000164096 001__ 164096
000164096 005__ 20251121161351.0
000164096 0247_ $$2doi$$a10.1002/spp2.70045
000164096 0248_ $$2sideral$$a146193
000164096 037__ $$aART-2025-146193
000164096 041__ $$aeng
000164096 100__ $$aLópez-Rojas, Víctor
000164096 245__ $$aSystematic utility of the phytosaur post‐dentary mandibular region
000164096 260__ $$c2025
000164096 5060_ $$aAccess copy available to the general public$$fUnrestricted
000164096 5203_ $$aPhytosaurs, crocodile-like archosaurs from the Late Triassic, are known for their unique skull shape, whereas their mandibles are poorly studied. Two-dimensional (2D) geometric morphometric (GM) analysis is commonly used on dinosaurs and mammals. We applied this technique for the first time to the study of phytosaur mandibles to identify and quantify morphological differences outside the skull for use in phylogenetic analysis. The 2D GM analysis showed that the dorsal shape of the surangular had significant phylogenetic utility. This led to the reformulation of two characters (shape of the dorsal margin of the surangular, and shape of the retroarticular process) and the creation of four more new characters: shape of the ventral margin of the angular, dorsoventral height of the external mandibular fenestra, suture between the dentary and surangular, and the dorsal margin transition angle between the dentary and the surangular. Furthermore, three of these were identified as synapomorphies for the clade Leptosuchomorpha. To test the hypothesis that the mandible is taxonomically relevant, we ran a second analysis including two problematic, mandible specimens: NOVA-FCT-DCT 5396 (Silves Group, Portugal); and NMMNHS P-4256 (Bull Canyon Formation, New Mexico; which has been referred to Machaeroprosopus and Redondasaurus in previous studies). The analysis provided better resolution for these indeterminate specimens, suggesting that NOVA-FCT-DCT 5396 is Angistorhinus cf. talainti, and NMMNHS P-4256 is cf. Machaeroprosopus (Mystriosuchini).
000164096 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000164096 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000164096 700__ $$0(orcid)0000-0002-7210-1033$$aMoreno-Azanza, Miguel$$uUniversidad de Zaragoza
000164096 700__ $$0(orcid)0000-0003-0759-7105$$aPuértolas-Pascual, Eduardo
000164096 7102_ $$12000$$2655$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Paleontología
000164096 773__ $$g11, 6 (2025), e70045 [23 pp.]$$pPap. Palaeontol.$$tPapers in Palaeontology$$x2056-2799
000164096 8564_ $$s12347460$$uhttps://zaguan.unizar.es/record/164096/files/texto_completo.pdf$$yVersión publicada
000164096 8564_ $$s2696927$$uhttps://zaguan.unizar.es/record/164096/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000164096 909CO $$ooai:zaguan.unizar.es:164096$$particulos$$pdriver
000164096 951__ $$a2025-11-21-14:26:25
000164096 980__ $$aARTICLE