Results 21 to 30 of about 95 (85)

A new specimen of Microraptor (Theropoda, Dromaeosauridae) from the Lower Cretaceous of western Liaoning, China. (American Museum novitates, no. 3821)

open access: yes, 2014
28 pages : illustrations (chiefly color) ; 26 cm.Microraptor zhaoianus is known from several specimens collected in western Liaoning Province, China.
Norell, Mark.   +11 more
core   +1 more source

A diminutive deinonychosaur (Dinosauria:Theropoda) from the Early Cretaceous of Oosh (Ovorkhangai, Mongolia)

open access: yes, 2012
We describe a new specimen of small maniraptoran theropod from the Early Cretaceous Oosh locality, Ovorkhangai province, central Mongolia. This exemplar ISMD-VP09 preserves a maxillary fragment, two teeth and partial appendicular elements.
Prieto-Marquez, Albert   +5 more
core   +1 more source

Origin and early evolution of Aves: dinosaurs, ancient birds, and mtDNA sequences

open access: yes, 1992
Recently a general cladistic framework for early avian evolution has emerged. Postcranial modifications in the wrist joint and elsewhere firmly establish birds as a diversified subgroup of maniraptoran theropods.
Paul C. Sereno
core   +1 more source

A Jurassic avialan dinosaur from China resolves the early phylogenetic history of birds

open access: yes, 2013
The recent discovery of small paravian theropod dinosaurs with well-preserved feathers in the Middle–Late Jurassic Tiaojishan Formation of Liaoning Province (northeastern China) has challenged the pivotal position of Archaeopteryx regarded from its ...
Escuillie, F.   +17 more
core   +1 more source

Baraminological Analysis of Jurassic and Cretaceous Avialae

open access: yes, 2020
The baraminic status of Jurassic and Cretaceous Avialae was evaluated using statistical baraminology. Baraminic distance correlation (BDC) and three dimensional multidimensional scaling (MDS) was applied to six previously published character matrices ...
Garner, Paul A.   +2 more
core  

Phylogenetic relationships of Unenlagiidae theropods: are they members of Dromaeosauridae? [PDF]

open access: yes, 2010
Paraves is the theropod clade that includes Aves and their close relatives, the deinonychosaurians. The fossil record of basal paravians (currently ranging from Late Jurassic to Late Cretaceous) was mostly restricted to the Northern Hemisphere, but ...
Agnolín, Federico Lisandro   +1 more
core  

Fig. 3 in A new Jurassic scansoriopterygid and the loss of membranous wings in theropod dinosaurs

open access: yes, 2019
Fig. 3 | Phylogeny and phylomorphospace of Mesozoic coelurosaurians. a, Simplified phylogeny showing the position of Ambopteryx (see Extended Data Fig. 7 for complete results, and full names for age and stage abbreviations). Myr, million years.
O'Connor, Jingmai K.   +3 more
core   +1 more source

Synapomorphies of Deinonychosauria and its sub-clades that are confirmed to be present in Yurgovuchia doellingi.

open access: yes, 2012
Character and state numbers are as given in Appendix S1. Unless otherwise mentioned, in each case the state is a synapomorphy of the clade under both accelerated and delayed transformation. ACCTRAN = accelerated transformation.
Natalie Toth (164443)   +4 more
core   +1 more source

Linking the evolution of body shape and locomotor biomechanics in bird-line archosaurs

open access: yes, 2013
Locomotion in living birds (Neornithes) has two remarkable features: feather-assisted flight, and the use of unusually crouched hindlimbs for bipedal support and movement.
Liverpool   +14 more
core   +1 more source

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