Results 121 to 130 of about 3,973,961 (338)

Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)

The Anatomical Record, EarlyView.
Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto, João Felipe Leal Kaiuca, Adriana Itatí Olivares, William Corrêa Tavares   +3 more
wiley   +1 more source

Closure to “Discussions of ‘Contact Conformity Effects on Spinning Torque and Friction’” (1969, ASME J. Lubr. Technol., 91, pp. 584–586) [PDF]

, 1969
M. Dietrich, R. J. Parker, E. V. Zaretsky, W. J. Anderson   +3 more
openalex   +1 more source

An ontological morphological phylogenetic framework for living and extinct ray‐finned fishes (Actinopterygii)

The Anatomical Record, EarlyView.
Abstract The ray‐finned fishes include one out of every two species of living vertebrates on Earth and have an abundant fossil record stretching 380 million years into the past. The division of systematic knowledge of ray‐finned fishes between paleontologists working on extinct animals and neontologists studying extant species has obscured the ...
Jack Stack
wiley   +1 more source

Excavation diaries and field notes (periegesis) (1969-1972)

Analele Banatului. Arheologie-Istorie, 2020
The paper renders the content of two notebooks (texts – handwritten or sometimes dictated and sketches drawn by Florin Medeleţ). These excavation diaries cover the period between 1969 and 1972 and refer to both test trenches and field researches.
Florin Medelet
doaj  

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

The Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza, Marina Bento Soares, Luiz Carlos Weinschütz, Alexander Wilhelm Armin Kellner   +3 more
wiley   +1 more source

The Cowl - v.31 - n.14 - Mar 06, 1969 [PDF]

, 1969
The Cowl - student newspaper of Providence College. Volume 31, Number 14 - March 6, 1969.

core   +1 more source

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

The Cowl - v.31 - n.16 - Mar 27, 1969 [PDF]

, 1969
The Cowl - student newspaper of Providence College. Volume 31, Number 16 - March 27, 1969.

core   +1 more source

A second species of non‐crocodyliform crocodylomorph from the Late Triassic fissure deposits of southwestern UK: Implications for locomotory ecological diversity in Saltoposuchidae

The Anatomical Record, EarlyView.
Abstract The Late Triassic–Early Jurassic fissures of the Bristol Channel area (southwest England and south Wales) are renowned for their diverse vertebrate faunas. These assemblages have yielded an array of predominantly small‐bodied forms that are crucial to our understanding of the early evolution of several major tetrapod clades.
Ewan H. Bodenham, Stephan N. F. Spiekman, Susannah C. R. Maidment, Paul Upchurch, Philip D. Mannion   +4 more
wiley   +1 more source

VELA V AND VI SOLAR X-RAY ATLAS. II. SEPTEMBER 1, 1969--JANUARY 1, 1970.

, 1970
N Blocker, P.E. Fehlau, W.E. Kunz, William H. Chambers, J Fuller, R. W. Milkey   +5 more
openalex   +2 more sources