Novel Quantification of Eggshell Surfaces in <i>Dromaius novaehollandiae</i> With Implications for the Fossil Eggshells of Oviraptorosauria (Dinosauria). [PDF]
Ecol EvolWe have developed a new, quantitative method of assessing the variation on paleosurfaces. This method uses functions from the molaR package of R, including new functions detailed here. This paper tests the functions on the eggshell surfaces of extant emu (Dromaius novaehollandiae) and fossil oviraptorosaur eggs of the ootaxon Macroelongatoolithus ...
Hedge J, Bender E, Zanno LE.
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Cranial anatomy of Anchiornis huxleyi (Theropoda: Paraves) sheds new light on bird skull evolution [PDF]
古脊椎动物学报 (中英文版)The origin of birds from theropod dinosaurs, by any measures, is the most eye-catching evolutionary transition in the history of life, which encompasses numerous extensive morphological and biological changes. Compared to postcranium, little progress has
WANG Min, WANG Xiao-Li, ZHENG Xiao-Ting, ZHOU Zhong-He
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Rhetoric Vs. Reality: A Commentary an "Bird Origins Anew" by A. Feduccia [PDF]
, 2015 Birds are maniraptoran theropod dinosaurs. The evidence supporting the systematic position of Avialae as a derived clade within Dinosauria is voluminous and derived from multiple independent lines of evidence. In contrast, a paucity of selectively chosen
Chiappe, Luis M. +11 more
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Archaeopteryx, paravian phylogenetic analyses, and the use of probability-based methods for palaeontological datasets [PDF]
, 2013 Archaeopteryx, which has often been considered the earliest avialan, is an iconic species, central to our understanding of bird origins. However, a recent parsimony-based phylogenetic study shifted its position from within Avialae, the group that ...
Xu, X., Pol, Diego
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Baraminological Analysis of Jurassic and Cretaceous Avialae [PDF]
, 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
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A remarkable sample of bird teeth from the palaeo-Arctic Prince Creek Formation of northern Alaska elucidates Late Cretaceous avialan richnessA remarkable sample of bird teeth from the palaeo-arctic Prince Creek Formation of northern Alaska elucidates Late Cretaceous avialan richness [PDF]
Royal Society Open ScienceUnderstanding the taxonomic affinity of putative avialan teeth is essential to assessing the geographic range and richness of Late Cretaceous toothed birds.
Lauren N. Wilson +7 more
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Morphological disparity in theropod jaws: comparing discrete characters and geometric morphometrics
Palaeontology, Volume 63, Issue 2, Page 283-299, March 2020., 2020 Abstract Disparity, the diversity of form and function of organisms, can be assessed from cladistic or phenetic characters, and from discrete characters or continuous characters such as landmarks, outlines, or ratios. But do these different methods of assessing disparity provide comparable results?
Joep Schaeffer +4 more
wiley +1 more source
eLifeEnantiornithines were the dominant birds of the Mesozoic, but understanding of their diet is still tenuous. We introduce new data on the enantiornithine family Bohaiornithidae, famous for their large size and powerfully built teeth and claws.
Case Vincent Miller +4 more
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, 2004 Fig. 8. Total ulnar length (in millimeters) compared for the only complete YPM Ichthyornis dispar ulnae (YPM 1450, YPM 1453, YPM 1740).Published as part of CLARKE, JULIA A., 2004, Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And ...
CLARKE, JULIA A.
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From Highways to Biological Collections: Plastination of Wild Animals Victims of Roadkill in the Sooretama Biological Reserve, Brazil [PDF]
Brazilian Archives of Biology and TechnologyRoadkill is one of the most direct impacts on fauna, leading to numerous direct and indirect impacts. Road-killed animals could serve as a resource for research and teaching purposes, but first, they need to have their tissues preserved by some technique.
Marcos Vinícius Freitas Silva +8 more
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