Results 61 to 70 of about 6,388 (229)

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, Christian Cooper, Jingmai O'Connor   +2 more
wiley   +1 more source

On the findings of dinosaurs in the Crimea

Известия высших учебных заведений: Геология и разведка, 2019
Ornithopod dinosaur Riabininohadros weberae from the Upper Cretaceous (upper Maastrichtian) of the Crimean Peninsula (Besh-Kosh) shows a set of primitive characters of hind limbs observed in iguanodontids and basal ornithischians and is referred to as ...
A. V. Lopatin, A. О. Averianov
doaj   +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, Takanobu Tsuihiji, Hiroki Ishikawa, Noriyuki Wakimizu, Soichiro Kawabe, Kodai Sakane   +5 more
wiley   +1 more source

The last dinosaurs of Brazil: The Bauru Group and its implications for the end-Cretaceous mass extinction

Anais da Academia Brasileira de Ciências
The non-avian dinosaurs died out at the end of the Cretaceous, ~66 million years ago, after an asteroid impact. The prevailing hypothesis is that the effects of the impact suddenly killed the dinosaurs, but the poor fossil record of latest Cretaceous ...
STEPHEN L. BRUSATTE, CARLOS R.A. CANDEIRO, FELIPE M. SIMBRAS   +2 more
doaj   +1 more source

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

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, James Gregory, Christopher Jackson, Jordan Bestwick, Katlin Schroeder, Samuel J.L. Gascoigne, Paul Bills, Laura B. Porro, Philip D. Mannion, Paul M. Barrett   +9 more
wiley   +1 more source

Permineralización en restos de dinosaurios preservados en depósitos de desbordamiento de la Formación Bajo Barreal (Cretácico Superior), Patagonia central, Argentina.

Revista Mexicana de Ciencias Geológicas, 2017
The fossil deposit Cañadón Las Horquetas, placed in the centre-south of the Chubut Province, includes the Bajo Barreal Formation of early Cenomanian – late Turonian age. This site presents the greater abundance and diversity of fossil vertebrates in the
Gabriel A. Casal, Adriana M. Nillni, Mauro N. Valle, Ezequiel González Svoboda, Celina Tiedemann   +4 more
doaj   +1 more source

Widespread distribution of large silesaurids evidenced by a new record from the Middle Triassic of southwest Gondwana

The Anatomical Record, EarlyView.
The largest silesaurid known from South America is described here, demonstrating that silesaurids reached large body sizes in southwestern Gondwana. This discovery further underscores the widespread geographic distribution and temporal persistence of large silesaurids across Pangea, despite faunal turnovers and environmental events such as the Carnian ...
Rodrigo Temp Müller
wiley   +1 more source

Conversational Topic Shifts and Topic Maintenance in Autistic and Neurotypical Children

Autism Research, EarlyView.
ABSTRACT Topic maintenance and topic shifts are crucial components of conversation; however, existing research lacks a clear quantitative operationalization of these topic management skills. Previous studies suggest that autistic children are less likely than their neurotypical peers to maintain and elaborate on the interlocutor's prior topic, and that
Zuriñe Ábalos, Mikhail Kissine, Agustín Vicente, Elena Castroviejo   +3 more
wiley   +1 more source

Vocabulary of Autistic Preschool Children With Limited Language: Alignment With Early Word Inventories

Autism Research, EarlyView.
ABSTRACT There is a critical need to understand the early vocabulary of young children with autism who have limited language, defined in this study as producing fewer than 20 different spontaneous and functional spoken or augmented words, to better inform educational targets and vocabulary selection for spoken as well as augmentative and alternative ...
Eunji Kong, Yitong Jiang, Marina Crain, Wenjing Bao, Lynne Levato, Wendy Shih, Connie Kasari, Stephanie Shire   +7 more
wiley   +1 more source

Enigmacursor mollyborthwickae, a neornithischian dinosaur from the Upper Jurassic Morrison Formation of the western USA

Royal Society Open Science
Although their remains have been known since the 1870s, the small, bipedal ornithischian dinosaurs from the Upper Jurassic Morrison Formation of the western USA remain poorly known. The historic type specimens are incomplete and poorly preserved and have
Susannah C. R. Maidment, Paul M. Barrett
doaj   +1 more source