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Do you see your urchin or crinoid here? Click on image for identification and more information. Cretaceous Articulate Crinoids Isocrinid, Bourgueticrinid and Uintacrinid Orders | | | | Isocrinus annulatus (Roemer) | Dunnicrinus mississippiensis Moore | Uintacrinus socialis Grinnell | Marsupites americanus Springer | Cretaceous Regular Echinoids Echinacea Superorder ( Arbacoids, Salenioids, Cidaroids, Hemicidaroids, Phymosomatoids, and Orthopsids ) | | | | Goniopygus zitteli Clark | Codiopsis stephenson Cooke | Goniophorus scotti Lambert | Salenia texana Credner | | | | | Salenia mexicana Schlüter | Salenia phillipsae Whitney & Kellum | Loriolia rosana Cooke | Tetragramma streeruwitzi (Cragin) | | | | | Tetragramma taffi (Cragin) | Dumblea symmetrica Cragin | Phymosoma texanum (Roemer) | Rachiosoma hondoensis Cooke | | | | | Porosoma reesidei Cooke | Stereocidaris huspethensis Cooke | Phyllacanthus texanus Whitney & Kellum | Orthopsis comalensis Whitney & Kellum | Gnathostome Superorder ( Holectypoids ) | | | | Coenholectypus castilloi (Cotteau) | Coenholectypus planatus (Roemer) | Anorthopygus texanus Cooke | Globator parryi (Hall) | | | | | Globator hancockensis (Whitney & Kellum) | | | | Cretaceous Irregular Echinoids Atelostome Superorder ( Cassiduloids and Holasteroids ) | | | | Hardouinia mortonis (Michelin) | Hardouinia kellumi (Stephenson) | Hardouinia florealis (Morton) | Hardouinia mcglameryae Cooke | | | | | Phyllobrissus cubensis Weisbord | Echinocorys texanus (Cragin) | Holaster simplex Shumard | Cardiaster leonensis Stephenson | | | | | Hemipneustes striatoradiatus (Leske) | Craginaster completa Lambert | | | Spatangoid Superorder ( Micrasterines, Hemiasterines, and Toxasterines ) | | | | Hemiaster cranium Cooke | Palhemiaster calvini (Clark) | Hemiaster whitei Clark | Hemiaster bexari Clark | | | | | Proraster dalli (Clark) | Macraster elegans (Shumard) | Macraster wenoensis Adkins | Macraster washitae Lambert | | | | | Macraster obesus Adkins | Macraster texanus (Roemer) | Heteraster obliquatus (Clark) | Heteraster texanus (Roemer) | | | | | Micraster coranguinum (Leske) | Plesiaster americanus (Stephenson) | | |
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