Cricetulodon

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Cricetulodon
Temporal occurrence
Vallesium to Turolium (Upper Miocene )
11.6 to 7 million years
Locations
Systematics
Rodents (Rodentia)
Mouse relatives (Myomorpha)
Mice-like (Muroidea)
Burrowers (Cricetidae)
Hamster (Cricetinae)
Cricetulodon
Scientific name
Cricetulodon
Hartenberger , 1966

Cricetulodon is an extinct genus of mice . It is known from the Upper Miocene of France and Spain and has probably evolved into rotundomys .

Body features

Cricetulodon has three initially high-crowned molars in each half of the jaw . The anterolophid of the first lower molar is predominantly on the lip side. The mesoloph and mesolophid of all teeth as well as the anterosinusid of the second mandibular molar and the posterior tongue- sided corner of the third mandibular molar tend to be smaller.

The first maxillary molar is almond-shaped, with an almost straight lip-side and a strongly curved tongue-side edge. The point furthest on the tongue is behind the protocon . The anterolophul spur on the lip side is usually absent, rarely short. The third upper molar is round, as long as it is wide, or shorter than it is wide.

Distribution and Tribal History

Cricetulodon is known from the Vallesian and Turolian of France and Spain 11.6 to 7.0 million years ago. It could be a locally developed lineage of small to medium-sized hamsters that descended from the Democricetodon of the early Vallesium and evolved into rotundomys .

Systematics

Cricetulodon

McKenna and Bell (1997) assign Cricetulodon as a synonym of the genus Rotundomys , Freudenthal et al . (1998 ) assign the Cricetinae as an independent genus . There are five types :

Cricetulodon bugesiensis and Cricetulodon sabadellensis are about the same size, Cricetulodon hartbergeri is smaller. Jean-Louis Hartenberger introduced the genus Cricetulodon in 1966. The type species is Cricetulodon sabadellensis .

Cricetulodon meini

The type specimen of Cricetulodon meini with the inventory number IPMC FCA-237 is the first molar of a right half of the lower jaw. Named after Pierre Mein , Jordi Agustí describes this in 1986 as Kowalskia meini . Freudenthal et al . (1998) assign the species to the genus Cricetulodon .

Cricetulodon sabadellensis

The type specimen of Cricetulodon sabadellensis with inventory number IPMC CL 1392 is an upper jaw with first and second molars on the right half of the jaw. Named after the city of Sabadell in the province of Barcelona, ​​Matthijs Freudenthal, Pierre Mein and Elvira Martín-Suárez describe this in 1998.

Individual evidence

  1. ^ Fejfar et al. (Year unknown).
  2. ↑ a b c Freudenthal et al . (1998). Quoted in: Cricetulodon . ("Morphology: Diagnosis") In: The Paleobiology Database .
  3. ↑ Cricetulodon . ("Age range and collections") In: The Paleobiology Database .
  4. ↑ Freudenthal et al. (1998, abstract).
  5. ↑ McKenna and Bell 1997, p. 149.
  6. ↑ a b Cricetulodon . ("Taxonomic history") In: The Paleobiology Database
  7. ↑ Cricetulodon . ("Classification") In: The Paleobiology Database .
  8. ↑ Freudenthal et al . 1998. Quoted in: Cricetulodon bugesiensis . ("Morphology: Diagnosis") In: The Paleobiology Database .
  9. ↑ Hartenberger 1966, p. 493. Quoted in: McKenna and Bell 1997, p. 149.
  10. ↑ Cricetulodon meini . ("Taxonomic history") In: The Paleobiology Database .
  11. ↑ Cricetulodon sabadellensis . ("Taxonomic history") In: The Paleobiology Database .

literature

  • Cricetulodon . In: The Paleobiology Database . ( Record [accessed September 23, 2007]).
  • Cricetulodon bugesiensis . In: The Paleobiology Database . ( Record [accessed September 23, 2007]).
  • Cricetulodon meini . In: The Paleobiology Database . ( Record [accessed September 23, 2007]).
  • Cricetulodon sabadellensis . In: The Paleobiology Database . ( Record [accessed September 23, 2007]).
  • Jordi Agustí: Nouvelles espèces de cricetidés vicariantes dans le Turolien moyen de Fortuna (prov. Murcia, Espagne) . In: Geobios. Lyon 19, 1986, ISSN  0016-6995 , pp. 5-11 .
  • Oldřich Fejfar, Wolf-Dieter Heinrich, Laszlo Kordos, Lutz Christian Maul: Microtoid cricetids and the early history of the arvicolids (Mammalia: Rodentia) .
  • Matthijs Freudenthal, Pierre Mein, Elvira Martín-Suárez: Revision of Late Miocene and Pliocene Cricetinae (Rodentia, Mammalia) from Spain and France . In: Treballs del Museu de Geologia de Barcelona . Barcelona 7, 1998, ISSN  1130-4995 , pp. 11-93 ( abstract ).
  • Jean-Louis Hartenberger: Les rongeurs du Vallésien (Miocène supérieur) de Can Llobateres (Sabadell, Espagne), Gliridae et Eomyidae . In: Bulletin de la Société Géologique de France . Série 7. Paris 8, 1966, ISSN  0037-9409 , p. 596-604 .
  • Malcolm C. McKenna, Susan K. Bell: Classification of Mammals Above the Species Level . Columbia University Press, New York 1997, ISBN 0-231-11012-X .