000162568 001__ 162568
000162568 005__ 20251017144613.0
000162568 0247_ $$2doi$$a10.1093/zoolinnean/zlaf092
000162568 0248_ $$2sideral$$a145101
000162568 037__ $$aART-2025-145101
000162568 041__ $$aeng
000162568 100__ $$aMaréchal, Arthur
000162568 245__ $$aA new Maastrichtian hyposaurine dyrosaurid (Crocodylomorpha) from Namibe province, Angola
000162568 260__ $$c2025
000162568 5060_ $$aAccess copy available to the general public$$fUnrestricted
000162568 5203_ $$aDyrosauridae are one of the few clades of large marine vertebrates that survived the Cretaceous/Palaeogene (K–Pg) extinction event. The early diversification of this clade, dated to the Cretaceous, is still poorly understood. We describe a new specimen of Dyrosauridae from the Late Cretaceous of Bentiaba, Angola, represented by a posterior portion of the skull, a left ectopterygoid fragment, and a tooth. Comparative morphological analysis reveals a unique combination of characters distinguishing it from known dyrosaurid taxa but due to the fragmentary nature of the specimen and the absence of key diagnostic features, we assign it to Hyposaurinae indet.. Phylogenetic relationships were tested through maximum parsimony and Bayesian inference, using the SFBD model with time-binning criteria for the K–Pg boundary. Both of our phylogenetic analyses recover this new specimen as Hyposaurinae, which is consistent with our comparative study. Evolutionary rates accelerated during the latest stages of the Cretaceous, although the fossil bias prevents the ability to appreciate their impact on cladogenetic events. We estimated diversification, fossilization, and extinction rates, and we did not find evidence of radiation after the K–Pg in this clade. Biogeographically, this discovery supports hypotheses of longirostrine crocodyliform dispersal in Africa leading to hyposaurine diversification during the Maastrichtian.
000162568 536__ $$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-122612OB-I00
000162568 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000162568 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000162568 700__ $$aRotatori, Filippo Maria
000162568 700__ $$aMerella, Marco
000162568 700__ $$0(orcid)0000-0003-0759-7105$$aPuértolas-Pascual, Eduardo
000162568 700__ $$aSequero, Cristina
000162568 700__ $$aPereira, Ricardo
000162568 700__ $$aNsungani, Pedro
000162568 700__ $$aMateus, Octávio
000162568 773__ $$g204, 4 (2025), [19 pp.]$$pZool. j. Linn. Soc.$$tZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY$$x0024-4082
000162568 8564_ $$s10683384$$uhttps://zaguan.unizar.es/record/162568/files/texto_completo.pdf$$yVersión publicada
000162568 8564_ $$s2700562$$uhttps://zaguan.unizar.es/record/162568/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000162568 909CO $$ooai:zaguan.unizar.es:162568$$particulos$$pdriver
000162568 951__ $$a2025-10-17-14:18:11
000162568 980__ $$aARTICLE