Brachychirotherium

Brachychirotherium is an ichnogenus, a form taxon based on footprints. It was first characterized from examples found in Triassic beds in Germany,[1] but has since been found in Triassic beds of France,[2] South Africa,[3] South America in Argentina, Peru,[4] and Bolivia,[5][6] and North America.[7]

Brachychirotherium
Brachychirothermium at the New Mexico Museum of Natural History and Science
Trace fossil classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Pseudosuchia
Ichnofamily: †Chirotheriidae
Ichnogenus: †Brachychirotherium
Beurlen, 1950
Ichnospecies

See text

Front (manus) and read (pes) footprints are distinguishable. The pes prints show five toes, with the fifth toe reduced to an oval pad. The manus prints likewise show five digits of similar length. Both kinds of prints show a fairly primitive anatomy, and the prints may have been produced by a rausuchid or other large thecodont (crocodile-like ancestors of reptiles).[8]

Species
  • B. circaparvum Willruth, 1971[9]
  • B. gallicum Willruth, 1971[10]
  • B. lorteci Willruth, 1971[9]
  • B. thuringiacum Ruhle von Lilienstern, 1938[11]
  • B. tintati Willruth, 1971[9]

See also

References
  1. Beurlen, K. (1950). "Neue Fährtenfunde aus der Fränkischen Trias [New track discoveries in the Franconian Triassic]". Neues Jahrbuch für Geologie und Paläontologie - Monatshefte. 1950: 308–320.
  2. Gand, G.; Demathieu, G.; Montenat, C. (2007). "Les traces de pas d'amphibiens, de dinosaures et autres reptiles du Mesozoïque français: Inventaire et interpretations [Footprints of amphibians, dinosaurs, and other reptiles from the French Mesozoic: inventory and interpretations]" (PDF). Palaeovertebrata. 2007 (1–4): 1–149. Retrieved 24 November 2021.
  3. Olsen, P.E.; Galton, P.M. (1984). "A review of the reptile and amphibian assemblages from the Stormberg of southern Africa, with special emphasis on the footprints and the age of the Stormberg". Palaeontologia Africana. 25: 87–110. Retrieved 24 November 2021.
  4. Salas Gismondi, Rodolfo; Chacaltana Budiel, César Augusto (2010). "Huellas de un arcosaurio triásico en la Formación Sarayaquillo (Cuenca Ene, Perú) y el icnoregistro de vertebrados en el mesozoico del Perú". Repositorio Institucional INGEMMET.
  5. Apesteguía, Sebastián; Riguetti, Facundo; Citton, Paolo; Veiga, Gonzalo D.; Poiré, Daniel G.; de Valais, Silvina; Gabriel Zacarías, Gerardo (2021-11-02). "The Ruditayoj-Tunasniyoj fossil area (Chuquisaca, Bolivia): a Triassic chirotheriid megatracksite and reinterpretation of purported thyreophoran tracks". Historical Biology. 33 (11): 2883–2896. doi:10.1080/08912963.2020.1833328. ISSN 0891-2963.
  6. Leonardi, G. (1994). Annotated Atlas of South America in Argentina,Peru and Bolivia. Tetrapod Footprints (Devonian to Holocene) with an Appendix on Mexico and Central America. Brasília: República Federativa do Brasil, Ministério de Minas e Energia, Secretaria de Minas e Metalurgia, Companhia de Pesquisa de Recursos Minerais. pp. 1–248.
  7. Conrad, Kelly; Lockley, Martin G.; Prince, Nancy K. (1987). "Triassic and Jurassic vertebrate-dominated trace fossil assemblages of the Cimarron Valley region--Implications for paleoecology and biostratigraphy" (PDF). New Mexico Geological Society Field Conference Series. 38: 127–138. Retrieved 1 September 2020.
  8. Olsen & Galton 1984, p. 95.
  9. Gand, Demathieu & Montenat 2007, p. 58.
  10. Gand, Demathieu & Montenat 2007, pp. 57–58.
  11. Olsen & Galton 1984, p. 96.


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