Paralligator

Paralligator; Temporal range: Late Cretaceous,; ~96–70 Ma PreꞒ Ꞓ O S D C P T J K Pg N
	P. gradilifrons and P. major skulls from the Bayan Shireh Formation
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauria
Clade:	Pseudosuchia
Clade:	Crocodylomorpha
Clade:	Crocodyliformes
Clade:	Neosuchia
Family:	†Paralligatoridae
Genus:	†Paralligator
Type species
	†Paralligator gradilifrons; Konzhukova, 1954
Other species
	†P. ancestralis Efimov, 1981; †P. major Efimov, 1981;
Synonyms
	Shamosuchus tersus ; Efimov, 1983; Shamosuchus ulanicus ; Efimov, 1983; Shamosuchus ulgicus ; Efimov, 1981;

Paralligator is an extinct genus of neosuchian crocodylomorph 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. P. gradilifrons reached up to 4 m (13 ft) in length.^[1]^[2]

Taxonomy

Two species are recognized:^[3]

Paralligator gradilifrons Konzhukova, 1954^[4]
Paralligator major Efimov, 1981^[5]

Misassigned species

"Paralligator" sungaricus, described from the Early Cretaceous Nenjiang Formation 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.^[6]^[7] However, the type material is too fragmentary to be considered diagnostic, and the species is a nomen dubium.^[3] Turner (2015) also referred P. ancestralis a junior subjective synonym of P. gradilifrons.^[3]

References

^ Storrs, G. W.; Efimov, M. B. (2000). "Mesozoic crocodyliforms of north-central Eurasia". In Michael J. Benton; Mikhail A. Shishkin; David M. Unwin; Evgenii N. Kurochkin (eds.). The Age of Dinosaurs in Russia and Mongolia. Cambridge University Press. pp. 402–419.
^ Turner, Alan H. (2015-02-25). "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. ISSN 1932-6203. PMC 4340866. PMID 25714338.
^ ^a ^b ^c 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.
^ Konzhukova ED (1954) [New fossil crocodilian from Mongolia]. Trudy Paleontologicheskogo Instituta ANSSSR 48: 171–194.
^ Efimov MB (1981) New paralligatorids from the Upper Cretaceous of Mongolia. Trudy Sovmestnoi Sovetsko-Mongol'skoi Paleontologicheskoi Ekspeditsii 15: 26–28.
^ Sun, A.-L. (1958). "A new species of Paralligator from Sungarian Plain". Vertebrata PalAsiatica. 2 (4): 277–280.
^ 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.

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[SE03-1] Storrs, G. W.; Efimov, M. B. (2000). "Mesozoic crocodyliforms of north-central Eurasia". In Michael J. Benton; Mikhail A. Shishkin; David M. Unwin; Evgenii N. Kurochkin (eds.). The Age of Dinosaurs in Russia and Mongolia. Cambridge University Press. pp. 402–419.

[2] Turner, Alan H. (2015-02-25). "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. ISSN 1932-6203. PMC 4340866. PMID 25714338.

[Turner2015-3] 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.

[Konzhukova_1954-4] Konzhukova ED (1954) [New fossil crocodilian from Mongolia]. Trudy Paleontologicheskogo Instituta ANSSSR 48: 171–194.

[Efimov_1981-5] Efimov MB (1981) New paralligatorids from the Upper Cretaceous of Mongolia. Trudy Sovmestnoi Sovetsko-Mongol'skoi Paleontologicheskoi Ekspeditsii 15: 26–28.

[SAL58-6] Sun, A.-L. (1958). "A new species of Paralligator from Sungarian Plain". Vertebrata PalAsiatica. 2 (4): 277–280.

[WCR01-7] 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.

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