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Diadectidae
Taxonomy
Diadectidae was named by Cope (1880).
It was reranked as the unranked clade Diadectidae by Liu and Bever (2015).
It was assigned to Theriodontia by Zittel (1890); to Cotylosauria by Cope (1896), Hay (1902), Osborn (1904); to Theriodontia by Perrier (1928); to Diadectiformes by Hay (1930); to Diadectomorpha by Kuhn (1946); to Diadectomorpha by Lewis and Vaughn (1965); to Diadectoidea by Kuhn (1966); to Diadectosauria by Case (1911), Carroll et al. (1972); to Amphibia by Carroll (1988); and to Diadectomorpha by Laurin and Reisz (1995), Kissel and Lehman (2002), Martens et al. (2005), Liu and Bever (2015).
It was reranked as the unranked clade Diadectidae by Liu and Bever (2015).
It was assigned to Theriodontia by Zittel (1890); to Cotylosauria by Cope (1896), Hay (1902), Osborn (1904); to Theriodontia by Perrier (1928); to Diadectiformes by Hay (1930); to Diadectomorpha by Kuhn (1946); to Diadectomorpha by Lewis and Vaughn (1965); to Diadectoidea by Kuhn (1966); to Diadectosauria by Case (1911), Carroll et al. (1972); to Amphibia by Carroll (1988); and to Diadectomorpha by Laurin and Reisz (1995), Kissel and Lehman (2002), Martens et al. (2005), Liu and Bever (2015).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1878 | Nothodontidae Marsh |
| 1880 | Diadectidae Cope p. 304 |
| 1890 | Diadectidae Zittel p. 581 |
| 1896 | Diadectidae Cope p. 441 |
| 1902 | Diadectidae Hay p. 426 |
| 1904 | Diadectidae Osborn p. 101 |
| 1911 | Diadectidae Case pp. 9, 11 |
| 1928 | Diadectidae Perrier p. 3085 |
| 1930 | Diadectidae Hay p. 33 |
| 1946 | Diadectidae Kuhn p. 55 |
| 1965 | Diadectidae Lewis and Vaughn p. C13 |
| 1966 | Diadectidae Kuhn p. 16 |
| 1972 | Diadectidae Carroll et al. p. 21 |
| 1988 | Diadectidae Carroll |
| 1995 | Diadectidae Laurin and Reisz p. 173 |
| 2002 | Diadectidae Kissel and Lehman p. 533 |
| 2005 | Diadectidae Martens et al. |
| 2015 | Diadectidae Liu and Bever p. 1 |
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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.
Fm. †Diadectidae Cope 1880
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G. †Animasaurus Case and Williston 1912
G. †Diadectes Cope 1878
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†Diadectes absitus Berman et al. 1998
†Diadectes alatus Cope 1878
†Diadectes carinatus Case and Williston 1912
†Diadectes cretin Case 1911
†Diadectes fissus Cope 1883
†Diadectes lentus Marsh 1878
†Diadectes molaris Cope 1878
†Diadectes sideropelicus Cope 1878
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Invalid names: Diadectes biculminatus Cope 1896 [synonym], Diadectes latibuccatus Cope 1878 [synonym], Diadectes phaseolinus Cope 1880 [synonym], Diadectes rapidens Cope 1878 [synonym], Empedias alatus Cope 1878 [synonym], Empedias fissus Cope 1883 [synonym], Empedocles molaris Cope 1878 [synonym], Helodectes isaaci Cope 1880 [synonym], Helodectes paridens Cope 1880 [synonym]
†Diadectes tenuitectes Cope 1896
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Invalid names: Diadectes huenei Broom 1914 [synonym], Diadectes maximus Case 1910 [synonym], Diadectoides cretin Case 1911 [synonym]
†Diadectes tenuitectus Cope 1896
†Diadectes zenos Case 1910
Invalid names: Empedocles Cope 1878 [synonym], Nothodon Marsh 1878 [synonym], Silvadectes Kissel 2010 [nomen nudum]
G. †Diadectoides Case 1911
G. †Diasparactus Case 1910
G. †Empedias Cope 1883
G. †Ichniotherium Pohlig 1892
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†Ichniotherium cottae Pohlig 1885
†Ichniotherium gilmorei Haubold 1971
†Ichniotherium sphaerodactylum Pabst 1895
