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Ptyctodontida
Taxonomy
Ptyctodontida was named by Gross (1932).
It was synonymized subjectively with Ptyctodontiformes by Long (2011).
It was assigned to Placodermi by Denison (1975); and to Placodermi by Denison (1978), Dineley and Metcalf (1999), Sepkoski (2002) and Young (2010).
It was synonymized subjectively with Ptyctodontiformes by Long (2011).
It was assigned to Placodermi by Denison (1975); and to Placodermi by Denison (1978), Dineley and Metcalf (1999), Sepkoski (2002) and Young (2010).
Subtaxa
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1932 | Ptyctodontida Gross |
| 1975 | Ptyctodontida Denison p. 23 |
| 1978 | Ptyctodontida Denison |
| 1999 | Ptyctodontida Dineley and Metcalf p. 11 |
| 2002 | Ptyctodontida Sepkoski |
| 2010 | Ptyctodontida Young p. 527 |
| 2011 | Ptyctodontiformes Long p. 242 |
| 2016 | Ptyctodontiformes Nelson et al. p. 39 |
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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. †Ptyctodontida Gross 1932
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G. †Denisonodus Johnson and Elliott 1996
Fm. †Ptyctodontidae Woodward 1891
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G. †Acmoniodus Hussakof and Bryant 1920
G. †Chelyophorus Agassiz 1845
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†Chelyophorus griffithii M'Coy 1848
†Chelyophorus pskovensis Obruchev 1947
†Chelyophorus verneuili Agassiz 1844
G. †Ctenurella Ørvig 1960
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†Ctenurella gardineri Miles and Young 1977
†Ctenurella gladbachensis Ørvig 1960
G. †Eczematolepis Miller 1892
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†Eczematolepis fragilis Newberry 1857
†Eczematolepis pustulosus Newberry 1875
†Eczematolepis telleri Eastman 1898
Invalid names: Acantholepis Newberry 1875 [replaced]
G. †Palaeomylus Woodward 1891
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†Palaeomylus crassus Newberry 1873
†Palaeomylus frangens Newberry 1878
†Palaeomylus greenei Newberry 1889
†Palaeomylus hussakofi Bryant 1935
†Palaeomylus lunaeformis Hussakof and Bryant 1919
†Palaeomylus minor Bryant 1935
†Palaeomylus predator Eastman 1898
G. †Ptyctodus Pander 1858
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†Ptyctodus bradyi Hussakof 1942
†Ptyctodus calceolus Newberry and Worthen 1866
†Ptyctodus compressus Eastman 1898
†Ptyctodus czarnockii Gorizdro-Kulczykka 1934
†Ptyctodus eastmani Weller 1906
†Ptyctodus ferox Eastman 1898
†Ptyctodus howlandi Hussakof and Bryant 1919
†Ptyctodus kielcensis Gorizdro-Kulczykka 1934
†Ptyctodus major Rohon 1895
†Ptyctodus molaris Eastman 1898
†Ptyctodus obliquus Pander 1858
†Ptyctodus panderi Eastman 1898
†Ptyctodus punctatus Eastman 1898
†Ptyctodus reimanni Carter 1942
†Ptyctodus sibericus Tolmachoff 1915
G. †Ramphodus Jaekel 1903
G. †Rhynchodus Newberry 1873
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†Rhynchodus excavatus Newberry 1877
†Rhynchodus eximius Jaekel 1919
†Rhynchodus major Eastman 1898
†Rhynchodus marginalis Gorizdro-Kulczykka 1934
†Rhynchodus occidentalis Newberry 1878
†Rhynchodus ornatus Hussakof and Bryant 1919
†Rhynchodus pertenuis Eastman 1904
†Rhynchodus rostratus Eastman 1898
†Rhynchodus secans Newberry 1873
†Rhynchodus telleri Hussakof and Bryant 1919
†Rhynchodus tetrodon Jaekel 1903
†Rhynchodus wildungensis Jaekel 1929
G. Rinodus Newberry and Worthen 1866
G. †Rhamphodopsis Watson 1938
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†Rhamphodopsis threiplandi Watson 1934
†Rhamphodopsis trispinatus Watson 1938
G. †Tollodus Mark-Kurik 1977
Invalid names: Ptyctodontiformes [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, subp = subphylum | |||||
| Reference: Carroll 1988 | |||||
Age range
Maximum range based only on fossils: base of the Emsian to the top of the Pennsylvanian or 407.60000 to 298.90000 Ma
Minimum age of oldest fossil (stem group age): 393.3 Ma
Minimum age of oldest fossil (stem group age): 393.3 Ma
Collections (18 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Emsian | USA (Wyoming) | Bulbocanthus rugosus (26176) | |
| Eifelian | Belarus (Vitebsk) | Ptyctodontida indet. (232958) | |
| Eifelian | Estonia | Ptyctodontida indet. (225793) | |
| Eifelian | Belarus | P. gen. n. ? (225882) | |
| Early/Lower Givetian | Belarus | Rhynchodus sp. (225886) | |
| Givetian | USA (Iowa) | Ptyctodus sp., Rhynchodus sp., Ptyctodopsis menzeli (163063) | |
| Early/Lower Frasnian | Iran | Ptyctodontidae indet. (226048) | |
| Early/Lower Frasnian | Russian Federation | Ptyctodontida indet., Ptyctodus sp. (90343) | |
| Middle Frasnian | Poland (Swietokrzyskie Voivodship) | Rhynchodus sp. 1, Rhynchodus sp. 2 (226394) | |
| Late/Upper Givetian | Belarus | Ptyctodontida indet., Ctenurella sp. (225888) | |
| Late/Upper Givetian - Early/Lower Frasnian | Germany (North Rhine-Westphalia) | Ctenurella gladbachensis (226078) Ptyctodus sp., Ctenurella gladbachensis (197071) | |
| Famennian | South Africa (Eastern Cape) | Ptyctodontida indet. (68049) | |
| Middle Famennian | Russian Federation (Oryol Oblast) | Ptyctodus major (226045) | |
| Late/Upper Famennian | USA (Missouri) | Ptyctodus calceolus (6027 6041 6051) | |
| Pennsylvanian | United Kingdom | Chelyophorus griffithii (132779) |