Results 141 to 150 of about 455,668 (258)

A new occurrence of tetrapod footprints from the Late Triassic of the Candelária Sequence, Brazil

The Anatomical Record, EarlyView.
Abstract The Hyperodapedon Assemblage Zone of the Candelária Sequence (Santa Maria Supersequence, Paraná Basin) preserves one of the most significant Late Triassic continental vertebrate assemblages in southern Brazil. Despite the relatively well‐documented body fossil record from this interval, ichnological records remain comparatively scarce.
Murilo Andrade‐Silva, Heitor Francischini   +1 more
wiley   +1 more source

Depressed chemical weathering inhibited climate stabilization after the end-Permian biocrisis. [PDF]

Sci Adv
Wei GY, Zhang F, Zhang H, Lin YB, Yin YS, Gorgij MN, Arefifard S, Algeo TJ, Pogge von Strandmann PAE, Mills BJW, Shen SZ.   +10 more
europepmc   +1 more source

The “costly son” hypothesis: Sons exacerbate obstetrical dilemmas in humans and other mammals

The Anatomical Record, EarlyView.
Abstract Human childbirth has often been considered uniquely difficult among mammals, yet recent evidence suggests that obstructed labor and fetopelvic disproportion are widespread across placental mammals. Here, we propose the “costly son” hypothesis: because male offspring are typically larger at birth, they impose greater obstetric risk on mothers ...
Nicole D. S. Grunstra, Jonathan C. K. Wells   +1 more
wiley   +1 more source

Paleogeographic controls on Phanerozoic weathering rates and implications for climate regulation. [PDF]

Nat Commun
Graham RJ, Cael BB, Fu M, Abbot DS.
europepmc   +1 more source

Investigación en enfermedades infecciosas

, 2018
IX Encuentro Científico Continental, organizado por la Universidad Continental. Se llevó a cabo los días miércoles 28 y jueves 29 de noviembre del 2018 en el Campus de la Universidad Continental, Huancayo, Perú.Datos estadísticos y comparativos sobre ...
Montalvo Otivo, Raúl
core  

Tooth histotype and enameloid microstructure of Priohybodus arambourgi d'Erasmo, 1960 (Elasmobranchii: Hybodontiformes) from the Late Jurassic of northeastern Brazil

The Anatomical Record, EarlyView.
Abstract Sharks possess varied diets and different prey capture mechanisms. As a result, the group exhibits a significant diversity in dental morphology, also reflecting the internal structures of the teeth. Internal dental anatomy points to the existence of three histotypes in elasmobranch phylogeny: orthodont, osteodont, and pseudoosteodont ...
Kelly Roberta da Silva, Valéria Gallo, Estevan Eltink   +2 more
wiley   +1 more source

Fate of heat approaching the Filchner-Ronne Ice Shelf mediated by continental shelf eddies. [PDF]

Sci Adv
Stewart AL, Youngs MK, Prend CJ.
europepmc   +1 more source

Anatomy and variation in the paraphyletic Mosasaurus lemonnieri assemblage from the Craie phosphatée de ciply, Belgium

The Anatomical Record, EarlyView.
Abstract Nineteenth century excavations of the Ciply‐Malogne Phosphatic Chalk Formation in Hainaut, Belgium, yielded over 50 partial mosasaur skeletons, the majority of which were referred to the species Mosasaurus lemonnieri Dollo, 1889. In the years since, this taxon has experienced a complicated taxonomic history, and its exceptional hypodigm has ...
Henry S. Sharpe, Hallie P. Street‐Sampson, Takuya Konishi, Michael W. Caldwell   +3 more
wiley   +1 more source

Buried fragments reveal a "Greater Gondwana" supercontinent. [PDF]

Sci Adv
Wang T, Collins WJ, Wang C, Hou Z, Tong Y, Huang H, Ye J.   +6 more
europepmc   +1 more source

Osteohistological evidence for terrestrial adaptation and an extended growth period in mekosuchine crocodylians and its potential role in their extinction

The Anatomical Record, EarlyView.
Abstract The Australasian crocodylian fossil record is dominated by the extinct endemic clade Mekosuchinae, with known members spanning the Eocene‐to‐Holocene. This diverse clade exhibited high morphological disparity, from early members superficially similar to Crocodylus, to more terrestrial forms later in the clade's evolutionary history.
Devin K. Hoffman, Cecily S. C. Nicholl, Oliver Bradley, Sreya Magar, Marie Sofia Sebaratnam, Alexandra Houssaye, Ryan N. Felice, Adam M. Yates, Stephen F. Poropat, Philip D. Mannion   +9 more
wiley   +1 more source