Diplocynodon sp.

Taxonomy

Alligatoroid

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia Laurenti 1768
Order: Crocodylia
Family: Alligatoridae
Genus: Diplocynodon
Species: Diplocynodon sp.

Geological Time Scale

Eon: Phanerozoic
Era: Cenozoic
Period: Neogene
Sub Period: None
Epoch: Miocene
International Age: Langhian, late

Stratigraphy

unknown formation

Biostratigraphy

Mammal Neogene zones MN4–MN6 (biochronological zone)

Provenance

Acquired by: Purchase/Trade

Dimensions

Length: 15 cm

Location

Gračanica coal pit
Bugojno City
Central Bosnia Canton
Bosnia and Herzegovina

• diplocynodon
• gračanica
• miocene
• ratelii
• tff-oilshale-ch1752
• ungeri

Comments

 

Prepared with transfer method; the preserved skull length is about 15 cm.

Taxonomy according to GBIF.

Two Diplocynodon species are known from the Miocene so far: Diplocynodon ratelii Pomel, 1847 (type species) from the early Miocene of France and Diplocynodon ungeri (Prangner, 1845), from the middle Miocene of Austria and France. According to a communication from M. Gross, this is probably Diplocynodon ungeri.

Diagnosis for Diplocynodon (Martin & Gross, 2011): “enlarged fourth and fifth maxillary alveoli of roughly identical diameter; confluent third and fourth dentary alveoli containing caniniform teeth; ontogenetic development of a pit into a notch between the premaxilla and maxilla; ectopterygoid adjacent to at least the last two maxillary alveoli; quadrate separates parietal from squamosal ventral to the orbitotemporal foramen; dorsal margin of lower temporal fenestra formed by quadratojugal, preventing quadrate from reaching the fenestra; tip of splenial excluded from the symphysis; overbite of the premaxilla and anterior portion of the maxilla.”

ID by oilshale, confirmed by Dr. M. Gross (Universalmuseum Joanneum, Graz, Austria).

Reference:

Prangner, E. (1845). Über Enneodon Ungeri, ein neues Genus fossiler Saurier aus den Tertiär-Gebilden zu Wies im Marburger Kreise Steiermark's. Steiermärkische Z. N. F., 8 (1845), pp. 114-139.

Pomel, A. (1847). Note sur des animaux fossiles découverts dans le département de l’Allier. Bull. Soc. geol. France, 4, pp. 378-385.

Martin, J. E. and Gross, M. (2011). Taxonomic clarification of Diplocynodon POMEL, 1847 (Crocodilia) from the Miocene of Styria, Austria. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 261(2): pp. 177-193.

Bastl, K., Nagel, D., Morlo, M., & Göhlich, U.B. (2020). The Carnivora (Mammalia) from the middle Miocene locality of Gračanica (Bugojno Basin, Gornji Vakuf, Bosnia and Herzegovina). In U.B. Göhlich & O. Mandic (Eds.) The drowning swamp of Gračanica (Bosnia-Herzegovina) – a diversity hotspot from the middle Miocene in the Bugojno Basin. Palaeobiodiversity and Palaeoenvironments 100(2). https://doi.org/10.1007/s12549-018-0353-0.

Göhlich, U.B., Mandic, O. (2020). Introduction to the special issue “The drowning swamp of Gračanica (Bosnia-Herzegovina) — a diversity hotspot from the middle Miocene in the Bugojno Basin”. Palaeobio. Palaeoenv. 100, pp. 281–293.

Vasilyan, D. (2020). Fish, amphibian and reptilian assemblage from the middle Miocene locality Gračanica—Bugojno palaeolake, Bosnia and Herzegovina. Palaeobio. Palaeoenv. 100, pp. 437–455.