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GEOREF RECORD

Lyellian bryozoan percentages and the fossil record of the Recent Bryozoan fauna

Alan Stanley Horowitz and Joseph F. Pachut
Lyellian bryozoan percentages and the fossil record of the Recent Bryozoan fauna
Palaios (October 1994) 9 (5): 500-505

Abstract

Although general percentages for Recent species of bryozoans in Cenozoic faunas have been published by several authors and were reviewed by Stanley (1979), we present percentages calculated from a number of post-1950 faunal studies of Cenozoic bryozoans. Variability among faunas of the same age is not great and the increase through the Cenozoic in the percentage of bryozoan species currently in the modern fauna is monotonic when calculated per million years of each Cenozoic epoch. The 12.5% of the Recent bryozoan fauna with a fossil record is the same as recorded by Jelly (1889) over a century ago. This contrasts greatly with Valentine's (1989) data (77%) for the fossil record of recent molluscs from the Californian biogeographic province. The average duration of Recent species having a fossil record is 12.2 MY calculated from the midpoint of the earliest Cenozoic epoch in which each species occurs.


ISSN: 0883-1351
Serial Title: Palaios
Serial Volume: 9
Serial Issue: 5
Title: Lyellian bryozoan percentages and the fossil record of the Recent Bryozoan fauna
Affiliation: Indiana University, Department of Geological Sciences, Bloomington, IN, United States
Pages: 500-505
Published: 199410
Text Language: English
Publisher: Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
References: 45
Accession Number: 1995-067030
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 4 tables
Secondary Affiliation: Purdue University at Indianapolis, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by SEPM (Society for Sedimentary Geology), Tulsa, OK, United States
Update Code: 199524
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