Tylocidaris
Sign in to saveTylocidaris is an extinct genus of sea urchins that lived from the Early Cretaceous to the Eocene. Its remains have been found in Europe and North America.
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Tylocidaris is an extinct genus of sea urchins that lived from the Early Cretaceous to the Eocene. Its remains have been found in Europe and North America.
==References== Fossils (Smithsonian Handbooks) by David Ward (Page 177)
Excerpted from Wikipedia’s “Tylocidaris” article, available under the CC BY-SA 4.0 licence.