Skip to content Skip to navigation

Article: New chaetetiform trepostome Bryozoa from the Upper Mississippian of the western United States

Publication: Palaeontology
Volume: 31
Part: 2
Publication Date: May 1988
Page(s): 551 566
Author(s): June R. P. Ross
DOI:
Addition Information

How to Cite

ROSS, J. R. P. 1988. New chaetetiform trepostome Bryozoa from the Upper Mississippian of the western United States. Palaeontology31, 2, 551–566.

Online Version Hosted By

The Palaeontological Association (Free Access)

Abstract

Two new bryozoan (ectoproct) genera are part of the fauna of the Late Mississippian carbonate facies in Utah, Idaho, Wyoming, and Montana. Helenopora gen. nov. is widespread and abundant whereas Astralochoma gen. nov. is more restricted and sparse. Gross external features of the bryozoan colonies (size, colony form, and shape of zooecial tubules) resemble chaetetiform colonies. Internal characteristics of the two new genera show them to be bryozoans with distinctive budding patterns. Because of the distinctive features of these two genera, the new families Helenoporidae and Astralochomidae are erected to accommodate them.
PalAss Go! URL: http://go.palass.org/4ed | Twitter: Share on Twitter | Facebook: Share on Facebook | Google+: Share on Google+