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Brachychirotherium
Taxonomy
Brachychirotherium was named by Beurlen (1950). It is considered to be a form taxon.
It was synonymized subjectively with Chirotherium by Haubold (1969).
It was assigned to Thecodontia by Kuhn (1971); to Pseudosuchia by Demathieu and Haubold (1972); to Archosauria by Rainforth (2003); to Crurotarsi by Gand and Demathieu (2005), Lucas et al. (2006); to Aetosauria by Weems (2006), Hunt and Lucas (2007); and to Chirotheriidae by Kuhn (1963), Haubold (1971), Demathieu and Gand (1973), Haubold (1974), Gand (1974), Olsen and Galton (1984), Demathieu (1989), Ptaszynski (2000), Klein and Lucas (2021).
It was synonymized subjectively with Chirotherium by Haubold (1969).
It was assigned to Thecodontia by Kuhn (1971); to Pseudosuchia by Demathieu and Haubold (1972); to Archosauria by Rainforth (2003); to Crurotarsi by Gand and Demathieu (2005), Lucas et al. (2006); to Aetosauria by Weems (2006), Hunt and Lucas (2007); and to Chirotheriidae by Kuhn (1963), Haubold (1971), Demathieu and Gand (1973), Haubold (1974), Gand (1974), Olsen and Galton (1984), Demathieu (1989), Ptaszynski (2000), Klein and Lucas (2021).
Species
B. circaparvum, B. eyermani, B. gallicum, B. harrasense, B. hauboldi, B. hessei, B. kalkowensis, B. kuhni, B. lorteti, B. pachydactylum, B. paraparvum, B. parvum (syn. Agrestipus hottoni, Chirotherium copei), B. praeparvum, B. thuringiacum (syn. B. hassfurtense, B. dulcis, B. coburgense), B. wiorense
Entered
by M. Carrano on 2006-04-18; modified by M. Carrano on 2023-01-06
Synonymy list
| Year | Name and author |
|---|---|
| 1950 | Brachychirotherium Beurlen p. 316 |
| 1963 | Brachychirotherium Kuhn p. 75 |
| 1971 | Brachychirotherium Haubold p. 55 |
| 1971 | Brachychirotherium Kuhn p. 23 |
| 1972 | Brachychirotherium Demathieu and Haubold p. 805 |
| 1973 | Brachychirotherium Demathieu and Gand p. 11 |
| 1974 | Brachychirotherium Gand p. 9 |
| 1974 | Brachychirotherium Haubold p. 40 |
| 1984 | Brachychirotherium Olsen and Galton p. 95 |
| 1989 | Brachychirotherium Demathieu p. 202 |
| 2000 | Brachychirotherium Ptaszynski p. 158 |
| 2003 | Brachychirotherium Rainforth pp. 824-826 |
| 2005 | Brachychirotherium Gand and Demathieu p. 726 |
| 2006 | Brachychirotherium Lucas et al. p. 114 |
| 2006 | Brachychirotherium Weems p. 376 |
| 2007 | Brachychirotherium Hunt and Lucas p. 216 |
| 2021 | Brachychirotherium Klein and Lucas p. 14 |
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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.
G. †Brachychirotherium Beurlen 1950
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†Brachychirotherium circaparvum Demathieu 1971
†Brachychirotherium eyermani Baird 1957
†Brachychirotherium gallicum Willruth 1917
†Brachychirotherium harrasense Haubold 1967
†Brachychirotherium hauboldi Ptaszynski 1990
†Brachychirotherium hessei Soergel 1925
†Brachychirotherium kalkowensis Niedzwiedzki and Ptaszynski 2007
†Brachychirotherium kuhni Demathieu and Haubold 1982
†Brachychirotherium lorteti Haubold 1970
†Brachychirotherium pachydactylum Demathieu and Gand 1973
†Brachychirotherium paraparvum Demathieu and Oosterink 1988
†Brachychirotherium parvum Hitchcock 1889
hide
Invalid names: Agrestipus hottoni Weems 1987 [synonym], Chirotherium copei Bock 1952 [synonym]
†Brachychirotherium praeparvum Haubold 1967
†Brachychirotherium thuringiacum Rühle von Lilienstern 1938
hide
Invalid names: Brachychirotherium coburgense Aumann 1957 [synonym], Brachychirotherium dulcis Ellenberger 1970 [synonym], Brachychirotherium hassfurtense Beurlen 1950 [synonym]
†Brachychirotherium wiorense Ptaszynski 2000
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. Klein and S. G. Lucas 2021 | Chirotheriid trackways of a quadruped with plantigrade to semidigitigrade posture of the pes and manus. Pentadactyl pes imprint with rounded to oval shape and broad plantar surface. Pedal digit group I–IV nearly as wide as long and with an overall divarication of more than 40°. Digits moderately spread, relatively short and broad with robust, rounded pads and narrow claws, digits III and II longest, digit IV always preserved. Pedal digit V lacks a separated phalangeal segment or shows an indistinct trace of it, which is anteriorly oriented, but never recurved. In comparison with the pes, the manus imprint is much smaller, and manual digit group I–IV is mostly wider than long, but otherwise of a shape similar to the pes. Trackways with narrow pattern and relatively high pace angulation (160°), moderate outward rotation of the pes and stronger outward rotation of the manus. |