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Psammodontiformes
Taxonomy
Psammodontiformes was named by Obruchev (1953). It is not extant.
It was assigned to Chondrichthyes by Sepkoski (2002); to Holocephalimorpha by Nelson (2006); and to Holocephalomorpha by Long (2011), Nelson et al. (2016).
It was assigned to Chondrichthyes by Sepkoski (2002); to Holocephalimorpha by Nelson (2006); and to Holocephalomorpha by Long (2011), Nelson et al. (2016).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1953 | Psammodontiformes Obruchev |
| 2002 | Psammodontiformes Sepkoski |
| 2006 | Psammodontiformes Nelson p. 44 |
| 2011 | Psammodontiformes Long p. 242 |
| 2016 | Psammodontiformes Nelson et al. p. 50 |
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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.
Or. †Psammodontiformes Obruchev 1953
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Fm. †Psammodontidae
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G. †Apodometes Gistel 1848
G. †Astrabodus Davis 1884
G. †Dimyleus Davis 1883
G. †Homalodus Davis 1883
G. †Mylacodus Davis 1883
G. †Mylax Morris and Roberts 1883
G. †Pinacodus Davis 1883
G. †Pleurogomphus Agassiz 1862
G. †Psammodus Agassiz 1834
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†Psammodus angularis Newberry and Worthen 1866
†Psammodus caelatus Saint John and Worthen 1883
†Psammodus canaliculatus M'Coy 1848
†Psammodus cornutus Agassiz 1843
†Psammodus crassidens Saint John and Worthen 1883
†Psammodus expansus Davis 1884
†Psammodus glyptus Saint John and Worthen 1883
†Psammodus grandis Saint John and Worthen 1883
†Psammodus longidens Agassiz 1837
†Psammodus lovianus Saint John and Worthen 1883
†Psammodus plenus Saint John and Worthen 1883
†Psammodus porosus Agassiz 1837
†Psammodus reticulatus Newberry and Worthen 1866
†Psammodus rugosus Agassiz 1836
†Psammodus salopiensis Woodward 1889
†Psammodus springeri Saint John and Worthen 1883
†Psammodus trapeziformis Davis 1883
†Psammodus tumidus Saint John and Worthen 1883
†Psammodus turgidus Saint John and Worthen 1883
†Psammodus turgidus Agassiz 1838
G. †Rhymodus Davis 1883
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, subp = subphylum | |||||
| References: Carroll 1988, Hendy et al. 2009, Wagner 2023 | |||||
Age range: base of the Kinderhookian to the top of the Middle Bathonian or 358.90000 to 164.70000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kinderhookian | USA (Montana) | Psammodus sp. (545) | |
| Mississippian | United Kingdom | Helodus turgidus, Psammodus rugosus, Psammodus canaliculatus, Psammodus cornutus (132781) Psammodus rugosus (132789) Psammodus trapeziformis (137333) | |
| Mississippian | USA (Alabama) | Psammodus sp. (84103) | |
| Visean | Egypt | Psammodus sp. (46983) | |
| Visean | United Kingdom | Psammodus cornutus (132783) | |
| Asbian | United Kingdom (Northern Ireland) | Psammodus sp. (6949) | |
| Brigantian | Thailand | Psammodontidae indet. (130649) | |
| Late/Upper Mississippian | USA (Alabama) | Psammodus sp. (84104) | |
| Pennsylvanian | United Kingdom | Psammodus expansus (137324) | |
| Moscovian | Russian Federation | Psammodus spicularis (132707) | |
| Wuchiapingian | Pakistan | Psammodus sp. (90255) | |
| Middle Bathonian | United Kingdom (England) | Psammodus rugosus (59357) |