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The Placental Mammal Ancestor and the Post–K-Pg Radiation of Placentals
A phylogenetic tree shows that crown clade Placentalia and placental orders originated after the K-Pg boundary, but phenomic signals overturn molecular signals to show Sundatheria (Dermoptera + Scandentia) as the sister taxon of Primates, a close link between Proboscidea and Sirenia (sea cows), and the monophyly of echolocating Chiroptera (bats).
Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change
- J. Clarke, D. Ksepka, Clint A. Boyd
- BiologyProceedings of the National Academy of Sciences
- 10 July 2007
The most comprehensive phylogenetic analysis of Sphenisciformes to date, combining morphological and molecular data, places the new species outside the extant penguin radiation (crown clade: Speniscidae) and supports two separate dispersals to equatorial regions during greenhouse earth conditions.
Trophic structure in a large assemblage of phyllostomid bats in Panama
It is shown that the trophic structure of the local contemporary assemblage of phyllostomids is largely conservative with respect to traceable ancestral habits, strongly suggesting that overall trophics structure was likely determined historically.
Bat Systematics in the Light of Unconstrained Analyses of a Comprehensive Molecular Supermatrix
- L. I. Amador, R. Leticia Moyers Arévalo, F. C. Almeida, S. Catalano, N. Giannini
- BiologyJournal of Mammalian Evolution
- 1 March 2018
A large-scale phylogeny of bats based on unconstrained searches for a data matrix of 804 non-chimeric, taxonomically updated bat terminals yielded a highly resolved, variously supported phylogeny that recovered the majority of currently recognized clades at all levels of the chiropteran tree.
POSTWEANING ONTOGENY OF THE SKULL OF DIDELPHIS ALBIVENTRIS
Most of the postweaning developments of the skull of Didelphis albiventris is interpreted as a function of the shift from milk suckling to active mastication.
Chiniquodontid cynodonts: systematic and morphometric considerations
Allometric analysis of chiniquodontids sensu stricto reveals that all specimens can be confidently arranged in a single growth series, irrespective of their original species assignments; and most of the measurements change isometrically with respect to skull length.
Canonical phylogenetic ordination.
- N. Giannini
- BiologySystematic biology
- 1 October 2003
Results showed that the new technique detected previously overlooked variation clearly associated with phylogeny and that many phylogenetic effects on comparative data may occur at particular groups rather than across the entire tree.
Phylogenetic morphometrics (I): the use of landmark data in a phylogenetic framework
- S. Catalano, P. Goloboff, N. Giannini
- BiologyCladistics : the international journal of the…
- 1 October 2010
A method for the direct use of aligned landmark data (2D or 3D coordinates of comparable points) in phylogenetic analysis is described. The approach is based on finding, for each of the landmark…
GOMPHODONT CYNODONTS OF THE CHAÑARES FORMATION: THE ANALYSIS OF AN ONTOGENETIC SEQUENCE
Consideration of qualitative characters together with the allometric results lead to the conclusion that all forms belong to a single species in a growth series, and Massetognathus pascuali is recognized as the only valid entity.
On the Cranial Osteology of Chiroptera. I. Pteropus (Megachiroptera: Pteropodidae)
A descriptive and nomenclatorial benchmark for chiropteran skull anatomy is established in line with similar works in other mammalian orders, with the aim of creating common ground for comparative, phylogenetic, and functional studies of the bat skull, including comparisons with other mammals.