[D] Camptosaurus aphanoecetes
Describer
Carpenter & Wilson, Y., 2008
Time
Jurassic Late Tithonian
Classification
Ornithischia Ornithopoda Iguanodontia [Styracosterna]
Diet
Herbivore
Fossilsite
Morrison Formation, Middle of the Brushy Basin Member, East end of Carnegie Quarry at Dinosaur National Monument, Uintah County, Utah, US
Fall Under
Uteodon aphanoecetes
Info
Uteodon aphanoecetes (McDonald 2011) > Camptosaurus aphanoecetes (Carpenter & Wilson, Y., 2008)
Etymology
From aphanoe- (Greek) meaning “hidden” and -cetes (Greek) meaning “to dwell”, as in to “dwell in plain sight” in reference to the new species having been “hidden in plain sight” because it was on exhibit for over 75 years.
Holotype
CM 11337 partial, articulated skeleton containing eight cervicals, 16 dorsals, four sacrals, 14 caudals, both scapulae, left coracoid, both humeri, left radius, left ulna, left carpals and manus, both ilia, both pubes, both ischia, both femora, both tibiae, complete and partial fibulae, six cervicals ribs, 31 dorsal ribs, and ossified tendons.
Paratype material
CM 15780 right femur, tibia, fibula, astragulus, metatarsal; CM 41689 right(?) incomplete sternal plate; CM 79050 left pubis and ischium; DINO 556 right dentary; DINO 1030 left articulated coracoid and scapula; DINO 1032 right scapula
Referred material
CM 21707 left tibia; CM 21723 right femur; CM 21724 left partial femur; CM 21725 two metatarsals; CM 21778 distal end of ischium; DINO 499 part of mandible with several teeth; DINO 1021 incomplete portion of right pubis; DINO 1091 left femur; DINO 2457 left metatarsal III; DINO 2461 left metatarsal II; DINO 2558 right tibia, and right tibia (possibly Camptosaurus). Other material cataloged under DINO may belong to C. aphanoecetes but was either inaccessible or cannot be separated from Dryosaurus.
Diagnosis
Differs from Camptosaurus dispar in the following: mandibular symphysis short and more vertically oriented, coronoid process relatively taller; postzygapophyses of axis extend well beyond posterior face of centrum, axis neural spine above the postzygapophyses laterally compressed, not expanded laterally forming deep pocket; cervical centra shorter compared to height, especially in mid-cervicals; mid- and posterior cervicals amphiplatyan to weakly plani-concave, not opisthocoelous; cervical 7 centrum wedge-shaped in lateral view; neural arches of posterior cervicals very tall; anterior dorsal centra shorter compared to height; anterior caudal centra not angled posteroventrally, mid-caudal centrum with small chevron facet; mid-caudal vertebra neural spine long and slender, with postzygapophysis located high on spine; scapular blade arched in profile, not straight, and distal end steeply sloped; deltopectoral crest a low triangle, not prominent; ilium with more vertical pubic peduncle, dorsal rim arched, prepubic process proportionally longer, postpubic process lower, with rounded distal end; pubis with posterior projecting iliac peduncle forming large acetabular notch; ischium with small distal foot.
Carpenter & Wilson, Y., 2008
Time
Jurassic Late Tithonian
Classification
Ornithischia Ornithopoda Iguanodontia [Styracosterna]
Diet
Herbivore
Fossilsite
Morrison Formation, Middle of the Brushy Basin Member, East end of Carnegie Quarry at Dinosaur National Monument, Uintah County, Utah, US
Fall Under
Uteodon aphanoecetes
Info
Uteodon aphanoecetes (McDonald 2011) > Camptosaurus aphanoecetes (Carpenter & Wilson, Y., 2008)
Etymology
From aphanoe- (Greek) meaning “hidden” and -cetes (Greek) meaning “to dwell”, as in to “dwell in plain sight” in reference to the new species having been “hidden in plain sight” because it was on exhibit for over 75 years.
Holotype
CM 11337 partial, articulated skeleton containing eight cervicals, 16 dorsals, four sacrals, 14 caudals, both scapulae, left coracoid, both humeri, left radius, left ulna, left carpals and manus, both ilia, both pubes, both ischia, both femora, both tibiae, complete and partial fibulae, six cervicals ribs, 31 dorsal ribs, and ossified tendons.
Paratype material
CM 15780 right femur, tibia, fibula, astragulus, metatarsal; CM 41689 right(?) incomplete sternal plate; CM 79050 left pubis and ischium; DINO 556 right dentary; DINO 1030 left articulated coracoid and scapula; DINO 1032 right scapula
Referred material
CM 21707 left tibia; CM 21723 right femur; CM 21724 left partial femur; CM 21725 two metatarsals; CM 21778 distal end of ischium; DINO 499 part of mandible with several teeth; DINO 1021 incomplete portion of right pubis; DINO 1091 left femur; DINO 2457 left metatarsal III; DINO 2461 left metatarsal II; DINO 2558 right tibia, and right tibia (possibly Camptosaurus). Other material cataloged under DINO may belong to C. aphanoecetes but was either inaccessible or cannot be separated from Dryosaurus.
Diagnosis
Differs from Camptosaurus dispar in the following: mandibular symphysis short and more vertically oriented, coronoid process relatively taller; postzygapophyses of axis extend well beyond posterior face of centrum, axis neural spine above the postzygapophyses laterally compressed, not expanded laterally forming deep pocket; cervical centra shorter compared to height, especially in mid-cervicals; mid- and posterior cervicals amphiplatyan to weakly plani-concave, not opisthocoelous; cervical 7 centrum wedge-shaped in lateral view; neural arches of posterior cervicals very tall; anterior dorsal centra shorter compared to height; anterior caudal centra not angled posteroventrally, mid-caudal centrum with small chevron facet; mid-caudal vertebra neural spine long and slender, with postzygapophysis located high on spine; scapular blade arched in profile, not straight, and distal end steeply sloped; deltopectoral crest a low triangle, not prominent; ilium with more vertical pubic peduncle, dorsal rim arched, prepubic process proportionally longer, postpubic process lower, with rounded distal end; pubis with posterior projecting iliac peduncle forming large acetabular notch; ischium with small distal foot.