section of the infobox.

Usage Information Parameters

Parameter	Function
celestial_body	The celestial body to which the time span applies. Some celestial objects will automatically link to their respective articles when entered (upper/lower case ignored). These are: - Mercury - Venus - Earth - Moon - Mars
usage	How the time span in question is used (it applies only regionally, globally, is only a proposed subdivision, etc.)
timescales_used	What timescales the time span is used in. (i.e North American, ICS)
used_by	Specific countries/entities that use the time span officially. (NOTE: Only use if a minority of countries/entities use the time span officially! Any officially ratified ICS time interval should NOT use this parameter.)
formerly_used_by	Use only if the time span was once used in an official capacity by one country/entity, but has fallen out of favor.
not_used_by	Specific countries/entities that do not use the time span officially. (NOTE: Only use if a minority of countries/entities don't use the time span officially! Unlike the above "used_by" parameter, this can be used with officially ratified ICS time intervals, but only if applicable).

Definition Parameters

Definition
Chronological unit	chrono_unit
Stratigraphic unit	strat_unit
First proposed by	proposed_by
Time span formality	timespan_formality
Type section	type_section
Lower boundary definition	lower_boundary_def
Lower boundary definition candidates	lower_def_candidates
Lower boundary GSSP candidate section(s)	lower_gssp_candidates
Lower boundary GSSP	lower_gssp_location lower_gssp_coords
Lower GSSP ratified	lower_gssp_accept_date
Lower boundary GSSA	lower_gssa_location lower_gssa_coords
Lower GSSA ratified	lower_gssa_accept_date
Upper boundary definition	upper_boundary_def
Upper boundary definition candidates	upper_def_candidates
Upper boundary GSSP candidate section(s)	upper_gssp_candidates
Upper boundary GSSP	upper_gssp_location upper_gssp_coords
Upper GSSP ratified	upper_gssp_accept_date
Upper boundary GSSA	upper_gssa_location upper_gssa_coords
Upper GSSA ratified	upper_gssa_accept_date

The following parameters produce results that display in the "Definition" section of the infobox.

Definition Parameters

Parameter	Function
chrono_unit	The chronostratigraphic classification of the time span (i.e era, period, epoch, etc.)
strat_unit	The stratigraphic classification of the time span (i.e erathem, system, series, etc.)
proposed_by	First proposer of the time span.
timespan_formality	Whether the timespan as a whole is considered a formal or informal division of time. For name formality, see Etymology.
type_section	The section of rock originally used to describe the time span in question. See Type locality (geology) for a more detailed explanation.
lower_boundary_def	The critical event (biological, geological, etc.) that marks the start of the time span.
lower_gssp_location	The location of the GSSP for the lower boundary of the time span. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
lower_gssp_coords	The coordinates of the GSSP of the lower boundary of the time span. Use Template:Coord to fill this value. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
lower_gssp_accept_date	The date the GSSP for the lower boundary of the time span was accepted. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
lower_gssa_location	The location of the GSSA for the lower boundary of the time span. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
lower_gssa_coords	The coordinates of the GSSA of the lower boundary of the time span. Use Template:Coord to fill this value. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
lower_gssa_accept_date	The date the GSSA for the lower boundary of the time span was accepted. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
lower_stratotype_location	The location of the stratotype for the lower boundary of the time span. (NOTE: use this parameter only on non-ICS time span articles.)
upper_boundary_def	The critical event (biological, geological, etc.) that marks the end of the time span.
upper_gssp_location	The location of the GSSP for the upper boundary of the time span. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
upper_gssp_coords	The coordinates of the GSSP of the upper boundary of the time span. Use Template:Coord to fill this value. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
upper_gssp_accept_date	The date the GSSP for the upper boundary of the time span was accepted. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
upper_gssa_location	The location of the GSSA for the upper boundary of the time span. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
upper_gssa_coords	The coordinates of the GSSA of the upper boundary of the time span. Use Template:Coord to fill this value. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
upper_gssa_accept_date	The date the GSSA for the upper boundary of the time span was accepted. (NOTE: This should be used on ICS time span articles only. Non-ICS time spans should not use this parameter.)
upper_stratotype_location	The location of the stratotype for the upper boundary of the time span. (NOTE: use this parameter only on non-ICS time span articles.)

