Results 151 to 160 of about 408,792 (381)
Morphological diversity of saber‐tooth upper canines and its functional implications
The Anatomical Record, EarlyView.Abstract Elongated upper canine teeth, commonly known as saber‐teeth, have evolved three times within the sub‐order Feliformia. The species that wielded them flourished throughout the Cenozoic and have historically been separated into two morphological groups: the dirk‐tooths with longer, flatter canines, and the scimitar‐tooths with shorter, serrated ...
Caitlin D. Shelbourne +1 more
wiley +1 more source
Novel Versus Unsupported Clades: Assessing the Qualitative Support for Clades in MRP Supertrees [PDF]
Systematic Biology, 2003 Matrix representation with parsimony (MRP) supertree construction has been criticized because the supertree may specify clades that are contradicted by every source tree contributing to it. Such unsupported clades may also occur using other supertree methods; however, their incidence is largely unknown.
openaire +3 more sources
On the Interpretation of Bootstrap Trees: Appropriate Threshold of Clade Selection and Induced Gain [PDF]
, 1996 Vincent Berry, Olivier Gascuel
openalex +1 more source
Hypercanines: Not just for sabertooths
The Anatomical Record, EarlyView.Abstract Hypercanines are here defined as hypertrophied caniniform teeth, that is, canine teeth that are elongated to serve specific functions in different clades of mammals and their synapsid ancestors. This article presents an overview of the occurrence of hypercanines, their growth, and their function across a broad range of clades.
Lars Werdelin
wiley +1 more source
More DNA support for a Cetacea/Hippopotamidae clade: the blood-clotting protein gene gamma-fibrinogen [PDF]
, 1997 John Gatesy
openalex +1 more source
, 2015 Phytophthora Clade 5 is a very poorly studied group of species of oomycete chromists, consisting of only two known species P. castaneae (≡ P. katsurae, nom. illegit .) and P. heveae with most isolates from East Asia and the Pacific Islands.
Bevan Simon Weir +6 more
semanticscholar +1 more source
Functional morphology of the pharyngeal teeth of the ocean sunfish, Mola mola
The Anatomical Record, EarlyView.Abstract Many fish use a set of pharyngeal jaws in their throat to aid in prey capture and processing, particularly of large or complex prey. In this study—combining dissection, CT scanning, histology, and performance testing—we demonstrate a novel use of pharyngeal teeth in the ocean sunfish (Mola mola), a species for which pharyngeal jaw anatomy had ...
Benjamin Flaum +3 more
wiley +1 more source
Cytogenetics of Legumes in the Phaseoloid Clade
The Plant Genome, 2013 Cytogenetics played an essential role in studies of chromosome structure, behavior, and evolution in numerous plant species. The advent of molecular cytogenetics combined with recent development of genomic resources has ushered in a new era of chromosome studies that have greatly advanced our knowledge of karyotypic diversity, genome and chromosome ...
Scott A. Jackson +2 more
openaire +3 more sources
Microbiology SpectrumClostridioides difficile (C. difficile) is widely distributed in the intestinal tract of humans, animals, and in the environment. It is the most common cause of diarrhea associated with the use of antimicrobials in humans and among the most common ...
D. Meléndez-Sánchez +6 more
doaj +1 more source