A 2ND INCISOSCUTID ARTHRODIRE (PISCES, PLACODERMI) FROM THE LATE DEVONIAN GOGO FORMATION, WESTERN-AUSTRALIA

Authors
LONG JA
Citation
Ja. Long, A 2ND INCISOSCUTID ARTHRODIRE (PISCES, PLACODERMI) FROM THE LATE DEVONIAN GOGO FORMATION, WESTERN-AUSTRALIA, Alcheringa, 18(1-2), 1994, pp. 59-69
Citations number
22
Categorie Soggetti
Paleontology
Journal title
Alcheringa → ACNP
ISSN journal
03115518
Volume
18
Issue
1-2
Year of publication
1994
Pages
59 - 69
Database
ISI
SICI code
0311-5518(1994)18:1-2<59:A2IA(P>2.0.ZU;2-W
Abstract
A new incisoscutid arthrodire is described from the Upper Devonian Gog o Formation of Western Australia as Gogosteus sarahae gen. et sp. nov. It is characterised by its narrow headshield with cheek unit firmly a ttached to skull roof, crushing gnathal plates, deep postnasal plates, elongate anterior lateral plate with deeply embayed postbranchial not ch and squarely cut posterior margin, and fine dermal ornamentation. T he family Incisoscutidae Denison 1984 is redefined to include Incisosc utum ritchiei Dennis & Miles 1981 and Gogosteus gen. nov., and the sup erfamily Incisoscutoidea nov. defined to include Incisoscutidae and Ca muropiscidae.