English Stereom Cited by user Ornithopsis on 08 Apr 2020 Stereom is a calcium carbonate material that makes up the internal skeletons found in all echinoderms, both living and fossilized forms.
English Ctenoimbricata Cited by user Ornithopsis on 08 Apr 2020 Ctenoimbricata is an extinct genus of bilaterally symmetrical echinoderm, which lived during the early Middle Cambrian period of what is now Spain.
English Ctenocystoidea Cited by user Ornithopsis on 03 Apr 2020 Ctenocystoidea is an extinct clade of echinoderms, which lived during the Cambrian and Ordovician periods.
English 2012 in paleontology Cited by user 178.180.101.180 on 27 Jun 2012 Note: In 2012 International Code of Zoological Nomenclature was amended, with new regulations allowing the publication of new names and nomenclatural acts in zoology…