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Variability in Epistreptophyllum from the middle Jurassic of Kachchh, western India: An open question for the taxonomy of Mesozoic scleractinian corals

Published online by Cambridge University Press:  14 July 2015

D. K. Pandey  and
B. Lathuiliere
D. K. Pandey
Affiliation:
Department of Geology University of Rajasthan, Jaipur 302004, India
B. Lathuiliere
Affiliation:
Laboratoire de Géologie des Ensembles Sédimentaires, URA 157-CNRS, University Nancy 1 B.P. 239, 54506 Vandoeuvre-lès Nancy Cedex, France
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Abstract

Epistreptophyllum cornutiformis Gregory, 1900, is the name assigned to a Middle Jurassic population of scleractinian corals from Kachchh, western India. Measurements of ten variables from 84 specimens of this population have been statistically examined by means of univariate and multivariate analyses. A wide range of variation in corallum shape, septal perforation, lateral septal surface ornamentation, nature of the endotheca, and that of the columella is observed. The great majority of specimens are solitary. The wide range of gradational variation observed in this population corresponds to and includes the morphological characters described for various scleractinian genera such as Protethmos Gregory, Metethmos Gregory, Frechia Gregory, and Epistreptophyllum Milaschewitsch. The assignment of these genera to this later senior synonym genus is supported by the description of a well-preserved topotype from Nattheim. The ornamentation of the septa in Epistreptophyllum is detailed and distances it from typical pennular corals.

Type
Research Article
Information
Journal of Paleontology , Volume 71 , Issue 4 , July 1997 , pp. 564 - 577
Copyright
Copyright © The Paleontological Society 

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