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camel astragalus
 
© Harry Pristis 2014

camel astragalus


Harry Pristis

This is a Pleistocene camelid ankle bone, the astragalus. These bones may preserve when other postcranial bones are lost because they are dense, with minimum vascularization.

Based on size, I think this astagalus is from either Hemiauchenia sp. or from Palaeolama mirifica. There may be a way to distinguish between the astragali of these two taxa, but I don't know what those characteristics are. Help me out if you can.

 

Infraorder TYLOPODA . . . . . . . . . . . . . . .

Superfamily CAMELOIDEA . . . . . . . . .

. . . Family CAMELIDAE [camels, llamas]

. . . . . . . . . . . . . . . . Subfamily AEPYCAMELINAE [giraffe camels]

. . . . . . . . . . . . (several gen. and sp.)

. . . . . . . . Subfamily FLORIDATRAGULINAE

. . . . . . . . . . . . . . . . . . . Floridatragulus sp. [two species]

Subfamily CAMELINAE

. . . . . . . . . . . . .Tribe LAMINI [llamas]

. . . . . . . . . . . . . . . . . . . . . . Hemiauchenia sp. [five species]

. . . . . . . . . . . . . Palaeolama mirifica

. . . . . . . . . . . . . . . .Tribe CAMELINI [camels]

. . . . . . . . . . . . . . . . . . . . . . Procamelus sp. [two species]

. . . . . . . . . . . . . Megatylopus sp.

Copyright

© Harry Pristis 2014
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