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Found 3 results

  1. oilshale

    Diplocynodon sp.

    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.
  2. oilshale

    Diplocynodon sp.

    From the album: Vertebrates

    Diplocynodon sp. Middle Miocene Gracanica Bosnia and Herzegovina Prepped with the Messel Transfer Technique
  3. Prepped by transfer method. For about 30 years, I wasn't sure whether this juvenile crocodile was Diplocynodon darwini or Allognathosuchus haupti. Dr. Alex Hastings from the Virginia Museum of Natural History was so kind to determine it: "It looks to me like a young Diplocynodon darwini. I say D. darwini instead of D. deponiae mostly because of the general lack of osteoderms on the tail and legs. Allognathosuchus has more of a round snout/head, and even at this size would look more mature. The fenestrae at the back of the skull are still fairly oblong and the eyes are overly large, indicating a pretty young individual, maybe a year or two old. It looks a lot like several of the young D. darwini we had from Geiseltal, which overlaps in age and environment with Messel." References: Ludwig, R. (1877) Fossile Crocodiliden aus der Tertiärformation des Mainzer Beckens. Palaeontographica, Supplement 4 (5), 1-52. Rossmann, T. & Blume, M. (1999): Die Krokodilfauna der Grube Messel, Natur und Museum, Vol 129, p. 261-270. Hastings, A.K. and M. Hellmund (2015): Rare in situ preservation of adult crocodylian with eggs from the Middle Eocene of Geiseltal, Germany. Palaios, 30(6):446–461. Rio, J. P., Mannion, P. D. Tschopp, E., Martin, J. E., and Delfino. M. (2020) Reappraisal of the morphology and phylogenetic relationships of the alligatoroid crocodylian Diplocynodon hantoniensis from the late Eocene of the United Kingdom. Zoological Journal of the Linnean Society 188:579-629.
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