Significance of a Late Ordovician Triarthrus (Trilobita, Olenidae) from New South Wales, Australia

Patrick M. Smith; Izak Schoon; Lachlan J. Hart; Russell D. C. Bicknell; Melanie J. Hopkins; Yong Yi Zhen

Significance of a Late Ordovician Triarthrus (Trilobita, Olenidae) from New South Wales, Australia

Patrick M. Smith, Izak Schoon, Lachlan J. Hart, Russell D. C. Bicknell, Melanie J. Hopkins, Yong Yi Zhen

School of Natural Sciences

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Abstract

Triarthrus novoaustralis, a new species of olenid trilobite, is described from the Malachis Hill Formation (mid-Katian, Late Ordovician) near Keenans Bridge and Canobolas State Forest, west of Orange, New South Wales, Australia. This is the second named (and youngest) olenid occurrence from the entire Ordovician of eastern Gondwana. Additionally, its recognition enables revised stratigraphic correlation and enhanced biostratigraphic constraint of the upper Keenans Bridge section to the pre- Paraorthograptus pacificus graptolite Zone of early Bolindian age, based on the co-occurrence of Triarthrus with age-diagnostic graptolites from Canobolas State Forest.

Original language	English
Pages (from-to)	57-70
Number of pages	14
Journal	Linnean Society of New South Wales
Volume	146
Early online date	22 Nov 2024
Publication status	Published - 2024

Bibliographical note

Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

Bolindian
Keenans Bridge
Macquarie Arc
Molong
New South Wales
Volcanic Belt

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https://openjournals.library.sydney.edu.au/LIN/article/view/20378

Cite this

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title = "Significance of a Late Ordovician Triarthrus (Trilobita, Olenidae) from New South Wales, Australia",

abstract = "Triarthrus novoaustralis, a new species of olenid trilobite, is described from the Malachis Hill Formation (mid-Katian, Late Ordovician) near Keenans Bridge and Canobolas State Forest, west of Orange, New South Wales, Australia. This is the second named (and youngest) olenid occurrence from the entire Ordovician of eastern Gondwana. Additionally, its recognition enables revised stratigraphic correlation and enhanced biostratigraphic constraint of the upper Keenans Bridge section to the pre- Paraorthograptus pacificus graptolite Zone of early Bolindian age, based on the co-occurrence of Triarthrus with age-diagnostic graptolites from Canobolas State Forest.",

keywords = "Bolindian, Keenans Bridge, Macquarie Arc, Molong, New South Wales, Volcanic Belt",

author = "Smith, \{Patrick M.\} and Izak Schoon and Hart, \{Lachlan J.\} and Bicknell, \{Russell D. C.\} and Hopkins, \{Melanie J.\} and Zhen, \{Yong Yi\}",

note = "Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher. ",

year = "2024",

language = "English",

volume = "146",

pages = "57--70",

journal = "Linnean Society of New South Wales",

issn = "1839-7263",

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T1 - Significance of a Late Ordovician Triarthrus (Trilobita, Olenidae) from New South Wales, Australia

AU - Smith, Patrick M.

AU - Schoon, Izak

AU - Hart, Lachlan J.

AU - Bicknell, Russell D. C.

AU - Hopkins, Melanie J.

AU - Zhen, Yong Yi

N1 - Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2024

Y1 - 2024

N2 - Triarthrus novoaustralis, a new species of olenid trilobite, is described from the Malachis Hill Formation (mid-Katian, Late Ordovician) near Keenans Bridge and Canobolas State Forest, west of Orange, New South Wales, Australia. This is the second named (and youngest) olenid occurrence from the entire Ordovician of eastern Gondwana. Additionally, its recognition enables revised stratigraphic correlation and enhanced biostratigraphic constraint of the upper Keenans Bridge section to the pre- Paraorthograptus pacificus graptolite Zone of early Bolindian age, based on the co-occurrence of Triarthrus with age-diagnostic graptolites from Canobolas State Forest.

AB - Triarthrus novoaustralis, a new species of olenid trilobite, is described from the Malachis Hill Formation (mid-Katian, Late Ordovician) near Keenans Bridge and Canobolas State Forest, west of Orange, New South Wales, Australia. This is the second named (and youngest) olenid occurrence from the entire Ordovician of eastern Gondwana. Additionally, its recognition enables revised stratigraphic correlation and enhanced biostratigraphic constraint of the upper Keenans Bridge section to the pre- Paraorthograptus pacificus graptolite Zone of early Bolindian age, based on the co-occurrence of Triarthrus with age-diagnostic graptolites from Canobolas State Forest.

KW - Bolindian

KW - Keenans Bridge

KW - Macquarie Arc

KW - Molong

KW - New South Wales

KW - Volcanic Belt

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M3 - Article

SN - 1839-7263

VL - 146

SP - 57

EP - 70

JO - Linnean Society of New South Wales

JF - Linnean Society of New South Wales

ER -

Significance of a Late Ordovician Triarthrus (Trilobita, Olenidae) from New South Wales, Australia

Abstract

Bibliographical note

Keywords

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