Navajosuchus Temporal range:
Paleocene,
| |
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Navajosuchus sp. in National Museum of Nature and Science | |
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Clade: | Archosauromorpha |
Clade: | Archosauriformes |
Order: | Crocodilia |
Family: | Alligatoridae |
Subfamily: | Alligatorinae |
Genus: | †
Navajosuchus Mook, 1942 |
Type species | |
†Navajosuchus mooki (
Simpson, 1930 [originally
Allognathosuchus mooki])
|
Navajosuchus is an extinct genus of alligatorine crocodylian. Its fossils have been found in the Paleocene-age Nacimiento Formation of the San Juan Basin, New Mexico ( United States). It was named in 1942 by Charles C. Mook, and the original type species was N. novomexicanus. N. novomexicanus was based on AMNH 5186, a partial skull collected in 1913. [2] Later research showed that Navajosuchus novomexicanus was the same as the earlier-named Allognathosuchus mooki. [3] However, A. mooki does not belong to the genus Allognathosuchus, and so the name of the crocodilian becomes Navajosuchus mooki. [4] Under whichever name is used, this animal would have been a generalized predator of the Nacimiento floodplains. It was the most common Nacimiento Formation crocodilian, found in both the Puercan and Torrejonian faunal assemblages. [5]
The precise placement of Navajosuchus within Alligatoroidea is disputed. Some studies have shown it as a basal member of Alligatoridae, within the stem-based group Alligatorinae, [6] [7] as shown in the cladogram below. [7]
Alligatoroidea |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
( stem-based group) |
Alternatively, other studies have recovered Navajosuchus outside of Alligatoridae and Alligatorinae, as a basal member of Alligatoroidea within the clade Globidonta, [8] [9] as shown in the cladogram below. [9]
Navajosuchus Temporal range:
Paleocene,
| |
---|---|
![]() | |
Navajosuchus sp. in National Museum of Nature and Science | |
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Clade: | Archosauromorpha |
Clade: | Archosauriformes |
Order: | Crocodilia |
Family: | Alligatoridae |
Subfamily: | Alligatorinae |
Genus: | †
Navajosuchus Mook, 1942 |
Type species | |
†Navajosuchus mooki (
Simpson, 1930 [originally
Allognathosuchus mooki])
|
Navajosuchus is an extinct genus of alligatorine crocodylian. Its fossils have been found in the Paleocene-age Nacimiento Formation of the San Juan Basin, New Mexico ( United States). It was named in 1942 by Charles C. Mook, and the original type species was N. novomexicanus. N. novomexicanus was based on AMNH 5186, a partial skull collected in 1913. [2] Later research showed that Navajosuchus novomexicanus was the same as the earlier-named Allognathosuchus mooki. [3] However, A. mooki does not belong to the genus Allognathosuchus, and so the name of the crocodilian becomes Navajosuchus mooki. [4] Under whichever name is used, this animal would have been a generalized predator of the Nacimiento floodplains. It was the most common Nacimiento Formation crocodilian, found in both the Puercan and Torrejonian faunal assemblages. [5]
The precise placement of Navajosuchus within Alligatoroidea is disputed. Some studies have shown it as a basal member of Alligatoridae, within the stem-based group Alligatorinae, [6] [7] as shown in the cladogram below. [7]
Alligatoroidea |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
( stem-based group) |
Alternatively, other studies have recovered Navajosuchus outside of Alligatoridae and Alligatorinae, as a basal member of Alligatoroidea within the clade Globidonta, [8] [9] as shown in the cladogram below. [9]