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1 September 2003 PORACANTHODID ACANTHODIAN FROM THE UPPER SILURIAN (PRIDOLI) OF NEVADA
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Abstract
Dissociated remains of the acanthodian Poracanthodes punctatus are described from Upper Silurian (Pridoli) limestones of the Roberts Mountains Formation at Pete Hanson Creek, Eureka County, Nevada. The vertebrate microremains in sample residues comprise scales, a dentigerous jaw bone fragment, and a fin spine fragment assigned to P. punctatus, plus one possible acanthothoracid placoderm scale. Some macroremains from the same locality are also assigned to P. punctatus. This taxon has been nominated as a zone fossil for the Silurian vertebrate biozonal scheme, and its presence has been recorded throughout the circum-Arctic region. Identification of the taxon in Nevada extends its known geographic range.
and CAROLE J. BURROW "PORACANTHODID ACANTHODIAN FROM THE UPPER SILURIAN (PRIDOLI) OF NEVADA," Journal of Vertebrate Paleontology 23(3), (1 September 2003). https://doi.org/10.1671/1888
Received: 3 April 2002; Accepted: 1 October 2002; Published: 1 September 2003
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