Atmospheric and Climatic Data Parameters

Atmospheric and climatic data
Mean atmospheric O2 content	c. 42 vol % (210 % of modern)
Mean atmospheric CO2 content	c. 43 ppm (0 times pre-industrial)
Mean surface temperature	c. 44 °C (30 °C above modern)
Sea level above present day	sea_level

The following parameters produce results that display in the "Atmospheric and Climatic Data" section of the infobox.

Atmospheric and Climatic Data Parameters

Parameter	Function
o2	Mean atmospheric O2 content over the time span's duration as a percentage of modern level.
co2	Mean atmospheric CO2 content over the time span's duration in parts per million (ppm).
temp	Mean surface temperature over time span duration in °C.
sea_level	Sea level above present day, can use {{convert}} if desired
sea_level_m	Numeric quantity of sea level above or below present day, in meters.

Blank Syntax (ICS Time Span)

{{Infobox geologic timespan
| name                         = 
| color                        =
| top_bar                      =
| time_start                   =
| time_start_prefix            =
| time_start_uncertainty       =
| time_end                     =
| time_end_prefix              =
| time_end_uncertainty         =
| image_map                    =
| caption_map                  =
| image_outcrop                =
| caption_outcrop              =
| image_art                    =
| caption_art                  =
<!--Chronology-->  
| timeline                     =
| proposed_boundaries1         =
| proposed_boundaries1_ref     =
| proposed_boundaries2         =
| proposed_boundaries2_ref     =
| proposed_boundaries3         =
| proposed_boundaries3_ref     =
| proposed_subdivision1        =
| proposed_subdivision1_coined =
| proposed_subdivision2        =
| proposed_subdivision2_coined =
| proposed_subdivision3        =
| proposed_subdivision3_coined =
| former_subdivisions          =
| formerly_part_of             =
| partially_contained_in       =
| partially_contains           =
<!--Etymology-->
| chrono_name                  =
| strat_name                   =
| name_formality               =
| name_accept_date             =
| alternate_spellings          =
| synonym1                     =
| synonym1_coined              =
| synonym2                     =
| synonym2_coined              =
| synonym3                     =
| synonym3_coined              =
| nicknames                    =
| former_names                 =
| proposed_names               =
<!--Usage Information--> 
| celestial_body               = earth
| usage                        = Global ([[International Commission on Stratigraphy|ICS]])
| timescales_used              = ICS Time Scale
| formerly_used_by             =
| not_used_by                  =
<!--Definition-->
| chrono_unit                  =
| strat_unit                   =
| proposed_by                  =
| type_section                 =
| timespan_formality           =
| lower_boundary_def           =
| lower_def_candidates         =
| lower_gssp_candidates        =
| lower_gssp_location          =
| lower_gssp_coords            =
| lower_gssp_accept_date       =
| upper_boundary_def           =
| upper_def_candidates         =
| upper_gssp_candidates        =
| upper_gssp_location          =
| upper_gssp_coords            =
| upper_gssp_accept_date       =
<!--Atmospheric and Climatic Data-->
| o2                           =
| co2                          =
| temp                         =
| sea_level                    =
}}

Blank Syntax (General/Other)

{{Infobox geologic timespan
| name                         = 
| color                        =
| manual_color                 =
| top_bar                      =
| time_start                   =
| time_start_prefix            =
| time_start_uncertainty       =
| time_end                     =
| time_end_prefix              =
| time_end_uncertainty         =
| earliest                     =
| latest                       =
| top_bar_ref                  =
| top_bar_prefix               =
| top_bar_ps                   =
| image_map                    =
| caption_map                  =
| image_outcrop                =
| caption_outcrop              =
| image_art                    =
| caption_art                  =
<!--Chronology-->
| timeline                     =
| subdivisions                 =
| proposed_subdivision1        =
| proposed_subdivision1_coined =
| proposed_subdivision2        =
| proposed_subdivision2_coined =
| proposed_subdivision3        =
| proposed_subdivision3_coined =
| former_subdivisions          =
| formerly_part_of             =
| partially_contained_in       =
| partially_contains           =
<!--Etymology-->
| chrono_name                  =
| strat_name                   =
| alternate_spellings          =
| synonym1                     =
| synonym1_coined              =
| synonym2                     =
| synonym2_coined              =
| synonym3                     =
| synonym3_coined              =
| former_names                 =
| proposed_names               =
<!--Usage Information-->
| celestial_body               =
| usage                        =
| timescales_used              =
| used_by                      =
| formerly_used_by             =
| not_used_by                  =
<!--Definition-->
| chrono_unit                  =
| strat_unit                   =
| proposed_by                  =
| type_section                 =
| lower_boundary_def           =
| lower_stratotype_location    =
| upper_boundary_def           =
| upper_stratotype_location    =
<!--Atmospheric and Climatic Data-->
| o2                           =
| co2                          =
| temp                         =
| sea_level                    =
}}

