نتایج جستجو برای: cladistic analyses

تعداد نتایج: 385811  

Journal: :Journal of human evolution 2009
Stephen J Lycett Mark Collard William C McGrew

Long-term field studies have revealed considerable behavioural differences among groups of wild Pan troglodytes. Here, we report three sets of cladistic analyses that were designed to shed light on issues relating to this interpopulation variation that are of particular relevance to palaeoanthropology. In the first set of analyses, we focused on the proximate cause of the variation. Some resear...

2002
WILLIAM E. STEIN

Stein Jr., W.E., 1987. Phylogenetic analysis and fossil plants. Rev. Palaeobot. Palynol., 50:31 61. This paper presents a perspective on the relat ionship between cladistic methods and the study of fossil plants. Paleobotany has been slow in evaluat ing the potent ial of these and other explicit methods compared to other branches of systematics. However, the unique or part icular ly difficult p...

Journal: :South African Journal of Science 2017

Journal: :Journal of Vertebrate Paleontology 2021

Trilophosauridae are an extinct group of archosauromorphs from the Upper Triassic western North America and Nova Scotia. Possible trilophosaurids Tricuspisaurus thomasi Variodens inopinatus have also been reported fissure fills in southwest United Kingdom, based on their multi-cuspid dentitions. Here, we provide updated description V. add to T. thomasi, including re-examining CT scans its holot...

2016
Michael J Wise

Biologists regularly create phylogenetic trees to better understand the evolutionary origins of their species of interest, and often use genomes as their data source. However, as more and more incomplete genomes are published, in many cases it may not be possible to compute genome-based phylogenetic trees due to large gaps in the assembled sequences. In addition, comparison of complete genomes ...

Journal: :Journal of Biogeography 2023

Abstract Biogeographical transition zones are areas of overlap, replacement or partial segregation between different biotas, which sets taxa sharing similar geographical distributions as a result common evolutionary history and ecological affinities. Transition occur in few particular the world where historically contingent processes have allowed biotic elements to coexist interact. Evolutionar...

2005
PHILIP D. GINGERICH

Our understanding of primate evolution is ultimately based on patterns of phyletic relationship and morphological change documented in the fossil record. Stratophenetic interpretation of living and fossil primates yields an objective alternative to the arbitrary scala naturae assumed implicitly in traditional comparative biology. Fossils provide an outline of primate history constraining compar...

2008
Daniel Wescott

The status of Miocene ramamorphs has been the cause of continuous debate sine the early 19OOs. Both cladistic and molecular data has been applied to answer some of the questions that arise. However, both approaches present problems. A discussion of taxonomic nomenclature, cladistic and molecular data pertaining to middle to late Miocene ramamorphs, and six possible phyletic affinities are prese...

2004
Kurt M. Pickett James M. Carpenter Ward C. Wheeler

A review of previously published cladistic analyses of Polistes is presented. The two most recent analyses of Polistes are shown to be largely consistent phylogenetically. Although the taxonomy implied by each differs, this difference is shown to be mostly due to taxon sampling. After the review, a phylogenetic analysis of Polistes — the most data-rich yet undertaken — is presented. The analysi...

Journal: :Journal of Biogeography 2005

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