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Dolichorhynchia
Taxonomy
Dolichorhynchia was named by Clark et al. (2024).
It was assigned to Polycotylinae by Clark et al. (2024).
It was assigned to Polycotylinae by Clark et al. (2024).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2024 | Dolichorhynchia Clark et al. p. 4 |
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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.
Unr. †Dolichorhynchia Clark et al. 2024
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G. †Dolichorhynchops Williston 1902
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†Dolichorhynchops herschelensis Sato 2005
†Dolichorhynchops osborni Williston 1902
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Invalid names: Polycotylus osborni Watson 1951 [synonym]
Invalid names: Plesiosaurus ichthyospondylus Seeley 1869 [nomen vanum], Trinacromerum latimanus Williston 1908 [nomen vanum]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. O. Clark et al. 2024 | Polycotyline plesiosaurs possessing the following synapomorphies: temporal fenestra anteroposteriorly very short (temporal fenestra length to cranial length ratio 0.15 or less), parasphenoid has cultriform process projecting into the anterior interpterygoid vacuity, caudal vertebrae chevron facets located on posterior edge of each centrum, coracoid has an anteroposteriorly straight anterior process. Also shares the following synapomorphies with Trinacromerum bentonianum: scapula has dorsal blade with distinct posterodorsal inflection, pelvic fenestra has much greater mediolateral width than anteroposterior length. |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Late/Upper Coniacian to the top of the Judithian or 89.80000 to 72.20000 Ma
Collections (18 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Turonian - Coniacian | Poland (Warmińsko-Mazurskie) | Plesiosaurus ichthyospondylus (227270 227271) | |
| Turonian - Coniacian | Russian Federation (Kaliningrad) | Plesiosaurus ichthyospondylus (227272) | |
| Turonian - Santonian | USA (Kansas) | Polycotylidae indet. (31690) | |
| Late/Upper Coniacian - Santonian | USA (Kansas) | Dolichorhynchops osborni (117856) | |
| Santonian | USA (Kansas) | Dolichorhynchops osborni (117851) | |
| Santonian | Canada (Manitoba) | Dolichorhynchops sp. ROM 29010 (107803) | |
| Campanian | USA (Texas) | Trinacromerum bonneri (118185) | |
| Early/Lower Campanian | Canada (Northwest Territories) | Dolichorhynchops osborni (106333) | |
| Early/Lower Campanian - Middle Campanian | USA (Wyoming) | Trinacromerum bonneri (77312) | |
| Early/Lower Campanian - Middle Campanian | USA (South Dakota) | Dolichorhynchops osborni (117861) Dolichorhynchops osborni, Trinacromerum bonneri (77316) | |
| Judithian | USA (Wyoming) | Dolichorhynchops sp. (14465 14480) | |
| Middle Campanian | USA (Wyoming) | Dolichorhynchops osborni (117860) Unktaheela specta (233170) | |
| Middle Campanian | USA (South Dakota) | Unktaheela specta (94640) | |
| Late/Upper Campanian - Early/Lower Maastrichtian | Canada (Saskatchewan) | Dolichorhynchops herschelensis (100237) |