New hadrosaurid dinosaurs from the middle Campanian (Upper Cretaceous) of Sonora (Mexico) extend the South American kritosaurin lineage to southern Laramidia
The non-marine deposits of the Campanian–early Maastrichtian Cabullona Group (north-eastern Sonora, north-western Mexico) have yielded abundant fossils of continental vertebrates, including dinosaurs. However, this dinosaur fauna has yet to be studied in detail. We describe three partial hadrosaurid...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:dnet:uabarcelona_::c6647918b2a3c8275c15d633dbfe879f |
| Acceso en línea: | https://ddd.uab.cat/record/328669 https://dx.doi.org/urn:doi:10.1080/14772019.2026.2656218 |
| Access Level: | acceso embargado |
| Palabra clave: | Cretaceous Dinosauria Hadrosauridae Laramidia Mexico evolution |
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| spelling |
New hadrosaurid dinosaurs from the middle Campanian (Upper Cretaceous) of Sonora (Mexico) extend the South American kritosaurin lineage to southern Laramidia Duarte-Bigurra, Ruben|||0000-0002-1510-7084 Vicente, Alba|||0000-0002-0313-7104 Gutiérrez-Blando, Cirene|||0000-0002-1377-0579 Serrano-Brañas, Claudia Inés|||0000-0002-3607-2642 Wagner, Jonathan R.|||0009-0003-4907-190X Prieto-Márquez, Albert|||0000-0002-4836-4052 Cretaceous Dinosauria Hadrosauridae Laramidia Mexico evolution The non-marine deposits of the Campanian–early Maastrichtian Cabullona Group (north-eastern Sonora, north-western Mexico) have yielded abundant fossils of continental vertebrates, including dinosaurs. However, this dinosaur fauna has yet to be studied in detail. We describe three partial hadrosaurid specimens from two localities (Arroyo del Alamito and Puerto Viejo) in the Fronteras Municipality of Sonora. All three localities correspond to the middle Campanian strata of the lower part of the Fronteras section of the Cabullona Group. The specimens are represented by partial axial and appendicular elements. The most complete individual (2997 PM 1) was collected at Puerto Viejo and consists of several axial elements, a partially complete pelvic girdle and hindlimb fragments. The parsimony phylogenetic analysis positioned the three Fronteras specimens deeply nested within the speciose saurolophine tribe Kritosaurini, as members of a subclade so far restricted to Patagonia, Argentina (here informally referred to as ‘secernosaurs’). Thus, the Fronteras hadrosaurids represent the first record of secernosaurs outside South America, greatly extending their biogeographical distribution to Late Cretaceous southern Laramidia. Inference of ancestral areas for the clades recovered in the phylogeny supports the hypothesis that hadrosauroids dispersed to South America via Southern Laramidia. https://ddd.uab.cat/record/328669 https://dx.doi.org/urn:doi:10.1080/14772019.2026.2656218 |
| title |
New hadrosaurid dinosaurs from the middle Campanian (Upper Cretaceous) of Sonora (Mexico) extend the South American kritosaurin lineage to southern Laramidia |
| spellingShingle |
New hadrosaurid dinosaurs from the middle Campanian (Upper Cretaceous) of Sonora (Mexico) extend the South American kritosaurin lineage to southern Laramidia Duarte-Bigurra, Ruben|||0000-0002-1510-7084 Cretaceous Dinosauria Hadrosauridae Laramidia Mexico evolution |
| title_short |
New hadrosaurid dinosaurs from the middle Campanian (Upper Cretaceous) of Sonora (Mexico) extend the South American kritosaurin lineage to southern Laramidia |
| title_full |
New hadrosaurid dinosaurs from the middle Campanian (Upper Cretaceous) of Sonora (Mexico) extend the South American kritosaurin lineage to southern Laramidia |
