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A new genus and species of cornulitid tubeworm from the Hirnantian (Late Ordovician) of Estonia

Olev Vinn, Mark A. Wilson and Ursula Toom
A new genus and species of cornulitid tubeworm from the Hirnantian (Late Ordovician) of Estonia
Journal of Paleontology (January 2024) 98 (1): 40-46

Abstract

A new cornulitid genus and species, Porkuniconchus fragilis new genus and species, is here described from the Aarina Formation (Hirnantian, Porkuni Regional Stage) of northern Estonia. This new taxon differs from most cornulitids by having a fusiform ornamentation pattern that is somewhat similar to that of Kolihaia. All studied specimens are attached to a carbonate hardground. The hardground fauna is by abundance and encrustation area dominated by cornulitids. Other encrusters are represented only by a single sheet-like cystoporate bryozoan. The cornulitid specimens represent different growth stages, which suggest that the hardground was continuously colonized by cornulitid larvae. The high encrustation density indicates that the studied hardground may have represented a high-productivity site in the Hirnantian of the Baltic Basin. UUID: http://zoobank.org/623afcc3-ab32-4e8f-be14-a1093cba4ae6


ISSN: 0022-3360
EISSN: 1937-2337
Coden: JPALAZ
Serial Title: Journal of Paleontology
Serial Volume: 98
Serial Issue: 1
Title: A new genus and species of cornulitid tubeworm from the Hirnantian (Late Ordovician) of Estonia
Affiliation: University of Tartu, Department of Geology, Tartu, Estonia
Pages: 40-46
Published: 202401
Text Language: English
Publisher: Cambridge University Press for the Paleontological Society, Lawrence, KS, United States
References: 49
Accession Number: 2024-030119
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: IGCP Project No. 735
Illustration Description: illus. incl. strat. col., 1 plate, sketch map
N59°04'60" - N59°04'60", E24°45'00" - E24°45'00"
Secondary Affiliation: College of Wooster, USA, United StatesTallinn University of Technology, EST, Estonia
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2024, American Geosciences Institute. Abstract, Copyright, The Paleontological Society. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 2024
Program Name: IGCPInternational Geological Correlation Programme
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