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Titolo:
KLEPTOTHULE-RASMUSSENI GEN ET SP-NOV - AN QUESTIONABLE-OLENELLINID-LIKE TRILOBITE FROM THE SIRIUS PASSET FAUNA (BUEN FORMATION, LOWER CAMBRIAN, NORTH GREENLAND)
Autore:
BUDD GE;
Indirizzi:
INST EARTH SCI,DEPT HIST GEOL & PALAEONTOL,NORBYVAGEN 22 S-75236 UPPSALA SWEDEN UNIV CAMBRIDGE,DEPT EARTH SCI CAMBRIDGE CB2 3EQ ENGLAND
Titolo Testata:
Transactions of the Royal Society of Edinburgh. Earth sciences
, volume: 86, anno: 1995,
parte:, 1
pagine: 1 - 12
SICI:
0263-5933(1995)86:<1:KGES-A>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Keywords:
CAMBRIAN; EXCEPTIONAL PRESERVATION; SIRIUS PASSET; TRILOBITA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
NO
Recensione:
Indirizzi per estratti:
Citazione:
G.E. Budd, "KLEPTOTHULE-RASMUSSENI GEN ET SP-NOV - AN QUESTIONABLE-OLENELLINID-LIKE TRILOBITE FROM THE SIRIUS PASSET FAUNA (BUEN FORMATION, LOWER CAMBRIAN, NORTH GREENLAND)", Transactions of the Royal Society of Edinburgh. Earth sciences, 86, 1995, pp. 1-12

Abstract

The Lower Cambrian Sirius Passet fauna from Peary Land, North Greenland, is a rich repository of soft-bodied and poorly-sclerotised fossils. A new arthropod from the fauna, Kleptothule rasmusseni, is described. The animal is broadly trilobite-like, possessing a trilobed exoskeleton which is divided into distinct cephalic, thoracic and caudal regions. However, it is unusual in that it possesses a large number of segments, and demonstrates pronounced cephalic segmentation, and a very narrow cephalon and thorax. There is some evidence that the exoskeleton was lightly mineralised. Kleptothule is compared to some of the olenellinid trilobites, especially those taxa that possess a many-segmented 'opisthothorax'. Its morphology raises some issues discussed by Lauterbach (1983) in his assignment of some olenellids to the stem-group of the chelicerates. However, it is not considered herein that such a model can be supported. A complete analysis of basal trilobites and the stem-group leading to them must await a fuller description of key taxa from China and Greenland.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 15:54:20