| title_fullStr |
New hadrosaurid dinosaurs from the middle Campanian (Upper Cretaceous) of Sonora (Mexico) extend the South American kritosaurin lineage to southern Laramidia |
| title_full_unstemmed |
New hadrosaurid dinosaurs from the middle Campanian (Upper Cretaceous) of Sonora (Mexico) extend the South American kritosaurin lineage to southern Laramidia |
| title_sort |
New hadrosaurid dinosaurs from the middle Campanian (Upper Cretaceous) of Sonora (Mexico) extend the South American kritosaurin lineage to southern Laramidia |
| author |
Duarte-Bigurra, Ruben|||0000-0002-1510-7084 |
| author_facet |
Duarte-Bigurra, Ruben|||0000-0002-1510-7084 Vicente, Alba|||0000-0002-0313-7104 Gutiérrez-Blando, Cirene|||0000-0002-1377-0579 Serrano-Brañas, Claudia Inés|||0000-0002-3607-2642 Wagner, Jonathan R.|||0009-0003-4907-190X Prieto-Márquez, Albert|||0000-0002-4836-4052 |
| author_role |
author |
| author2 |
Vicente, Alba|||0000-0002-0313-7104 Gutiérrez-Blando, Cirene|||0000-0002-1377-0579 Serrano-Brañas, Claudia Inés|||0000-0002-3607-2642 Wagner, Jonathan R.|||0009-0003-4907-190X Prieto-Márquez, Albert|||0000-0002-4836-4052 |
| author2_role |
author author author author author |
| topic |
Cretaceous Dinosauria Hadrosauridae Laramidia Mexico evolution |
| topic_facet |
Cretaceous Dinosauria Hadrosauridae Laramidia Mexico evolution |
| description |
The non-marine deposits of the Campanian–early Maastrichtian Cabullona Group (north-eastern Sonora, north-western Mexico) have yielded abundant fossils of continental vertebrates, including dinosaurs. However, this dinosaur fauna has yet to be studied in detail. We describe three partial hadrosaurid specimens from two localities (Arroyo del Alamito and Puerto Viejo) in the Fronteras Municipality of Sonora. All three localities correspond to the middle Campanian strata of the lower part of the Fronteras section of the Cabullona Group. The specimens are represented by partial axial and appendicular elements. The most complete individual (2997 PM 1) was collected at Puerto Viejo and consists of several axial elements, a partially complete pelvic girdle and hindlimb fragments. The parsimony phylogenetic analysis positioned the three Fronteras specimens deeply nested within the speciose saurolophine tribe Kritosaurini, as members of a subclade so far restricted to Patagonia, Argentina (here informally referred to as ‘secernosaurs’). Thus, the Fronteras hadrosaurids represent the first record of secernosaurs outside South America, greatly extending their biogeographical distribution to Late Cretaceous southern Laramidia. Inference of ancestral areas for the clades recovered in the phylogeny supports the hypothesis that hadrosauroids dispersed to South America via Southern Laramidia. |
| publishDate |
2026 |
| format |
article |
| url |
https://ddd.uab.cat/record/328669 https://dx.doi.org/urn:doi:10.1080/14772019.2026.2656218 |
| language |
eng |
| eu_rights_str_mv |
embargoedAccess |
| institution |
Universitat Autònoma de Barcelona |
| collection |
Dipòsit Digital de Documents de la UAB |
| reponame_str |
Dipòsit Digital de Documents de la UAB |
| instname_str |
Universitat Autònoma de Barcelona |
| _version_ |
1878742898018615296 |
| publishDateSort |
2026 |
| author_browse |
Duarte-Bigurra, Ruben|||0000-0002-1510-7084 Gutiérrez-Blando, Cirene|||0000-0002-1377-0579 Prieto-Márquez, Albert|||0000-0002-4836-4052 Serrano-Brañas, Claudia Inés|||0000-0002-3607-2642 Vicente, Alba|||0000-0002-0313-7104 Wagner, Jonathan R.|||0009-0003-4907-190X |
| score |
6,8972664 |