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Osmakasaurus depressus
Taxonomy
Camptosaurus depressus was named by Gilmore (1909). Its type specimen is USNM 4753 and is a 3D body fossil. Its type locality is Calico Canyon (USNM), which is in a Barremian terrestrial horizon in the Lakota Formation of South Dakota.
It was recombined as Osmakasaurus depressus by McDonald (2011), Zheng et al. (2013), Verdú et al. (2015), Fuentes Vidarte et al. (2016), Herne et al. (2019), Verdú et al. (2021) and Rotatori et al. (2022); it was recombined as Planicoxa depressus by Kirkland et al. (2016); it was misspelled as Planicoxa depressus by Galton (2009), Carpenter and Ishida (2010) and Diedrich (2011); it was recombined as Planicoxa depressa by Carpenter and Wilson (2008) and Ji and Zhang (2022).
It was recombined as Osmakasaurus depressus by McDonald (2011), Zheng et al. (2013), Verdú et al. (2015), Fuentes Vidarte et al. (2016), Herne et al. (2019), Verdú et al. (2021) and Rotatori et al. (2022); it was recombined as Planicoxa depressus by Kirkland et al. (2016); it was misspelled as Planicoxa depressus by Galton (2009), Carpenter and Ishida (2010) and Diedrich (2011); it was recombined as Planicoxa depressa by Carpenter and Wilson (2008) and Ji and Zhang (2022).
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Camptosaurus depressus Gilmore pp. 292-295 figs. 45-47 |
| 1916 | Camptosaurus depressus Mook p. 147 |
| 1925 | Camptosaurus depressus Gilmore p. 393 |
| 1930 | Camptosaurus depressus Hay p. 205 |
| 1934 | Camptosaurus depressus Stromer p. 63 |
| 1964 | Camptosaurus depressus Kuhn p. 9 |
| 1979 | Camptosaurus depressus Galton and Jensen p. 3 |
| 1980 | Camptosaurus depressus Galton and Powell p. 438 |
| 1981 | Camptosaurus depressus Bartholomai and Molnar p. 343 |
| 1983 | Camptosaurus depressus Weishampel and Weishampel p. 44 |
| 1989 | Camptosaurus depressus Weishampel and Bjork p. 64 |
| 1990 | Camptosaurus depressus Norman and Weishampel p. 530 |
| 1994 | Camptosaurus depressus Chure et al. p. 304 |
| 2004 | Camptosaurus depressus Norman p. 415 |
| 2006 | Camptosaurus depressus Mateus p. 231 |
| 2006 | Camptosaurus depressus Pereda Suberbiola et al. p. 228 |
| 2008 | Planicoxa depressa Carpenter and Wilson pp. 257-258 |
| 2009 | Planicoxa depressus Galton p. 241 |
| 2010 | Planicoxa depressus Carpenter and Ishida p. 152 |
| 2011 | Camptosaurus depressus Diedrich p. 145 |
| 2011 | Osmakasaurus depressus McDonald pp. 61 - 64 fig. 8 |
| 2013 | Osmakasaurus depressus Zheng et al. |
| 2015 | Osmakasaurus depressus Verdú et al. p. 256 |
| 2016 | Osmakasaurus depressus Fuentes Vidarte et al. p. 442 |
| 2016 | Planicoxa depressus Kirkland et al. p. 38 |
| 2019 | Osmakasaurus depressus Herne et al. p. 579 |
| 2021 | Osmakasaurus depressus Verdú et al. p. 4 |
| 2022 | Planicoxa depressa Ji and Zhang p. 6 |
| 2022 | Osmakasaurus depressus Rotatori et al. p. 150 |
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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.
†Osmakasaurus depressus Gilmore 1909
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. T. McDonald 2011 | Basal styracosternan distinguished from all other iguanodontians by the following unique combination of characters: cranial end of preacetabular process of ilium modified into horizontal boot, straight dor- sal margin of ilium, dorsal margin of ilium thickens mediolaterally towards the M. iliocaudalis platform (Figs. 8A, B, E). |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Benton 1983, Marsh 1875 | |||||
Age range: base of the Kimmeridgian to the top of the Barremian or 157.30000 to 125.00000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kimmeridgian - Tithonian | USA (Wyoming) | Camptosaurus depressus (39253) | |
| Barremian | USA (South Dakota) | Camptosaurus depressus (47344 type locality: 47345) |