Araripesuchus Pol & Apesteguia, 2005
- GBIF Backbone Taxonomy
Diagnosis. Mid- to large-sized (̴ 4 – 6 m) metasuchians with fused nasals, lacrimalnasal contact absent, postorbital bearing an oval laterally facing fossa that may have served for articulation with the posterior palpebral, squamosal and parietal form a hornlike posterodorsal process, steeply arched ventral jugal margin with a ventrolateral fossa at apex, ectopterygoid vertical and flush at jugal contact rather than arching medially, jaw articulation below posterior tooth row, pterygoid choanal septum with anterior footplate for palatine, pterygoid choanal septum with ventral edge expanded to approximately 40 % of septum length, and pterygoid choanal wall invaginated dorsal to posterior margin of palate, deep mandibular symphysis oriented at approximately 45 ° anterodorsally, dorsolateral ridge on surangular, and maxillary tooth row terminates anterior to orbit.
Etymology. Named on the basis of Mahajangasuchus insignis (Buckley and Brochu 1999), the first described member of the clade. New fossil finds continue to expand basal metasuchian diversity, although interrelationships are poorly established. Establishing this stem-based taxon for Mahajangasuchus, Kaprosuchus and taxa closer to them than to several other metasuchians establishes a well known anchor among basal metasuchians, to which other taxa may eventually be assigned. Phylogenetic definition. The most inclusive clade containing Mahajangasuchus insignis Buckley and Brochu 1999 but not Notosuchus terrestris Woodward 1896, Simosuchus clarki Buckley et al. 2000, Araripesuchus gomesii Price 1959, Baurusuchus pachecoi Price 1945, Peirosaurus torminni Price 1955, Goniopholis crassidens Owen 1842, Pholidosaurus schaumbergensis Meyer 1841, Crocodylus niloticus (Laurenti 1768).
Material. MNN GAD 27; isolated left dentary lacking teeth. Type locality. Gadoufaoua, Agadez District, Niger Republic (more precise locality unknown) (Fig. 1 A, C). Horizon. Elrhaz Formation, Tegama Series; Lower Cretaceous (Aptian-Albian), ca. 110 Mya (Taquet 1976).