Pronunciation: SEE-duh-ro-SOR-us Meaning: Cedar lizard Author/s: Tidwell et al. (1999) Synonyms: None known First Discovery: Utah, USA Chart Position: 367
The slender-for-a-macronarian fossils of Cedarosaurus were discovered in the same area as Venenosaurus and Brontomerus, though at a much lower (and thus older) level than either. It was lacking a head, a neck, much in the way of overlapping parts that can be compared to other sauropods and hardly anything with a feature you could confidently single-out as unique... aside from five score and fifteen plant-grinding gastroliths (gizzard stones), all but three of which were discovered in what would have been its gut before it died, lost bits and turned into a disarticulated jumble.
(Carol Weiskopf's Cedar Mountain lizard)EtymologyCedarosaurus is derived from "Cedar" (for the Cedar Mountain Formation, where the type specimen was collected) and the Greek "sauros" (lizard). The species epithet, weiskopfae (WIES-kop-fee), honors the late Carol Weiskopf for her work in the field and lab.
DiscoveryThe remains of Cedarosaurus were discovered at "Yellow Cat Quarry" in the Yellow Cat Member of the Cedar Mountain Formation, Price County, Utah, USA, by Denver Museum of Natural History volunteer Billy Kinneer in 1997. The holotype (DMNH 39045) is a partial, skull-and-neckless skeleton and 115 gastroliths, 112 of which were found within the rib cage.
A hind limb from the Trinity Group previously referred to "Pleurocoelus" by Langston in 1974 was assigned to Cedarosaurus by Michael D. D'Emic in 2012.