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Champsosaurus laramiensis
Taxonomy
Champsosaurus laramiensis was named by Brown (1905). Its type specimen is AMNH 982, a skeleton, and it is not a trace fossil. Its type locality is Hell Creek (AMNH general), which is in a Maastrichtian terrestrial horizon in the Hell Creek Formation of Montana.
Synonymy list
| Year | Name and author |
|---|---|
| 1905 | Champsosaurus laramiensis Brown |
| 1930 | Champsosaurus laramiensis Hay p. 133 |
| 1972 | Champsosaurus laramiensis Erickson p. 10 |
| 1998 | Champsosaurus laramiensis Gao and Fox p. 336 |
| 2023 | Champsosaurus laramiensis Dudgeon et al. |
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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.
†Champsosaurus laramiensis Brown 1905
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, c = class, subp = subphylum | |||||
| References: Bryant 1989, Hendy et al. 2009, Carroll 1988 | |||||
Age range: Late/Upper Maastrichtian or 70.60000 to 66.00000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lancian | USA (North Dakota) | Champsosaurus laramiensis (14620 14621) | |
| Late/Upper Maastrichtian | USA (Montana) | Champsosaurus laramiensis (type locality: 131865) | |
| Late/Upper Maastrichtian | USA (North Dakota) | Champsosaurus laramiensis (231465) | |
| Late/Upper Maastrichtian | Canada (Saskatchewan) | Champsosaurus laramiensis (180638) |