Tracking categories

• Category:Pages using infobox geologic timespan with unknown parameters (0)

Template Data

TemplateData

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. See a monthly parameter usage report for Template:Infobox geologic timespan in articles based on its TemplateData. TemplateData for Infobox geologic timespan Infobox for interval of time for geology Template parameters[Edit template data] Parameter Description Type Status name name The text at the top of the template. String optional color color Determines the color behind the title using Template:Period color. A valid period name string is required for this to work. For custom RGB values, see manual_color. String optional manual_color manual_color Sets the color behind the title with RGB values. String optional top_bar top_bar Determines the variety of horizontal timeline bar below the title text. Defaults to a horizontal Phanerozoic timeline when not invoked. Suggested values mercury moon mars long String optional earliest earliest Adds a translucent green bar to the solid green bar of the horizontal timeline, extending to the earliest possible timeframe the time span could be considered as occupying. String optional latest latest Adds a translucent green bar to the solid green bar of the horizontal timeline, extending to the latest possible timeframe the time span could be considered as occupying. String optional top_bar_ref top_bar_ref Inserts a reference into the text above the timeline bar. String optional time_start time_start The time when the geologic time span starts, in millions of years. Number optional time_start_prefix time_start_prefix Used to add a ~ in front of the displayed numerical start time Suggested values ~ String optional time_start_uncertainty time_start_uncertainty The level of uncertainty on the measurement of time span start time. String optional time_end time_end The time when the geologic time span ends, in millions of years. Number optional time_end_prefix time_end_prefix Used to add a ~ in front of the displayed numerical end time. Suggested values ~ String optional time_end_uncertainty time_end_uncertainty The level of uncertainty on the measurement of time span end time. String optional image_map image_map Reconstruction of the Earth as it appeared during the geologic time span. Content optional caption_map caption_map Caption for image_map String optional image_outcrop image_outcrop Picture of a rock outcrop with rocks dating to the geologic time span. Content optional caption_outcrop caption_outcrop Caption for image_outcrop String optional image_art image_art Reconstruction of a landscape/ecosystem as it may have appeared during the time span. Content optional caption_art caption_art Caption for image_art String optional timeline timeline Places a pre-made vertical timeline in the infobox Example Jurassic Page name optional part_of part_of All subdivisions of geologic time that the time span is a part of. String optional before before The time span that comes before the time span in question String optional after after The time span that comes after the time span in question. String optional subdivisions subdivisions All subdivisions of the geologic time span String optional proposed_boundaries1 proposed_boundaries1 A possible redefinition of the timespan's borders String optional proposed_boundaries1_ref proposed_boundaries1_ref The group/individual who proposed the possible redefinition. String optional proposed_boundaries2 proposed_boundaries2 A possible redefinition of the timespan's borders String optional proposed_boundaries2_ref proposed_boundaries2_ref The group/individual who proposed the possible redefinition. String optional proposed_boundaries3 proposed_boundaries3 A possible redefinition of the timespan's borders String optional proposed_boundaries3_ref proposed_boundaries3_ref The group/individual who proposed the possible redefinition. String optional proposed_boundaries4 proposed_boundaries4 A possible redefinition of the timespan's borders String optional proposed_boundaries4_ref proposed_boundaries4_ref The group/individual who proposed the possible redefinition. String optional proposed_boundaries5 proposed_boundaries5 A possible redefinition of the timespan's borders String optional proposed_boundaries5_ref proposed_boundaries5_ref The group/individual who proposed the possible redefinition. String optional proposed_subdivision1 proposed_subdivision1 A proposed subdivision of the time span. String optional proposed_subdivision1_coined proposed_subdivision1_coined The group/individual who proposed the subdivision. String optional proposed_subdivision2 proposed_subdivision2 A proposed subdivision of the time span. String optional proposed_subdivision2_coined proposed_subdivision2_coined The group/individual who proposed the subdivision. String optional