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Document Type

Research

Keywords

Echinoidea, Bothriocidaris maquoketensis, Maquoketa Group, Upper Ordovician, Iowa

Abstract

A new species of echinoid , Bothriocidaris maquoketensis, has been discovered in the Cincinnatian (Upper Ordovician) Fort Atkinson Formation, Maquoketa Group, of northeastern Iowa. The new species is characterized by two widely spaced primary perforate tubercles on opposite sides of the peripodia and by numerous paired interambulacral plates. This occurrence extends the geographic and stratigraphic range of Bothriocidaris in North America.

Publication Date

December 1977

Journal Title

Proceedings of the Iowa Academy of Science

Volume

84

Issue

4

First Page

146

Last Page

149

Copyright

© Copyright 1977 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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