| Parvosuchus | |
|---|---|
| |
| Holotype skull | |
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauria |
| Clade: | Pseudosuchia |
| Family: | † Gracilisuchidae |
| Genus: | †
Parvosuchus Müller, 2024 |
| Species: | †P. aurelioi
|
| Binomial name | |
| †Parvosuchus aurelioi Müller, 2024
| |
Parvosuchus (meaning "small crocodile") is an extinct genus of gracilisuchid pseudosuchians from the Middle– Late Triassic Santa Maria Formation ( Paraná Basin) of Brazil. The genus contains a single species, P. aurelioi, known from a cranium and partial skeleton.
Discovery and naming
The Parvosuchus holotype specimen, CAPPA/ UFSM 0412, was discovered at the Linha Várzea 2 site in the Pinheiros-Chiniquá Sequence, which belongs to the Santa Maria Formation of the Santa Maria Supersequence ( Paraná Basin) in Paraíso do Sul municipality of Rio Grande do Sul state, Brazil. This locality represents the Dinodontosaurus Assemblage Zone. The specimen consists of a largely articulated skeleton, including the skull and lower jaws, the last 11 dorsal vertebrae, two sacral vertebrae, a pelvic girdle, part of the right femur, and a partial left hindlimb (comprising pieces of the femur, tibia, fibula, and calcaneum). [1]
In 2024, Rodrigo T. Müller described Parvosuchus aurelioi as a new genus and species of gracilisuchid pseudosuchians based on these fossil remains. The generic name, Parvosuchus, combines "parvus", a Latin word meaning "small", with "suchus", a Greek word meaning "crocodile" ( σοῦχος, after Sobek, the crocodile-headed ancient Egyptian deity). The specific name, aurelioi, honors Pedro L. P. Aurélio, the discoverer of the holotype. [1] [2]
Description
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The skull of Parvosuchus is 144 millimetres (5.7 in) long. Based on its fossil remains and those of more complete relatives, its body length is estimated at 1 metre (3.3 ft). Its teeth are blade-like and elongated, a feature indicative of predatory behavior and carnivorous habits. [1]
Classification
In his phylogenetic analyses, Müller (2024) recovered Parvosuchus in a clade with Maehary (which was originally identified as an early pterosauromorph [3]) and Gracilisuchus within the Gracilisuchidae. These results are displayed in the cladogram below: [1]
References
- ^ a b c d Müller, Rodrigo T. (2024-06-20). "A new small-sized predatory pseudosuchian archosaur from the Middle-Late Triassic of Southern Brazil". Scientific Reports. 14 (1): 12706. doi: 10.1038/s41598-024-63313-3. ISSN 2045-2322.
- ^ Nature Publishing Group. "New, small, ancient crocodile-like reptile described in Brazil". phys.org. Retrieved 2024-06-20.
- ^ Kellner, A.W.A.; Holgado, B.; Grillo, O.; Pretto, F.A.; Kerber, L.; Pinheiro, F.L.; Soares, M.B.; Schultz, C.L.; Lopes, R.T.; Araújo, A.; Müller, R.T. (2022). "Reassessment of Faxinalipterus minimus, a purported Triassic pterosaur from southern Brazil with the description of a new taxon". PeerJ. 10: e13276. doi: 10.7717/peerj.13276. PMC 9074864. PMID 35529502.
| Parvosuchus | |
|---|---|
|
| |
| Holotype skull | |
|
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauria |
| Clade: | Pseudosuchia |
| Family: | † Gracilisuchidae |
| Genus: | †
Parvosuchus Müller, 2024 |
| Species: | †P. aurelioi
|
| Binomial name | |
| †Parvosuchus aurelioi Müller, 2024
| |
Parvosuchus (meaning "small crocodile") is an extinct genus of gracilisuchid pseudosuchians from the Middle– Late Triassic Santa Maria Formation ( Paraná Basin) of Brazil. The genus contains a single species, P. aurelioi, known from a cranium and partial skeleton.
Discovery and naming
The Parvosuchus holotype specimen, CAPPA/ UFSM 0412, was discovered at the Linha Várzea 2 site in the Pinheiros-Chiniquá Sequence, which belongs to the Santa Maria Formation of the Santa Maria Supersequence ( Paraná Basin) in Paraíso do Sul municipality of Rio Grande do Sul state, Brazil. This locality represents the Dinodontosaurus Assemblage Zone. The specimen consists of a largely articulated skeleton, including the skull and lower jaws, the last 11 dorsal vertebrae, two sacral vertebrae, a pelvic girdle, part of the right femur, and a partial left hindlimb (comprising pieces of the femur, tibia, fibula, and calcaneum). [1]
In 2024, Rodrigo T. Müller described Parvosuchus aurelioi as a new genus and species of gracilisuchid pseudosuchians based on these fossil remains. The generic name, Parvosuchus, combines "parvus", a Latin word meaning "small", with "suchus", a Greek word meaning "crocodile" ( σοῦχος, after Sobek, the crocodile-headed ancient Egyptian deity). The specific name, aurelioi, honors Pedro L. P. Aurélio, the discoverer of the holotype. [1] [2]
Description
The skull of Parvosuchus is 144 millimetres (5.7 in) long. Based on its fossil remains and those of more complete relatives, its body length is estimated at 1 metre (3.3 ft). Its teeth are blade-like and elongated, a feature indicative of predatory behavior and carnivorous habits. [1]
Classification
In his phylogenetic analyses, Müller (2024) recovered Parvosuchus in a clade with Maehary (which was originally identified as an early pterosauromorph [3]) and Gracilisuchus within the Gracilisuchidae. These results are displayed in the cladogram below: [1]
References
- ^ a b c d Müller, Rodrigo T. (2024-06-20). "A new small-sized predatory pseudosuchian archosaur from the Middle-Late Triassic of Southern Brazil". Scientific Reports. 14 (1): 12706. doi: 10.1038/s41598-024-63313-3. ISSN 2045-2322.
- ^ Nature Publishing Group. "New, small, ancient crocodile-like reptile described in Brazil". phys.org. Retrieved 2024-06-20.
- ^ Kellner, A.W.A.; Holgado, B.; Grillo, O.; Pretto, F.A.; Kerber, L.; Pinheiro, F.L.; Soares, M.B.; Schultz, C.L.; Lopes, R.T.; Araújo, A.; Müller, R.T. (2022). "Reassessment of Faxinalipterus minimus, a purported Triassic pterosaur from southern Brazil with the description of a new taxon". PeerJ. 10: e13276. doi: 10.7717/peerj.13276. PMC 9074864. PMID 35529502.
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