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Camarasaurus grandis Marsh 1877 (diplodocid)

Reptilia - Dinosauria - Rebbachisauridae

PaleoDB taxon number: 67181

Alternative combinations: Apatosaurus grandis, Camarosaurus grandis, Morosaurus grandis

Synonyms: Astrodon montanus Marsh 1896 (no. 80888), Camarasaurus impar Marsh 1878 (no. 83001), Camarasaurus robustus Marsh 1878 (no. 83000), Morosaurus impar Marsh 1878 (no. 52967), Morosaurus robustus Marsh 1878 (no. 64747), Pleurocoelus montanus Marsh 1896 (no. 67182)

Full reference: O. C. Marsh. 1877. Notice of new dinosaurian reptiles from the Jurassic formation. American Journal of Science and Arts 14:514-516

Belongs to Camarasaurus according to E. Tschopp et al. 2015

Sister taxa: Camarasaurus agilis, Camarasaurus lentus, Camarasaurus lewisi, Camarasaurus supremus

Type specimens:

  • Camarasaurus grandis: YPM 1905. Its type locality is Quarry 1, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian wet floodplain claystone in the Morrison Formation of Wyoming.
  • Morosaurus impar: YPM 1905. Its type locality is Quarry 1, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian wet floodplain claystone in the Morrison Formation of Wyoming.
  • Morosaurus robustus: YPM 1902. Its type locality is Quarry 1, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian wet floodplain claystone in the Morrison Formation of Wyoming.
  • Pleurocoelus montanus: YPM 1908. Its type locality is Quarry 1, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian wet floodplain claystone in the Morrison Formation of Wyoming.

Ecology: ground dwelling herbivore

Average measurements (in mm): femur length 1050.0, humerus length 864.0, ischium length 488.0, scapula 1093.0 x 635.0, ulna length 628.0

Estimated body mass: 4.90 tons based on femur length