Holotype

YPM 1860

Apatosaurus ajax

Facts

Catalog number: YPM 1860
Institution: Yale Peabody Museum (YPM)
Year found: 1877
Found by: Arthur Lakes
Locality: Morrison, Colorado (Dinosaur Ridge)
Formation: Morrison Formation

Images

Neck vertebra of the Apatosaurus ajax holotype YPM 1860 in side and front views.Mike Taylor (modified by I. Reid), CC BY 3.0, via Wikimedia Commons, Yale Peabody MuseumCC BY 3.0Source

Excavation history

Partial postcranial skeleton; also the type of the genus. Mixed during collection and shipping with YPM 1840 (Atlantosaurus immanis) from another quarry.

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