A new Late Ordovician bubble-headed trilobite species from South West Wales and its implications for biostratigraphy

A new species of bubble-headed trilobite, Staurocephalus oliveae sp. nov., is described from 250 specimens collected from a recently discovered locality in the Sholeshook Limestone Formation (upper Katian, Upper Ordovician; Ashgill, Cautleyan Zone 1 equivalent) in the village of Llanddowror, Carma...

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Main Authors: MANUS G. LEIDI, LUCY M.E. MCCOBB, PATRICK D. MCDERMOTT, ALAN W. OWEN
Format: Article
Language:English
Published: Institute of Paleobiology PAS 2024-03-01
Series:Acta Palaeontologica Polonica
Subjects:
Online Access:https://www.app.pan.pl/archive/published/app69/app011202023.pdf
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author MANUS G. LEIDI
LUCY M.E. MCCOBB
PATRICK D. MCDERMOTT
ALAN W. OWEN
author_facet MANUS G. LEIDI
LUCY M.E. MCCOBB
PATRICK D. MCDERMOTT
ALAN W. OWEN
author_sort MANUS G. LEIDI
collection DOAJ
description A new species of bubble-headed trilobite, Staurocephalus oliveae sp. nov., is described from 250 specimens collected from a recently discovered locality in the Sholeshook Limestone Formation (upper Katian, Upper Ordovician; Ashgill, Cautleyan Zone 1 equivalent) in the village of Llanddowror, Carmarthenshire. Although no fully articulated specimens were found, the material is the most abundant and well-preserved of any Ordovician Staurocephalus species known from Britain and Ireland, and enables the complicated 3D structure of its cephalon to be reconstructed. Staurocephalus oliveae sp. nov. is the earliest representative of the genus recorded in Avalonia, following its presumed migration into the area from Laurentia or Baltica. Recognition of this Cautleyan species resurrects the potential usefulness of the long established, widely distributed, Staurocephalus clavifrons as a latest Katian (= Rawtheyan) indicator.
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spelling doaj.art-9b01824ddd6b4355850b5d914909f03b2024-04-22T10:08:36ZengInstitute of Paleobiology PASActa Palaeontologica Polonica1732-24212024-03-01691577210.4202/app.01120.2023A new Late Ordovician bubble-headed trilobite species from South West Wales and its implications for biostratigraphyMANUS G. LEIDI0LUCY M.E. MCCOBB1PATRICK D. MCDERMOTT2ALAN W. OWEN3School of Biosciences, Cardiff University, Cardiff CF10 3AX, Wales, UK.Department of Natural Sciences, Amgueddfa Cymru-National Museum Wales, Cardiff CF10 3NP, Wales, UK.Flat 4, 12 Quay St., Carmarthen, SA31 3JT, Wales, UK.School of Geographical and Earth Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, UK.A new species of bubble-headed trilobite, Staurocephalus oliveae sp. nov., is described from 250 specimens collected from a recently discovered locality in the Sholeshook Limestone Formation (upper Katian, Upper Ordovician; Ashgill, Cautleyan Zone 1 equivalent) in the village of Llanddowror, Carmarthenshire. Although no fully articulated specimens were found, the material is the most abundant and well-preserved of any Ordovician Staurocephalus species known from Britain and Ireland, and enables the complicated 3D structure of its cephalon to be reconstructed. Staurocephalus oliveae sp. nov. is the earliest representative of the genus recorded in Avalonia, following its presumed migration into the area from Laurentia or Baltica. Recognition of this Cautleyan species resurrects the potential usefulness of the long established, widely distributed, Staurocephalus clavifrons as a latest Katian (= Rawtheyan) indicator.https://www.app.pan.pl/archive/published/app69/app011202023.pdftrilobitaphacopidaencrinuridaestaurocephaluslate ordovicianbiostratigraphywalesgreat britain
spellingShingle MANUS G. LEIDI
LUCY M.E. MCCOBB
PATRICK D. MCDERMOTT
ALAN W. OWEN
A new Late Ordovician bubble-headed trilobite species from South West Wales and its implications for biostratigraphy
Acta Palaeontologica Polonica
trilobita
phacopida
encrinuridae
staurocephalus
late ordovician
biostratigraphy
wales
great britain
title A new Late Ordovician bubble-headed trilobite species from South West Wales and its implications for biostratigraphy
title_full A new Late Ordovician bubble-headed trilobite species from South West Wales and its implications for biostratigraphy
title_fullStr A new Late Ordovician bubble-headed trilobite species from South West Wales and its implications for biostratigraphy
title_full_unstemmed A new Late Ordovician bubble-headed trilobite species from South West Wales and its implications for biostratigraphy
title_short A new Late Ordovician bubble-headed trilobite species from South West Wales and its implications for biostratigraphy
title_sort new late ordovician bubble headed trilobite species from south west wales and its implications for biostratigraphy
topic trilobita
phacopida
encrinuridae
staurocephalus
late ordovician
biostratigraphy
wales
great britain
url https://www.app.pan.pl/archive/published/app69/app011202023.pdf
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