Paralligator

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Paralligator
Temporal range: Late Cretaceous,
~96–70 Ma
Paralligator Skulls.png
P. gradilifrons and P. major skulls from the Bayan Shireh Formation
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Neosuchia
Family: †Paralligatoridae
Genus: †Paralligator
Type species
†Paralligator gradilifrons
Konzhukova, 1954
Other species
  • †P. ancestralis Efimov, 1981
  • †P. major Konzhukova, 1954
Synonyms
  • Shamosuchus tersus
    Efimov, 1983
  • Shamosuchus ulanicus
    Efimov, 1983
  • Shamosuchus ulgicus
    Efimov, 1981

Paralligator is an extinct genus of neosuchian crocodile that lived during the Late Cretaceous (Cenomanian-Maastrichtian) period in what is now the Bayan Shireh and Nemegt formations of Mongolia, approximately 96 million to 70 million years ago.

Taxonomy[]

P. gradilifrons skulls from the Nemegt Formation

Three species are recognized:[1]

  • Paralligator ancestralis Konzhukova, 1954[2]
  • Paralligator gradilifrons Konzhukova, 1954[2]
  • Paralligator major Efimov 1981[3]

Misassigned species[]

"Paralligator" sungaricus, described from the Early Cretaceous of Jilin Province, China, is based on postcranial remains consisting of a few presacral vertebrae, dorsal osteoderms, a partial left femur, and the proximal part of a left tibia and fibula.[4][5] However, the type material is too fragmentary to be considered diagnostic, and the species is a nomen dubium.[6]

References[]

  1. ^ "†Paralligator Konjukova 1954". Paleobiology Database. Fossilworks. Retrieved 17 December 2021.
  2. ^ a b Konzhukova ED (1954) [New fossil crocodilian from Mongolia]. Trudy Paleontologicheskogo Instituta ANSSSR 48: 171–194.
  3. ^ Efimov MB (1981) New paralligatorids from the Upper Cretaceous of Mongolia. Trudy Sovmestnoi Sovetsko-Mongol'skoi Paleontologicheskoi Ekspeditsii 15: 26–28.
  4. ^ Sun, A.-L. (1958). "A new species of Paralligator from Sungarian Plain". Vertebrata PalAsiatica. 2 (4): 277–280.
  5. ^ Wu, X.-C.; Cheng, Z.-W.; Russell, A. P. (2001). "Cranial anatomy of a new crocodyliform (Archosauria: Crocodylomorpha) from the Lower Cretaceous of Song-Liao Plain, northeastern China". Canadian Journal of Earth Sciences. 38 (12): 1653–1663. doi:10.1139/cjes-38-12-1653.
  6. ^ Turner, A. H. (2015). "A review of Shamosuchus and Paralligator (Crocodyliformes, Neosuchia) from the Cretaceous of Asia". PLOS ONE. 10 (2): e0118116. Bibcode:2015PLoSO..1018116T. doi:10.1371/journal.pone.0118116. PMC 4340866. PMID 25714338.


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