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Apatosaurus ajax
Taxonomy
Apatosaurus ajax was named by Marsh (1877). Its type specimen is YPM 1860, a partial skeleton, and it is a 3D body fossil. Its type locality is Lakes Quarry 10, Morrison (YPM), which is in a Kimmeridgian/Tithonian channel mudstone/sandstone in the Morrison Formation of Colorado.
It was recombined as Atlantosaurus ajax by Steel (1970); it was considered a nomen dubium by Galiano and Albersdörfer (2010), Galiano and Albersdörfer (2010).
It was recombined as Atlantosaurus ajax by Steel (1970); it was considered a nomen dubium by Galiano and Albersdörfer (2010), Galiano and Albersdörfer (2010).
Synonymy list
| Year | Name and author |
|---|---|
| 1877 | Apatosaurus ajax Marsh |
| 1878 | Apatosaurus ajax King p. 346 |
| 1880 | Apatosaurus ajax Sauvage p. 523 |
| 1890 | Apatosaurus ajax Zittel p. 706 |
| 1896 | Apatosaurus ajax Marsh p. 167 |
| 1897 | Apatosaurus ajax Marsh p. 491 |
| 1901 | Apatosaurus ajax Nopcsa p. 203 |
| 1902 | Apatosaurus ajax Hay p. 485 |
| 1916 | Apatosaurus ajax Mook p. 135 |
| 1917 | Apatosaurus ajax Mook p. 357 |
| 1930 | Apatosaurus ajax Hay p. 195 |
| 1931 | Apatosaurus ajax Johnson p. 358 |
| 1964 | Apatosaurus ajax Tatarinov p. 547 |
| 1970 | Atlantosaurus ajax Steel p. 79 |
| 1970 | Apatosaurus ajax Swinton p. 176 |
| 1975 | Apatosaurus ajax Mcintosh and Berman p. 197 |
| 1981 | Apatosaurus ajax McIntosh p. 23 |
| 1990 | Apatosaurus ajax McIntosh p. 61 |
| 1994 | Apatosaurus ajax Filla and Redman p. 161 |
| 1995 | Apatosaurus ajax McIntosh p. 122 |
| 2004 | Apatosaurus ajax Upchurch et al. p. 264 |
| 2004 | Apatosaurus ajax Upchurch et al. |
| 2006 | Apatosaurus ajax Chure et al. p. 236 |
| 2006 | Apatosaurus ajax Harris p. 1110 |
| 2006 | Apatosaurus ajax Mateus p. 231 |
| 2007 | Apatosaurus ajax Schwarz et al. p. 245 |
| 2013 | Apatosaurus ajax Tschopp and Mateus p. 880 |
| 2014 | Apatosaurus ajax Saegusa and Ikeda p. 12 |
| 2015 | Apatosaurus ajax Tschopp et al. |
| 2016 | Apatosaurus ajax Foster and Peterson p. 436 |
| 2021 | Apatosaurus ajax Ren et al. p. 1876 |
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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.
†Apatosaurus ajax Marsh 1877
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, infrao = infraorder | |||||
| References: Marsh 1875, Peczkis 1995 | |||||
Age range: base of the Late/Upper Kimmeridgian to the top of the Early/Lower Tithonian or 152.21000 to 145.06000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kimmeridgian - Tithonian | USA (Colorado) | Apatosaurus ajax (type locality: 13341 39376) | |
| Late/Upper Kimmeridgian - Early/Lower Tithonian | USA (Colorado) | Apatosaurus ajax (28382) |