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Camptosaurus aphanoecetes
Taxonomy
Camptosaurus aphanoecetes was named by Carpenter and Wilson (2008). Its type specimen is CM 11337, a partial skeleton, and it is a 3D body fossil. Its type locality is Dinosaur National Monument Quarry (CM), which is in a Tithonian coarse channel fill sandstone in the Morrison Formation of Utah.
It was recombined as Uteodon aphanoecetes by McDonald (2011), Tweet et al. (2012), McDonald et al. (2012), McDonald (2012), Zheng et al. (2013), Ibiricu et al. (2014), Xu et al. (2018), Madzia et al. (2018), Sánchez-Fenollosa et al. (2021) and Rotatori et al. (2022).
It was recombined as Uteodon aphanoecetes by McDonald (2011), Tweet et al. (2012), McDonald et al. (2012), McDonald (2012), Zheng et al. (2013), Ibiricu et al. (2014), Xu et al. (2018), Madzia et al. (2018), Sánchez-Fenollosa et al. (2021) and Rotatori et al. (2022).
Synonymy list
| Year | Name and author |
|---|---|
| 2008 | Camptosaurus aphanoecetes Carpenter and Wilson p. 232 figs. 3-34 |
| 2008 | Camptosaurus aphanoecetes Ruiz-Omeñaca et al. p. 61 |
| 2009 | Camptosaurus aphanoecetes Galton p. 215 |
| 2011 | Uteodon aphanoecetes McDonald pp. 56 - 60 figs. 6, 7B |
| 2011 | Camptosaurus aphanoecetes Wang et al. p. 140 |
| 2012 | Uteodon aphanoecetes McDonald p. 2 |
| 2012 | Uteodon aphanoecetes McDonald et al. p. 2 |
| 2012 | Uteodon aphanoecetes Tweet et al. p. 321 |
| 2013 | Uteodon aphanoecetes Zheng et al. |
| 2014 | Uteodon aphanoecetes Ibiricu et al. p. 404 |
| 2016 | Camptosaurus aphanocetes Fuentes Vidarte et al. p. 436 |
| 2017 | Camptosaurus aphanoecetes Mocho et al. p. 8 |
| 2018 | Camptosaurus aphanoecetes Carpenter and Galton p. 179 |
| 2018 | Uteodon aphanoecetes Madzia et al. p. 971 |
| 2018 | Camptosaurus aphanoecetes Tweet and Santucci p. 713 |
| 2018 | Uteodon aphanoecetes Xu et al. p. 562 |
| 2019 | Camptosaurus aphanoecetes Ibiricu et al. p. 279 |
| 2020 | Camptosaurus aphanoecetes Dieudonné et al. |
| 2021 | Uteodon aphanoecetes Sánchez-Fenollosa et al. p. 54 |
| 2022 | Uteodon aphanoecetes Rotatori et al. p. 132 |
| 2022 | Camptosaurus aphanoecetes Sánchez-Fenollosa et al. p. 71 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Camptosaurus aphanoecetes Carpenter and Wilson 2008
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. Carpenter and Y. Wilson 2008 | Differs from C. 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. | |
| A. T. McDonald 2011 | Basal styracosternan distinguished by a single autapomorphy: occipital condyle projects farther ventrally than the basal tubera (Fig. 7). Also distinguished from all other iguanodontians except Cumnoria prestwichii by the following unique combination of characters: scapula with acromion process that is convex along its cranial margin (Fig. 3B), convex dorsal margin of scapula (Fig. 3C), convex dorsal margin of ilium, dorsal mar- gin of ilium thickens mediolaterally towards M. iliocaudalis platform, postacetabular process of ilium tapers to a point with break in slope along dorsal margin (Fig. 6A), distal end of ischium forms cranially expanded boot. | |
| K. Carpenter and P. M. Galton 2018 | It differs from C. dispar in the proportionally long, low cervical centra, scapular blade more curved, shallow ilium with a sharply bent preacetabular process, and a straight ischium shaft. |
Measurements
No measurements are available
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| Source: g = genus, subo = suborder, o = order | |||||
| References: Peczkis 1995, Benton 1983, Marsh 1875 | |||||
Age range: Early/Lower Tithonian or 150.80000 to 145.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Tithonian | USA (Utah) | Camptosaurus medius (type locality: 21852) |