Bothriocidaris

{{Short description|Extinct genus of sea urchins}}

{{Taxobox

| fossil_range = {{fossil_range|Ordovician}}

| regnum = Animalia

| phylum = Echinodermata

| classis = Echinoidea

| ordo = Bothriocidaroida

| familia = Bothriocidaridae

| genus = Bothriocidaris

| genus_authority = Eichwald, 1860

}}

Bothriocidaris is an extinct genus of echinoid from the Ordovician. It grew to {{convert|1.6|cm}} in size{{Cite journal |last=Kolata |first=Dennis |last2=Strimple |first2=Harrell |last3=Levorson |first3=Calvin |date=1977-01-01 |title=A New Species of Bothriocidaris (Echinoidea) from the Cincinnatian Maquoketa Group of Iowa |url=https://scholarworks.uni.edu/pias/vol84/iss4/7 |journal=Proceedings of the Iowa Academy of Science |volume=84 |issue=4 |pages=146–149 |issn=0085-2236}} and fed on plankton.

Image:Britannica Echinoderma 5.jpg

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