proposed_subdivision3 proposed_subdivision3 A proposed subdivision of the time span. String optional proposed_subdivision3_coined proposed_subdivision3_coined The group/individual who proposed the subdivision. String optional proposed_subdivision4 proposed_subdivision4 A proposed subdivision of the time span. String optional proposed_subdivision4_coined proposed_subdivision4_coined The group/individual who proposed the subdivision. String optional proposed_subdivision5 proposed_subdivision5 A proposed subdivision of the time span. String optional proposed_subdivision5_coined proposed_subdivision5_coined The group/individual who proposed the subdivision. String optional proposed_part1 proposed_part1 no description Unknown optional proposed_part1_ref proposed_part1_ref no description Unknown optional proposed_part2 proposed_part2 no description Unknown optional proposed_part2_ref proposed_part2_ref no description Unknown optional proposed_part3 proposed_part3 no description Unknown optional proposed_part3_ref proposed_part3_ref no description Unknown optional proposed_part4 proposed_part4 no description Unknown optional proposed_part4_ref proposed_part4_ref no description Unknown optional proposed_part5 proposed_part5 no description Unknown optional proposed_part5_ref proposed_part5_ref no description Unknown optional former_subdivisions former_subdivisions no description Unknown optional formerly_part_of formerly_part_of no description Unknown optional partially_contained_in partially_contained_in no description Unknown optional partially_contains partially_contains no description Unknown optional chrono_name chrono_name no description Unknown optional strat_name strat_name no description Unknown optional name_formality name_formality no description Unknown optional name_accept_date name_accept_date no description Unknown optional alternate_spellings alternate_spellings no description Unknown optional synonym1 synonym1 no description Unknown optional synonym1_coined synonym1_coined no description Unknown optional synonym2 synonym2 no description Unknown optional synonym2_coined synonym2_coined no description Unknown optional synonym3 synonym3 no description Unknown optional synonym3_coined synonym3_coined no description Unknown optional synonym4 synonym4 no description Unknown optional synonym4_coined synonym4_coined no description Unknown optional synonym5 synonym5 no description Unknown optional synonym5_coined synonym5_coined no description Unknown optional nicknames nicknames no description Unknown optional former_names former_names no description Unknown optional proposed_names proposed_names no description Unknown optional celestial_body celestial_body no description Unknown optional usage usage no description Unknown optional timescales_used timescales_used no description Unknown optional used_by used_by no description Unknown optional formerly_used_by formerly_used_by no description Unknown optional not_used_by not_used_by no description Unknown optional chrono_unit chrono_unit no description Unknown optional strat_unit strat_unit no description Unknown optional proposed_by proposed_by no description Unknown optional type_section type_section no description Unknown optional lower_boundary_def lower_boundary_def no description Unknown optional lower_gssp_location lower_gssp_location no description Unknown optional lower_gssp_coords lower_gssp_coords no description Unknown optional lower_gssp_accept_date lower_gssp_accept_date no description Unknown optional lower_gssa_location lower_gssa_location no description Unknown optional lower_gssa_coords lower_gssa_coords no description Unknown optional lower_gssa_accept_date lower_gssa_accept_date no description Unknown optional lower_stratotype_location lower_stratotype_location no description Unknown optional upper_boundary_def upper_boundary_def no description Unknown optional upper_gssp_location upper_gssp_location no description Unknown optional upper_gssp_coords upper_gssp_coords no description Unknown optional upper_gssp_accept_date upper_gssp_accept_date no description Unknown optional upper_gssa_location upper_gssa_location no description Unknown optional upper_gssa_coords upper_gssa_coords no description Unknown optional upper_gssa_accept_date upper_gssa_accept_date no description Unknown optional upper_stratotype_location upper_stratotype_location no description Unknown optional o2 o2 Oxygen concentration in the atmosphere, in percent Number optional co2 co2 Carbon dioxide concentration in the atmosphere, in ppm Number optional temp temp Global mean temperature in C Number optional sea_level sea_level Difference in sea level to present day. Can accept a string for template calls String optional sea_level_m sea_level_m Difference in sea level to present day, in meters Number optional

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