Sphaerapus, A Poorly Known Invertebrate Trace Fossil From Nonmarine Permian and Jurassic Strata of North America

Author: Lucas Spencer G.   Voigt Sebastian   Lerner Allan J.   Rainforth Emma C.  

Publisher: Taylor & Francis Ltd

ISSN: 1042-0940

Source: Ichnos, Vol.20, Iss.3, 2013-07, pp. : 142-152

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Abstract