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Brontosaurus yahnahpin
Taxonomy
Apatosaurus yahnahpin was named by Filla and Redman (1994). Its type specimen is TATE 001, a partial skeleton, and it is a 3D body fossil. Its type locality is Bertha Quarry, Como Bluff, which is in a Kimmeridgian/Tithonian levee sandstone in the Morrison Formation of Wyoming.
It was recombined as Eobrontosaurus yahnahpin by Bakker (1998), Mateus (2006), Tschopp and Mateus (2013), Tschopp and Mateus (2013); it was recombined as Brontosaurus yahnahpin by Tschopp et al. (2015), Tschopp et al. (2019).
It was recombined as Eobrontosaurus yahnahpin by Bakker (1998), Mateus (2006), Tschopp and Mateus (2013), Tschopp and Mateus (2013); it was recombined as Brontosaurus yahnahpin by Tschopp et al. (2015), Tschopp et al. (2019).
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Apatosaurus yahnahpin Filla and Redman p. 160–161 |
| 1996 | Apatosaurus yahnahpin Bakker p. 44 |
| 1998 | Eobrontosaurus yahnahpin Bakker pp. 74-75 |
| 2005 | Apatosaurus yahnahpin Wilhite p. 297 |
| 2006 | Eobrontosaurus yahnahpin Mateus p. 231 |
| 2007 | Apatosaurus yahnahpin Schwarz et al. p. 242 |
| 2013 | Eobrontosaurus yahnahpin Tschopp and Mateus p. 323 |
| 2015 | Brontosaurus yahnahpin Tschopp et al. |
| 2016 | Apatosaurus yahnahpin Foster and Peterson p. 436 |
| 2019 | Brontosaurus yahnahpin Tschopp et al. p. 28 |
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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.
†Brontosaurus yahnahpin Filla and Redman 1994
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. J. Filla and P. D. Redman 1994 | Closest to A. excelsus but differs in the retention of the following primitive characters: a greatly ex panded upper scapula blade, a scapula spine (deltoid ridge) that is perpendicular to the long axis of the scapula blade, a coracoid that is shallow and not enlarged ventrally, and a humerus with a very narrow shaft. An additional primitive character may be the retention of very long cervical ribs. |
Measurements
No measurements are available
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| Source: infrao = infraorder | |||||
| Reference: Marsh 1875 | |||||
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 (Wyoming) | Apatosaurus yahnahpin (type locality: 55487 230771) | |
| Late/Upper Kimmeridgian - Early/Lower Tithonian | USA (Colorado) | Diplodocus sp. (28366) |