An early Cretaceous pellet.
Sanz JL, Chiappe LM, Fernández-Jalvo Y, Ortega F, Sánchez-Chillón B, Poyato-Ariza FJ, Pérez-Moreno BP.
Sanz JL, et al.
Nature. 2001 Feb 22;409(6823):998-1000. doi: 10.1038/35059172.
Nature. 2001.
PMID: 11234054
No abstract available.