Evolutionary fauna: Difference between revisions
TomS TDotO (talk | contribs) |
TomS TDotO (talk | contribs) →Paleozoic fauna: disambiguate Articulata (Brachiopoda) |
||
Line 4: | Line 4: | ||
==Paleozoic fauna== |
==Paleozoic fauna== |
||
Fauna II, known as "Paleozoic", described as a "[[Brachiopod]]-rich assemblage", accounts for most of the fossils appearing in the [[Great Ordovician Biodiversification Event]], and largely went extinct in the [[Permian-Triassic extinction event]]. This fauna is marked by fossils of the following classes: [[Articulata]], [[Crinoidea]], [[Ostracoda]], [[Cephalopoda]], [[Anthozoa]], [[Stenolaemata]], [[Stelleroidea]]. |
Fauna II, known as "Paleozoic", described as a "[[Brachiopod]]-rich assemblage", accounts for most of the fossils appearing in the [[Great Ordovician Biodiversification Event]], and largely went extinct in the [[Permian-Triassic extinction event]]. This fauna is marked by fossils of the following classes: [[Articulata (Brachiopoda)|Articulata]], [[Crinoidea]], [[Ostracoda]], [[Cephalopoda]], [[Anthozoa]], [[Stenolaemata]], [[Stelleroidea]]. |
||
==Modern fauna== |
==Modern fauna== |
||
Fauna III, known as "Modern", described as a [[Mollusc]]-rich assemblage", arose largely in the [[Mesozoic-Cenozoic Radiation]], still in progress.The following classes are included: [[Gastropoda]], [[Bivalvia]], [[Osteichthyes]], [[Malacostraca]], [[Echinoidea]], [[Gymnolaemata]], [[Demospongiae]], [[Chondrichthyes]]. |
Fauna III, known as "Modern", described as a [[Mollusc]]-rich assemblage", arose largely in the [[Mesozoic-Cenozoic Radiation]], still in progress.The following classes are included: [[Gastropoda]], [[Bivalvia]], [[Osteichthyes]], [[Malacostraca]], [[Echinoidea]], [[Gymnolaemata]], [[Demospongiae]], [[Chondrichthyes]]. |
Revision as of 12:20, 18 July 2013
The concept of the three great Evolutionary Faunas of marine animals from the Cambrian to the Present (that is, the entire Phanerozoic) was introduced by Jack Sepkoski in 1981 using factor analysis of the fossil record. [1]
Cambrian fauna
Fauna I, known as "Cambrian", described as a "Trilobite-rich assemblage", encompasses the bulk of the fossils which first appeared in the Cambrian explosion, and largely went extinct in the Ordovician-Silurian extinction event, although the genus Lingula has survived to the present. This fauna is marked by fossils of the following classes: Trilobita, Polychaeta, Monoplacophora, Inarticulata.
Paleozoic fauna
Fauna II, known as "Paleozoic", described as a "Brachiopod-rich assemblage", accounts for most of the fossils appearing in the Great Ordovician Biodiversification Event, and largely went extinct in the Permian-Triassic extinction event. This fauna is marked by fossils of the following classes: Articulata, Crinoidea, Ostracoda, Cephalopoda, Anthozoa, Stenolaemata, Stelleroidea.
Modern fauna
Fauna III, known as "Modern", described as a Mollusc-rich assemblage", arose largely in the Mesozoic-Cenozoic Radiation, still in progress.The following classes are included: Gastropoda, Bivalvia, Osteichthyes, Malacostraca, Echinoidea, Gymnolaemata, Demospongiae, Chondrichthyes.
References
- ^ J. J. Sepkosi (1981). "A factor analysis description of the Phanerozoic marine fossil record". Paleobiology. 7: 3–53.
Further reading
- Anthony Hallam (1994). "4. Major temporal changes through the Phanerozoic". An Outline of Panerozoic Biogeography. Oxford Biogeography Series. Oxford: Oxford University Press. pp. 35–50. ISBN 0-19-854060-4.
- Arnold I. Miller (2002). "Diversity of Life Through Time". Encyclopedia of Life Sciences. John Wiley & Sons.
- The Succession of Life in the Sea