dyrosaurid crocodylomorph from the Late Paleocene of Morocco, found in the region of Sidi Chenane in 2000, following collaboration by French and Moroccan institutions, and described in 2005 by a team led by palaeontologist Stéphane Jouve.Arambourgisuchus ("[Prof. Camille] Arambourg's crocodile") was a
Four specimens of this taxon have been found:
- OCP DEK-GE 300 (holotype): nearly complete and crushed skull, lacking the anterior part of the rostrum
- OCP DEK-GE 18: crushed, almost complete skull, including mandible
- OCP DEK-GE 269: posterior part of mandibular symphysis with five or six teeth alveoli on each side
- OCP DEK-GE 1200: Anteriormost portion of a mandibular symphysis
- presence of large occipital tuberosities
- supratemporal fenestra largely longer than wide
According to Jouve et al. (2005), it is probably one of the most derived forms, but the lack of better material makes a correct determination of its affinities difficult.
The skull of A. khourbgaensis was proportionally one of the longest among all of the Dyrosauridae, reaching a length of 1 meter. Its teeth were sharp but strong and large, as well as being less numerous than the ones in Dyrosaurus phosphaticus.
Like other dyrosaurids, it was a marine predator.
- Jouve, S., Iarochène, M., Bouya, B. & Amaghzaz, M., (2005) A new dyrosaurid crocodyliform from the Palaeocene of Morocco and a phylogenetic analysis of Dyrosauridae. Acta Palaeontologica Polonica 50 (3): 581-594.