A new actinolepid arthrodire (Class Placodermi) from the lower Devonian Sevy Dolomite, East-Centrai Nevada

Heidemarie G. Johnson; David K. Elliott; James H. Wittke

doi:10.1006/zjls.1999.0206

A new actinolepid arthrodire (Class Placodermi) from the lower Devonian Sevy Dolomite, East-Centrai Nevada

Heidemarie G. Johnson, David K. Elliott, James H. Wittke

Earth and Sustainability

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Abstract

A new genus and species of actinolepid arthrodire, Aleosteus eganensis, is described from the Lower Devonian (Late Emsian) Sevy Dolomite in the Egan Range of east-central Nevada. A cladistic analysis of the family Actinolepidae is presented for the first time and shows the Baltic Actinolepis species form the primitive sister-group of all other actinolepids. Rapid evolution of the Actinolepidae during the Lochkovian is reflected in the dispersal of the family around the Old Red Sandstone Continent at this time followed by the development of endemic faunas through the Lower Devonian and into the Middle Devonian.

Original language	English (US)
Pages (from-to)	241-266
Number of pages	26
Journal	Zoological Journal of the Linnean Society
Volume	129
Issue number	2
DOIs	https://doi.org/10.1006/zjls.1999.0206
State	Published - Jun 2000

Keywords

Actinolepidae
Arthrodira
Devonian
Systematics
Taxonomy

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Animal Science and Zoology

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10.1006/zjls.1999.0206

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title = "A new actinolepid arthrodire (Class Placodermi) from the lower Devonian Sevy Dolomite, East-Centrai Nevada",

abstract = "A new genus and species of actinolepid arthrodire, Aleosteus eganensis, is described from the Lower Devonian (Late Emsian) Sevy Dolomite in the Egan Range of east-central Nevada. A cladistic analysis of the family Actinolepidae is presented for the first time and shows the Baltic Actinolepis species form the primitive sister-group of all other actinolepids. Rapid evolution of the Actinolepidae during the Lochkovian is reflected in the dispersal of the family around the Old Red Sandstone Continent at this time followed by the development of endemic faunas through the Lower Devonian and into the Middle Devonian.",

keywords = "Actinolepidae, Arthrodira, Devonian, Systematics, Taxonomy",

author = "Johnson, {Heidemarie G.} and Elliott, {David K.} and Wittke, {James H.}",

note = "Funding Information: This research was supported by Northern Arizona University Organized Research, by National Geographic Society Grants 3582-87 and 3826-88 to D.K.E., and by awards from the Friday Lunch Clubbe and the Paleontological Society to H.G.J., all of which support is gratefully acknowledged. We are grateful to the collecting assistance provided by S. D. Emslie, C. Force, J. T. Gregory, R. E. Kirby, and C. D. Smith. This paper was substantially improved by the reviews of E. Mark-Kurik and an unidentified reviewer.",

year = "2000",

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doi = "10.1006/zjls.1999.0206",

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AU - Johnson, Heidemarie G.

AU - Elliott, David K.

AU - Wittke, James H.

N1 - Funding Information: This research was supported by Northern Arizona University Organized Research, by National Geographic Society Grants 3582-87 and 3826-88 to D.K.E., and by awards from the Friday Lunch Clubbe and the Paleontological Society to H.G.J., all of which support is gratefully acknowledged. We are grateful to the collecting assistance provided by S. D. Emslie, C. Force, J. T. Gregory, R. E. Kirby, and C. D. Smith. This paper was substantially improved by the reviews of E. Mark-Kurik and an unidentified reviewer.

PY - 2000/6

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N2 - A new genus and species of actinolepid arthrodire, Aleosteus eganensis, is described from the Lower Devonian (Late Emsian) Sevy Dolomite in the Egan Range of east-central Nevada. A cladistic analysis of the family Actinolepidae is presented for the first time and shows the Baltic Actinolepis species form the primitive sister-group of all other actinolepids. Rapid evolution of the Actinolepidae during the Lochkovian is reflected in the dispersal of the family around the Old Red Sandstone Continent at this time followed by the development of endemic faunas through the Lower Devonian and into the Middle Devonian.

AB - A new genus and species of actinolepid arthrodire, Aleosteus eganensis, is described from the Lower Devonian (Late Emsian) Sevy Dolomite in the Egan Range of east-central Nevada. A cladistic analysis of the family Actinolepidae is presented for the first time and shows the Baltic Actinolepis species form the primitive sister-group of all other actinolepids. Rapid evolution of the Actinolepidae during the Lochkovian is reflected in the dispersal of the family around the Old Red Sandstone Continent at this time followed by the development of endemic faunas through the Lower Devonian and into the Middle Devonian.

KW - Actinolepidae

KW - Arthrodira

KW - Devonian

KW - Systematics

KW - Taxonomy

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A new actinolepid arthrodire (Class Placodermi) from the lower Devonian Sevy Dolomite, East-Centrai Nevada

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Keywords

ASJC Scopus subject areas

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