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New Cambrian and Lower Ordovician monoplacophorans from the Ozark Uplift, Missouri

Published online by Cambridge University Press:  20 May 2016

Bruce L. Stinchcomb
Affiliation:
Department of Geology, St. Louis Community College at Florissant Valley, 3400 Pershall Road, St. Louis, Missouri, 63135
Nicholas A. Angeli
Affiliation:
Department of Geology, St. Louis Community College at Florissant Valley, 1715 Stemwood Way, Fenton, Missouri 63026

Abstract

Seven new monoplacophoran genera and species are described and figured from Cambrian and Lower Ordovician strata of the Ozark Uplift of Missouri; Biloboconus frizelli, Ulrichoconus bonneterrense, Potosiplina delorensis, Gayneoconus echolsi, Irondalia irondalensis, Titanoplina meramecensis, and Wildernessia inexpectans. A new species of Kirengella, K. oregonensis, is described, and Hypseloconus compressus (Ulrich and Bridge, 1930, and H. expansus Stinchcomb, 1986, are assigned to the genus Kirengella. The morphology of Kirengella is compared to highly arched forms of the plated mollusk genus Preacanthochiton and is found to converge with them. Association with stromatolite reefs of both Kirengella and plated mollusks is noted.

Type
Research Article
Copyright
Copyright © The Paleontological Society

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