Trilobites from the mid-Darriwilian (Middle Ordovician) of the Amadeus Basin, central Australia

Patrick M. Smith; John R. Laurie

doi:10.1080/03115518.2021.1914727

Trilobites from the mid-Darriwilian (Middle Ordovician) of the Amadeus Basin, central Australia

Patrick M. Smith, John R. Laurie

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Sixteen species of trilobites are described from the Middle Ordovician (mid-Darriwilian, Da2) Stairway Sandstone and Stokes Siltstone at multiple spot localities from the Amadeus Basin, Northern Territory, central Australia. New trilobite taxa described include two new genera: Ghanaspis gen. nov. and Iridis gen. nov.; as well as five new species; Eisarkaspis jonesi sp. nov., Ghanaspis ritchiei gen. et sp. nov., Iridis schoonorum gen. et sp. nov., Lycophron titan sp. nov., and Norasaphus (Norasaphus) patersoni sp. nov. Of these, Lycophron titan sp. nov. is the largest species of trilobite so far documented from Australia and possibly the third largest in the world. Also redescribed is Basilicus thorntoni [=Asaphus (Megalaspis?) thorntoni] based on the recently rediscovered type material and additional specimens from elsewhere in the basin.

Original language	English
Pages (from-to)	140-177
Number of pages	38
Journal	Alcheringa
Volume	45
Issue number	2
DOIs	https://doi.org/10.1080/03115518.2021.1914727
Publication status	Published - 2021

Keywords

Stairway sandstone
stokes siltstone
Larapinta Group
Reedocalymeninae
Asaphidae
Northern Territory

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10.1080/03115518.2021.1914727

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title = "Trilobites from the mid-Darriwilian (Middle Ordovician) of the Amadeus Basin, central Australia",

abstract = "Sixteen species of trilobites are described from the Middle Ordovician (mid-Darriwilian, Da2) Stairway Sandstone and Stokes Siltstone at multiple spot localities from the Amadeus Basin, Northern Territory, central Australia. New trilobite taxa described include two new genera: Ghanaspis gen. nov. and Iridis gen. nov.; as well as five new species; Eisarkaspis jonesi sp. nov., Ghanaspis ritchiei gen. et sp. nov., Iridis schoonorum gen. et sp. nov., Lycophron titan sp. nov., and Norasaphus (Norasaphus) patersoni sp. nov. Of these, Lycophron titan sp. nov. is the largest species of trilobite so far documented from Australia and possibly the third largest in the world. Also redescribed is Basilicus thorntoni [=Asaphus (Megalaspis?) thorntoni] based on the recently rediscovered type material and additional specimens from elsewhere in the basin.",

keywords = "Stairway sandstone, stokes siltstone, Larapinta Group, Reedocalymeninae, Asaphidae, Northern Territory",

author = "Smith, {Patrick M.} and Laurie, {John R.}",

year = "2021",

doi = "10.1080/03115518.2021.1914727",

language = "English",

volume = "45",

pages = "140--177",

journal = "Alcheringa",

issn = "0311-5518",

publisher = "Taylor & Francis",

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T1 - Trilobites from the mid-Darriwilian (Middle Ordovician) of the Amadeus Basin, central Australia

AU - Smith, Patrick M.

AU - Laurie, John R.

PY - 2021

Y1 - 2021

N2 - Sixteen species of trilobites are described from the Middle Ordovician (mid-Darriwilian, Da2) Stairway Sandstone and Stokes Siltstone at multiple spot localities from the Amadeus Basin, Northern Territory, central Australia. New trilobite taxa described include two new genera: Ghanaspis gen. nov. and Iridis gen. nov.; as well as five new species; Eisarkaspis jonesi sp. nov., Ghanaspis ritchiei gen. et sp. nov., Iridis schoonorum gen. et sp. nov., Lycophron titan sp. nov., and Norasaphus (Norasaphus) patersoni sp. nov. Of these, Lycophron titan sp. nov. is the largest species of trilobite so far documented from Australia and possibly the third largest in the world. Also redescribed is Basilicus thorntoni [=Asaphus (Megalaspis?) thorntoni] based on the recently rediscovered type material and additional specimens from elsewhere in the basin.

AB - Sixteen species of trilobites are described from the Middle Ordovician (mid-Darriwilian, Da2) Stairway Sandstone and Stokes Siltstone at multiple spot localities from the Amadeus Basin, Northern Territory, central Australia. New trilobite taxa described include two new genera: Ghanaspis gen. nov. and Iridis gen. nov.; as well as five new species; Eisarkaspis jonesi sp. nov., Ghanaspis ritchiei gen. et sp. nov., Iridis schoonorum gen. et sp. nov., Lycophron titan sp. nov., and Norasaphus (Norasaphus) patersoni sp. nov. Of these, Lycophron titan sp. nov. is the largest species of trilobite so far documented from Australia and possibly the third largest in the world. Also redescribed is Basilicus thorntoni [=Asaphus (Megalaspis?) thorntoni] based on the recently rediscovered type material and additional specimens from elsewhere in the basin.

KW - Stairway sandstone

KW - stokes siltstone

KW - Larapinta Group

KW - Reedocalymeninae

KW - Asaphidae

KW - Northern Territory

UR - http://www.scopus.com/inward/record.url?scp=85109046157&partnerID=8YFLogxK

U2 - 10.1080/03115518.2021.1914727

DO - 10.1080/03115518.2021.1914727

M3 - Article

AN - SCOPUS:85109046157

VL - 45

SP - 140

EP - 177

JO - Alcheringa

JF - Alcheringa

SN - 0311-5518

IS - 2

ER -

Trilobites from the mid-Darriwilian (Middle Ordovician) of the Amadeus Basin, central Australia

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Keywords

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