Results 181 to 190 of about 378,820 (312)

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

A single-point mutation in TRPA1 drives heat resilience in oviparous embryos. [PDF]

Sci Adv
Feng TY, Dong W, Zheng D, Han L, Cheng J, Wu X, Lu X, Yang S, Du WG.   +8 more
europepmc   +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, Christian Cooper, Jingmai O'Connor   +2 more
wiley   +1 more source

Strategic Growth in Social Vertebrates

Recent evidence suggests that social vertebrates can modify their growth and size in an adaptive fashion in response to fine-grain changes in social conditions. In this talk, I will review experimental evidence for strategic growth in social vertebrates,
Buston, Peter
core  

Evolutionary study of oncogenes and tumor suppressor genes in breast carcinoma. [PDF]

J Taibah Univ Med Sci
Nazir A, Ambreen S, Nawaz Y.
europepmc   +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 VERTEBRATE EYE [PDF]

British Journal of Ophthalmology, 1943
openaire   +2 more sources

Two Paralogues as They Like It: Conserved and Divergent Evolution of Vertebrate Gcm Genes. [PDF]

Evol Dev
Shono T, Tatsumi N, Miyake T, Kuraku S, Okabe M.   +4 more
europepmc   +1 more source

Understanding the spacing of placodes in the eye: A comparative study across age and species

The Anatomical Record, EarlyView.
Abstract The conjunctival placodes of the avian eye form in an intriguing and conserved sequence in a circular annulus around the cornea. These 13–16 placodes develop into papillae that are essential for inducing underlying intramembranous flat bones, known as scleral ossicles, which form an important part of the ocular skeleton.
Florence Joseph, Tamara A. Franz‐Odendaal   +1 more
wiley   +1 more source

Introduction : Forty years of Early Vertebrates: papers from the 11th International Symposium on Early and Lower Vertebrates

, 2009
Boisvert, Catherine,, Ahlberg, Per E.,, Blom, Henning,   +2 more
core   +1 more source