Bothriocidaris Explained

Bothriocidaris is an extinct genus of echinoid from the Ordovician. It grew to in size^[1] and fed on plankton.

References

• Dinosaurs to Dodos: An Encyclopedia of Extinct Animals by Don Lessem and Jan Sovak
• Parker, Steve. Dinosaurus: the complete guide to dinosaurs. Firefly Books Inc, 2003. Pg. 55

1. Kolata . Dennis . Strimple . Harrell . Levorson . Calvin . 1977-01-01 . A New Species of Bothriocidaris (Echinoidea) from the Cincinnatian Maquoketa Group of Iowa . Proceedings of the Iowa Academy of Science . 84 . 4 . 146–149 . 0085-2236.