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This list of prehistoric echinoderms is an attempt to create a comprehensive listing of all genera that have ever been included in the Echinoderms that have been preserved as fossils. This list excludes purely vernacular terms.
The Eocrinoidea were an extinct class of echinoderms that lived between the Early Cambrian and Late Silurian periods. They are the earliest known group of stalked, brachiole-bearing echinoderms, and were the most common echinoderms during the Cambrian. The earliest genera had a short holdfast and irregularly structured plates. Later forms had a ...
Pages in category "Paleozoic echinoderms" The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes. A. Aacocrinus; B.
Pages in category "Paleozoic echinoderms of North America" The following 10 pages are in this category, out of 10 total. This list may not reflect recent changes. A.
Cystoidea was defined as a class of extinct paleozoic blastozoan echinoderms established to encompass stalked taxa that were neither crinoids nor blastoids. It was shown to be polyphyletic in the late 1960s but continues to be used even in recent (as of 2022) literature to discuss both rhombiferans and diploporitans. [1]
Pages in category "Lists of prehistoric echinoderms" ... This list may not reflect recent changes. 0–9. 2014 in echinoderm paleontology; 2018 in echinoderm ...
Paleozoic echinoderms (13 C, 12 P) S. Prehistoric echinoderm stubs (1 C, 166 P) Pages in category "Prehistoric echinoderms" This category contains only the following ...
Helicoplacus (often misspelled Helioplacus) is the earliest well-studied fossil echinoderm.Fossil plates are known from several regions. Complete specimens were found in Lower Cambrian strata of the White Mountains of California.