Results 61 to 70 of about 540 (131)

Patterns of variation in fleshy diaspore size and abundance from Late Triassic–Oligocene

Biological Reviews, Volume 99, Issue 2, Page 430-457, April 2024.
ABSTRACT Vertebrate‐mediated seed dispersal is a common attribute of many living plants, and variation in the size and abundance of fleshy diaspores is influenced by regional climate and by the nature of vertebrate seed dispersers among present‐day floras.
Duhita Naware, Roger Benson
wiley   +1 more source

Reconstruction of the pelvic girdle and hindlimb musculature of the early tetanurans Piatnitzkysauridae (Theropoda, Megalosauroidea)

Journal of Anatomy, Volume 244, Issue 4, Page 557-593, April 2024.
Piatnitzkysauridae were Jurassic theropods that represented one of the earliest lineages to have evolved moderate body size. Here, we reconstructed the hindlimb musculature of this clade, allowing a more complete understanding of myological evolution in theropod pelvic appendages. Abstract Piatnitzkysauridae were Jurassic theropods that represented the
Mauro B. S. Lacerda, Jonathas S. Bittencourt, John R. Hutchinson   +2 more
wiley   +1 more source

The Origin of the Modern Bird Skull, with a Focus on the Evolution and Embryonic Development of Musculoskeletal Structures in the Temporal and Otic Regions [PDF]

, 2022
Compared with their Mesozoic theropod ancestors, extant birds (Aves) exhibit extensively modified skulls and associated soft tissue, with massively enlarged brains and reduced temporal musculature, an inner ear with dorsally elongated semicircular canals,
Hanson, Michael
core  

Evolution of antero-posterior patterning of the limb: insights from the chick [PDF]

, 2017
The developing limbs of chicken embryos have served as pioneering models for understanding pattern formation for over a century. The ease with which chick wing and leg buds can be experimentally manipulated, while the embryo is still in the egg, has ...
Towers, M.
core   +1 more source

Enlargement of sternum traits facilitated the evolution of powered flight in birds [PDF]

An enlarged sternum with a prominent keel is a central feature of the flight apparatus of modern birds. However, sterna of near-bird dinosaurs (Pennaraptora) and early avialans are either substantially different from those of living birds or absent ...
Benson, Roger, Claramunt, Santiago, Evans, David C, Hu, Han, Lowi-Merri, Talia M, O'Connor, Jingmai   +5 more
core   +2 more sources

The Impact of Unstable Taxa in Coelurosaurian Phylogeny and Resampling Support Measures for Parsimony Analyses [PDF]

, 2020
Paleontological datasets often have large amounts of missing entries that result in multiple mostparsimonious trees. Highly incomplete and conflictive taxa produce a collapsed strict consensus andseveral methods have been developed for identifying these ...
Goloboff, Pablo Augusto, Pol, Diego
core