xiphiplastron

xiphiplastron

(ˌzɪfɪˈplæstrən)
n, pl -tra (-trə)
(Zoology) zoology the fourth lateral plate of a turtle's plastron
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ROM-42053 is a complete right xiphiplastron with a well-defined femoral-anal sulcus on its ventral surface (Fig.
ROM-42056 is a left xiphiplastron. The femoral-anal sulcus is well preserved on its ventral surface (Fig.
Abbreviations for the plates (in bold): En, entoplastron; Ep, epiplastron; Hp, hypoplastron; Hy, hyoplastron; Xi, xiphiplastron. Abbreviations for the scutes (in normal font): Ab, abdominal; An, anal; Fe, femoral; Gu, gular; Hu, humeral; Pc, pectoral.
-- One nuchal, UNSM 117936: one right hyoplastron and one left xiphiplastron UNSM 56911.
-- A fossil hyoplastron and xiphiplastron of Emydoidea blandingii was first reported from the Devils Nest Airport site by Parmley (1992).
In addition, animals from Sims Pond were drilled through the lateral aspect of the xiphiplastron to indicate initial capture site.
Devils Nest: four plate fragments, MSUVP 1304; two neurals, 19 costal fragments, one left xiphiplastron, 12 plate fragments, UNSM 56912.