Acaenasuchus

Acaenasuchus; Temporal range: Late Triassic, 228–216.5 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	†Aetosauriformes
Genus:	†Acaenasuchus; Long & Murry 1995
Species
	†A. geoffreyi Long & Murry 1995 (type);

Acaenasuchus (meaning "thorn crocodile") is an extinct genus of pseudosuchians, endemic to what would be North America during the Triassic, existing for approximately 11.5 million years.^[1]

Once considered a juvenile of Desmatosuchus, recent work and new material has demonstrated that it is a fully-grown and diagnostic taxon. It was found to be closely related to Revueltosaurus and Euscolosuchus in a new phylogenetic analysis.^[2]

Taxonomy[]

Acaenasuchus was named by Long and Murry (1995). Its type is Acaenasuchus geoffreyi. It was assigned to Stagonolepididae by Irmis (2005).^[3]

References[]

^ Paleobiology Database: Acaenasuchus, basic info
^ Marsh, Adam D.; Smith, Matthew E.; Parker, William G.; Irmis, Randall B.; Kligman, Ben T. (2020-10-12). "Skeletal Anatomy of Acaenasuchus Geoffreyi Long and Murry, 1995 (Archosauria: Pseudosuchia) and its Implications for the Origin of the Aetosaurian Carapace". Journal of Vertebrate Paleontology. 40 (4): e1794885. doi:10.1080/02724634.2020.1794885. ISSN 0272-4634.
^ R. B. Irmis. 2005. The vertebrate fauna of the Upper Triassic Chinle Formation in northern Arizona. In S. J. Nesbitt, W. G. Parker, & R. B. Irmis (eds.), Guidebook to the Triassic Formations of the Colorado Plateau in Northern Arizona: Geology, Paleontology, and History. Mesa Southwest Museum Bulletin 9:63-88

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[1] Paleobiology Database: Acaenasuchus, basic info

[2] Marsh, Adam D.; Smith, Matthew E.; Parker, William G.; Irmis, Randall B.; Kligman, Ben T. (2020-10-12). "Skeletal Anatomy of Acaenasuchus Geoffreyi Long and Murry, 1995 (Archosauria: Pseudosuchia) and its Implications for the Origin of the Aetosaurian Carapace". Journal of Vertebrate Paleontology. 40 (4): e1794885. doi:10.1080/02724634.2020.1794885. ISSN 0272-4634.

[3] R. B. Irmis. 2005. The vertebrate fauna of the Upper Triassic Chinle Formation in northern Arizona. In S. J. Nesbitt, W. G. Parker, & R. B. Irmis (eds.), Guidebook to the Triassic Formations of the Colorado Plateau in Northern Arizona: Geology, Paleontology, and History. Mesa Southwest Museum Bulletin 9:63-88

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