Earliest Fossil Record of a Pigmy Rattlesnake (Viperidae: Sistrurus Garman)

Dennis Parmley; J. Alan Holman

doi:10.1670/0022-1511(2007)41[141:EFROAP]2.0.CO;2

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Dennis Parmley,^1,* J. Alan Holman^2,**

¹1Department of Biological and Environmental Sciences, Georgia College and State University, Milledge
²3Michigan State University Museum, East Lansing, Michigan 48824, USA

^*Corresponding Author.
^**Deceased.

Abstract

We report the earliest fossil record of a Pigmy Rattlesnake (Sistrurus) on the basis of a trunk vertebra from the Late Miocene (Clarendonian NALMA) Pratt Slide local fauna of Nebraska. Vertebral characteristics of the genus are discussed, and the fossil was diagnosed mainly by the presence of a zygosphenal spine. This record suggests Sistrurus existed as a distinct lineage prior to the Late Miocene and that the genus has been present on the central Great Plains for at least five million years.

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Dennis Parmley and J. Alan Holman "Earliest Fossil Record of a Pigmy Rattlesnake (Viperidae: Sistrurus Garman)," Journal of Herpetology 41(1), 141-144, (1 March 2007). https://doi.org/10.1670/0022-1511(2007)41[141:EFROAP]2.0.CO;2

Accepted: 1 October 2006; Published: 1 March 2007

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