Results 51 to 60 of about 809 (146)

Growing Up Tyrannosaurus Rex: Osteohistology Refutes the Pygmy Nanotyrannus and Supports Ontogenetic Niche Partitioning in Juvenile Tyrannosaurus [PDF]

open access: yes, 2020
Despite its iconic status as the king of dinosaurs, Tyrannosaurus rex biology is incompletely understood. Here, we examine femur and tibia bone microstructure from two half-grown T.
Horner, John R.   +5 more
core   +3 more sources

Tooth enamel microstructure of Revueltosaurus and Krzyzanowskisaurus (Reptilia: Archosauria) from the Upper Triassic Chinle Group, USA: Implications for function, growth, and phylogeny [PDF]

open access: yes, 2013
Tooth enamel microstructure can carry significant phylogenetic, ontogenetic, and functional information within amniotes. Here we provide the first descriptions of the tooth enamel microstructure of two Late Triassic taxa, the crurotarsan Revueltosaurus ...
Heckert, Andrew B.   +1 more
core   +1 more source

Basal abelisaurid and carcharodontosaurid theropods from the Lower Cretaceous Elrhaz Formation of Niger [PDF]

open access: yes, 2008
We report the discovery of basal abelisaurid and carcharodontosaurid theropods from the mid Cretaceous (Aptian–Albian, ca. 112 Ma) Elrhaz Formation of the Niger Republic. The abelisaurid, Kryptops palaios gen. et sp.
Brusatte, S.L., Sereno, P.C.
core   +1 more source

A new tyrannosaurine specimen (Theropoda: Tyrannosauroidea) with insect borings from the Upper Cretaceous Honglishan Formation of Northwestern China [PDF]

open access: yes, 2016
A large theropod ilium was recently collected from the Upper Cretaceous Honglishan Formation in the Sangequan area of the northern Junggar Basin, Xinjiang, China, which represents the first officially reported dinosaur fossil from this formation. Several
Bi, Shundong   +4 more
core   +1 more source

Further material of the ceratosaurian dinosaur Syntarsus from the Elliot Formation (Early Jurassic) of South Africa [PDF]

open access: yes, 1999
Two further fossils recovered from the Elliot Formation in South Africa are referred to the ceratosaurian genus Syntarsus: a partial pelvis and a well preserved and articulated snout.
Munyikwa, Darlington
core  

Visualising muscle anatomy using three-dimensional computer models - an example using the head and neck muscles of Sphenodon [PDF]

open access: yes, 2009
We demonstrate how the computer-based technique of multi-body dynamics analysis (MDA) can be used to create schematic, but informative three-dimensional (3D) representations of complex muscle anatomy.
Curtis, N   +4 more
core  

Combined Ca, Sr isotope and trace element analyses of Late Cretaceous dinosaur teeth: assessing diet versus diagenesis [PDF]

open access: yes
peer reviewedThe Sr and Ca isotope composition, along with trace element content in fossil teeth, provides valuable insights into biogenic and diagenetic processes.
Cipriani, Anna   +9 more
core   +2 more sources

Reassessment of the enigmatic Late Cretaceous theropod dinosaur, Bagaraatan ostromi [PDF]

open access: yes
The Late Cretaceous Bagaraatan ostromi, described by Osmólska in 1996, is one of the most enigmatic theropod dinosaurs. The holotype possesses a peculiar combination of features, which Osmólska suggested were indicative of a primitive position among ...
Brusatte, Steve   +2 more
core   +2 more sources

New theropod dinosaur teeth from the Middle Jurassic of the Isle of Skye, Scotland [PDF]

open access: yes, 2019
Appendix 3:Datasets of theropod crown measurements used in the discriminant analysis and result of the discriminant analysis. The Excel sheet includes an updated version of Hendrickx et al.'s (2015) dataset as well as Smith and Lamanna's (2006) and Gerke
Averianov   +57 more
core   +5 more sources

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