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A new Arenig (Ordovician) graptolite fauna from the Kerman District, east-central Iran

Published online by Cambridge University Press:  01 May 2009

R. B. Rickards ,
M. A. Hamedi  and
A. J. Wright
R. B. Rickards
Affiliation:
Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK
M. A. Hamedi
Affiliation:
Department of Geology, University of Wollongong, Northfields Avenue, Wollongong 2522, Australia
A. J. Wright
Affiliation:
Department of Geology, University of Wollongong, Northfields Avenue, Wollongong 2522, Australia
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Abstract

A single slab of silicified silty and cross-bedded mudstone from the Katkoyeh Formation, east-central Iran yields Yutagraptus cf. mantuanus Riva which indicates a late Arenig age. The slab also bears Dictyonema ghodsiae sp. nov., regarded as the only unequivocally planktonic dendroid from post-Tremadoc strata. The sicula is surrounded by at least twelve vesicular bodies which constitute a raft of floats. These are the only certain floats yet identified in the Order Dendroidea, and one of very few cases known in the Class Graptolithina.

Type
Articles
Information
Geological Magazine , Volume 131 , Issue 1 , January 1994 , pp. 35 - 42
Copyright
Copyright © Cambridge University Press 1994

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