Results 81 to 90 of about 4,369 (218)
A king-sized theropod coprolite [PDF]
Nature, 1998 Fossil faeces (coprolites) provide unique trophic perspectives on ancient ecosystems. Yet, although thousands of coprolites have been discovered, specimens that can be unequivocally attributed to carnivorous dinosaurs are almost unknown. A few fossil faeces have been ascribed to herbivorous dinosaurs1,2,3, but it is more difficult to identify ...
Karen Chin +3 more
openaire +1 more source
ABELISAURID PEDAL UNGUALS FROM THE LATE CRETACEOUS OF INDIA
Publicación Electrónica de la Asociación Paleontológica Argentina, 2015 The ungual phalanges of theropod dinosaurs discovered in the Lameta Formation (Maastrichtian), central India, exhibit distinctive characters unknown in other theropods.
Fernando E. Novas, Saswati Bandyopadhyay
doaj
NEW ABELISAURID MATERIAL FROM THE UPPER CRETACEOUS (CENOMANIAN) OF MOROCCO
Rivista Italiana di Paleontologia e Stratigrafia, 2011 Fragmentary cranial bones of dinosaur origin have been recently recovered from the Kem Kem beds (Upper Cretaceous, Cenomanian) of Morocco. They include two incompletely preserved maxillary bones evidencing diagnostic features of abelisaurid theropods ...
SIMONE D'ORAZI PORCHETTI +3 more
doaj +1 more source
_Limusaurus_ and bird digit identity [PDF]
, 2009 _Limusaurus_ is a remarkable herbivorous ceratosaur unique among theropods in having digits II, III and IV, with only a small metacarpal vestige of digit I. This raises interesting questions regarding the controversial identity of avian wing digits.
Alexander O. Vargas +2 more
core +1 more source
Osteohistology of two phorusrhacids reveals uninterrupted growth strategy
The Anatomical Record, EarlyView.Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer +2 more
wiley +1 more source
Nasal soft‐tissue anatomy of Triceratops and other horned dinosaurs
The Anatomical Record, EarlyView.Abstract Although ceratopsid dinosaurs possess a characteristically hypertrophied narial region, soft‐tissue anatomy associated with such a skeletal structure and their biological significance remain poorly understood. The present study provides the first comprehensive hypothesis on the soft‐tissue anatomy in the ceratopsid rostrum based on the Extant ...
Seishiro Tada +5 more
wiley +1 more source
A Jurassic ornithischian dinosaur from Siberia with both feathers and scales [PDF]
, 2014 Feathers, not just for the birds? Theropod dinosaurs, thought to be the direct ancestors of birds, sported birdlike feathers. But were they the only feathery dino group? Godefroit et al.
Benton, Michael J +7 more
core +1 more source
The Anatomical Record, EarlyView.Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison +9 more
wiley +1 more source
Ontogenetic changes in the craniomandibular skeleton of the abelisaurid dinosaur Majungasaurus crenatissimus from the Late Cretaceous of Madagascar [PDF]
Acta Palaeontologica Polonica, 2016 Abelisaurid theropods were one of the most diverse groups of predatory dinosaurs in Gondwana during the Cretaceous. The group is characterized by a tall, wide skull and robust cervical region.
Nirina O. Ratsimbaholison +2 more
doaj +1 more source
Basal paravian functional anatomy illuminated by high-detail body outline [PDF]
, 2017 Body shape is a fundamental expression of organismal biology, but its quantitative reconstruction in fossil vertebrates is rare. Due to the absence of fossilized soft tissue evidence, the functional consequences of basal paravian body shape and its ...
Falk, AR +6 more
core +1 more source