Invalid names: Nothodontidae Marsh 1878 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. Perrier 1928 | Molaires allongées perpendiculairement au bord externe du maxillaire, présentant 2 pointes rapprochées à l'angle externe, et une longue surface masticatrice allant de ces pointes au bord interne. Vomer avec une rangée de denticules. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Carroll 1988 | |||||
Age range: base of the Missourian to the top of the Wuchiapingian or 306.00000 to 254.14000 Ma
Collections (73 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Missourian | USA (Colorado) | Desmatodon hesperis (180938) | |
| Missourian | USA (Pennsylvania) | Desmatodon hollandi (180937) | |
| Virgilian | USA (Kansas) | Diasparactus sp. (215555) | |
| Virgilian | USA (Oklahoma) | Diasparactus zenos (13947) | |
| Virgilian | USA (New Mexico) | Diasparactus zenos, Desmatodon hollandi (34761) | |
| Gzhelian - Sakmarian | USA (New Mexico) | Diadectes sp. (180989) | |
| Virgilian - Wolfcampian | USA (New Mexico) | Diadectes sp. (77412) | |
| Asselian | Germany (Thuringia) | Ichniotherium cottae (180765) | |
| Asselian | Germany (Saxony) | Phanerosaurus naumanni (180950) | |
| Asselian | USA (Nebraska) | Diadectidae indet. (179620) | |
| Asselian | USA (Texas) | Diadectes sp. (173721 207496) | |
| Asselian - Sakmarian | USA (Texas) | Diadectes sp. (11165) | |
| Wolfcampian | USA (Colorado) | Animasaurus carinatus (180939) Diadectes sanmiguelensis (85481) | |
| Wolfcampian | USA (New Mexico) | Diadectes lentus (80833 180106 180383 180384 180940) Diadectes sp. (85436 180382 180974 181075) Diadectidae indet. (28067) Diasparactus zenos (80130) | |
| Wolfcampian | USA (Texas) | Diadectes sideropelicus (180957 180978) | |
| Wolfcampian | USA (Oklahoma) | Diadectes sp. (28394) | |
| Wolfcampian - Leonardian | USA (Utah) | Diadectes sp. (80110) | |
| Permian | USA (Oklahoma) | Diadectes sp. (221391) | |
| Sakmarian | USA (Texas) | Diadectes latibuccatus (28124) Diadectes sp. (28125) | |
| Sakmarian | USA (Ohio) | Ambedus pusilus (80877) | |
| Sakmarian | Canada (Prince Edward Island) | Diadectes sp. (237230) Diadectidae indet. (237229) | |
| Sakmarian - Artinskian | USA (Texas) | Diadectes phaseolinus, Empedias molaris (28324) | |
| Sakmarian - Artinskian | USA (New Mexico) | Diadectes sp. (180988) | |
| Artinskian | USA (Texas) | Diadectes latibuccatus, Diadectes phaseolinus, Empedias molaris (108766) Diadectes sideropelicus (84716) Diadectes sideropelicus, Diadectes biculminatus, Empedias alatus (28142) Diadectes sp. (13080 28143 28145 28146 28147 28148 28149 28238 28240) Diadectes sp., Empedias fissus (28150) | |
| Artinskian | Germany (Thuringia) | Diadectes absitus, Orobates pabsti, Ichniotherium cottae (80112) | |
| Artinskian - Kungurian | USA (Oklahoma) | Diadectes sp. (85733) | |
| Artinskian - Kungurian | USA (Texas) | Diadectes sp. (28241 85301) Diadectes sp., Chilonyx rapidens (28252) Diadectes sp., Helodectes isaaci, Helodectes paridens (28253) | |
| Artinskian - Roadian | USA (Texas) | Diadectes sp. (180992) | |
| Leonardian | USA (Oklahoma) | Diadectes sp. (180990 180991) | |
| Leonardian | USA (Texas) | Diadectes sp. (68171) | |
| Kungurian | USA (Texas) | Bolbodon tenuitectes, Diadectes huenei (28256) Chilonyx rapidens (28251) Diadectes sp. (28264 28267 28272 28273 67735 178738) Diadectes sp., Diadectoides cretin (28275) | |
| Rotliegendes | Poland (Lower Silesia) | Ichniotherium cottae (197201) | |
| Wuchiapingian | China (Henan) | Alveusdectes fenestratus (171025) | |
| Lopingian | Italy (Trentino-Alto Adige) | Ichniotherium cottae (188750) |