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Juvenile morphology: A clue to the origins of the most mysterious of mysticetes?
(Springer, 2013-03)
The origin of the pygmy right whale (Caperea marginata) has long been one of the most vexing conundrums of marine mammal evolution. The extremely disparate skeletal structure ofCapereaand a patchy fossil record have left ...
Early Middle Ordovician scolecodonts from north-western Argentina and the emergence of labidognath polychaete jaw apparatuses
(Wiley Blackwell Publishing, Inc, 2017-07)
Scolecodonts provide fossil evidence of the evolution and diversification of jaw-bearing polychaetes from the latest Cambrian onwards. However, their record before the Darriwilian (Middle Ordovician) is scarce worldwide, ...
New remains of the dryolestoid mammal Leonardus cuspidatus from the Los Alamitos Formation (Late Cretaceous, Argentina)
(Springer Heidelberg, 2011-09)
The great diversity of mammals from the Los Alamitos Formation (Campanian-Maastrichtian) in Río Negro Province, Argentina has provided significant information about the evolution of South American dryolestoids. Among these ...
Reconstruction of the Masticatory Apparatus of the Holotype of the Rhynchosaur Hyperodapedon sanjuanensis from the Late Triassic of Argentina: Implications for the Diagnosis of the Species
(Asociación Paleontológica Argentina, 2018-05)
Rhynchosaurs are a clade of robust, quadruped, and herbivorous stem-archosauromorph diapsids restricted to the Triassic Period. Most species have a specialized masticatory apparatus composed of a blade-and-groove occlusion ...
New proterochampsid specimens expand the morphological diversity of the rhadinosuchines of the chañares formation (lower carnian, Northwestern Argentina)Nuevos especímenes de proterochámpsidos expanden la diversidad morfológica de los rhadinosuquinos de la formación chañares (carniano inferior, Noroeste de Argentina)
(Asociación Paleontológica Argentina, 2019-06-09)
Los proterochámpsidos son arcosauriformes no arcosaurianos de tamaño mediano a pequeño, predadores y cuadrúpedos, parecidos a los cocodrilos. Los rhadinosuquinos son un clado profundamente anidado dentro de los proterochámpsidos ...
On the osteology of a distinctive specie of the genus Leptodactylus: Leptodactylus laticeps (Boulenger, 1917) (Anura, Leptodactylidae)
(Magnolia Press, 2006-12)
The osteology of Leptodactylus laticeps is described. This species is the most distinctive member of the pentadactylus species group, and possibly of the genus Leptodactylus, based on external morphology, skin secretions ...
Prosqualodon australis (Cetacea: Odontoceti) from the Early Miocene of Patagonia, Argentina: Redescription and Phylogenetic Analysis
(Asociación Paleontológica Argentina, 2019-05)
We re-describe the holotype and referred specimen of Prosqualodon australis, from the early Miocene of Gaiman Formation (Chubut Province, Argentina), and analyse its phylogenetic position. Our study shows that this taxon ...
Consideraciones ecomorfológicas del mecanismo de captura de presas en Xiphias gladius (Linnaeus, 1758)Ecomorphological considerations of the prey capture mechanism of Xiphias gladius (Linnaeus, 1758)
(Pontificia Universidad Católica de Valparaíso, 2017)