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A new cryptostome bryozoan Ptilotrypa from the Upper Ordovician Yong Limestone Formation: Tethyan sequence of Kumaun Higher Himalaya, India

Published online by Cambridge University Press:  12 February 2019

Narendra K. Swami ,
Andrej Ernst Open the ORCID record for Andrej Ernst [Opens in a new window] ,
Satish C. Tripathi ,
Prasenjit Barman ,
S.K. Bharti  and
Y.P. Rana
Narendra K. Swami
Affiliation:
Himalayan Geology Division, Geological Survey of India, Sector-E, Aliganj, Lucknow 226024, Uttar Pradesh, India , ,
Andrej Ernst
Affiliation:
Institut für Geologie, Universität Hamburg, Bundesstr. 55, D-20146 Hamburg, Germany
Satish C. Tripathi
Affiliation:
Himalayan Geology Division, Geological Survey of India, Sector-E, Aliganj, Lucknow 226024, Uttar Pradesh, India , , Geological Survey of India, GSI Complex, Bandlaguda, Hyderabad 500068, Telangana, India
Prasenjit Barman
Affiliation:
Himalayan Geology Division, Geological Survey of India, Sector-E, Aliganj, Lucknow 226024, Uttar Pradesh, India , ,
S.K. Bharti
Affiliation:
Palaeontology Division, 15A/B, Kyd Street, NCEGR, Central Headquarter, Geological Survey of India, Kolkata, India
Y.P. Rana
Affiliation:
Himalayan Geology Division, Geological Survey of India, Sector-E, Aliganj, Lucknow 226024, Uttar Pradesh, India , ,
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Abstract

A new species of the Paleozoic bryozoan genus Ptilotrypa of the order Cryptostomata is described from the lower part of the Yong Limestone Formation, Katian, Upper Ordovician of the Kumaun Tethys Himalaya: Ptilotrypa bajpaii new species. The presence of the genus Ptilotrypa in the Tethyan Himalaya suggests paleogeographic connections to the Upper Ordovician of North America and, consequently, Upper Ordovician age for the lower part of the Yong Limestone Formation. This species displays a reticulate colony shape, which suggests an efficient filtering capacity in an environment with a high primary production. Morphological peculiarities and systematic assignment of the genus Ptilotrypa are discussed.

UUID: http://zoobank.org/898276c8-2924-4da2-ae96-3392cb2ebbc3

Type
Taxonomic note
Information
Journal of Paleontology , Volume 93 , Issue 3 , May 2019 , pp. 585 - 591
Copyright
Copyright © 2019, The Paleontological Society 

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