Results 151 to 160 of about 42,623 (370)

A zoogeographic model for the evolution of diversity and endemism in Madagascar

open access: yesEcography, EarlyView.
The delineation of zoogeographic regions is essential for understanding the evolution of biodiversity. Madagascar, characterized by high levels of endemism and habitat diversity, presents unique challenges and opportunities for such studies. Traditional global zoogeographic classifications, largely based on vertebrates, may overlook finer‐scale ...
Gabriela P. Camacho   +3 more
wiley   +1 more source

They don't look different, but they're not the same: formal resemblance and interpretive disparity in the construction of temporal frequency distributions [PDF]

open access: yesarXiv, 2017
In archaeological and paleontological demographic temporal frequency analysis (dTFA), a handful of protocols for generating temporal frequency distributions (tfds) have emerged based on the aggregation not of single-point timestamps but instead of constituent temporal distributions, including probability summation, kernel density estimation, and human ...
arxiv  

Developmental traits and life strategy of redlichiid trilobites

open access: yesBiological Reviews, Volume 98, Issue 1, Page 63-80, February 2023., 2023
ABSTRACT The developmental mode of four redlichiid trilobites is summarized, based upon exceptionally well‐preserved, articulated specimens from Cambrian Series 2 (stages 3 and 4) strata in southwestern China and South Australia. These relatively complete developmental sequences indicate a balanced rate in segment increase and addition to the thorax ...
Tao Dai, Xingliang Zhang, Shanchi Peng
wiley   +1 more source

The early diversification of ray‐finned fishes (Actinopterygii): hypotheses, challenges and future prospects

open access: yesBiological Reviews, Volume 98, Issue 1, Page 284-315, February 2023., 2023
ABSTRACT Actinopterygii makes up half of living vertebrate diversity, and study of fossil members during their Palaeozoic rise to dominance has a long history of descriptive work. Although research interest into Palaeozoic actinopterygians has increased in recent years, broader patterns of diversity and diversity dynamics remain critically understudied.
Struan Henderson   +3 more
wiley   +1 more source

ONE OF PIONEERS OF MARINE GEOLOGICAL RESEARCHES IN UKRAINЕ (on the 90th anniversary of the birth of Boris Fedorovich Zernetsky)

open access: yesГеологія і корисні копалини Світового океану, 2019
The article contains material with bibliographic data about life, pedagogical, social and organiza tional activity and scientific research activities of the doctor of geological and mineralogical sciences B.F. Zernetskiy.
S.G. Polovka, S.N. Dovbysh
doaj   +1 more source

Ancient DNA from 120-Million-Year-Old Lycoptera Fossils Reveals Evolutionary Insights [PDF]

open access: yesarXiv
High quality ancient DNA (aDNA) is essential for molecular paleontology. Due to DNA degradation and contamination by environmental DNA (eDNA), current research is limited to fossils less than 1 million years old. The study successfully extracted DNA from Lycoptera davidi fossils from the Early Cretaceous period, dating 120 million years ago. Using high-
arxiv  

When phylogenetics met biogeography: Willi Hennig, Lars Brundin and the roots of phylogenetic and cladistic biogeography

open access: yesCladistics, Volume 39, Issue 1, Page 58-69, February 2023., 2023
Abstract Willi Hennig's (Beitr. Ent. 1960, 10, 15) Die Dipteren‐Fauna von Neuseeland als systematisches und tiergeographisches Problem applied a phylogenetic approach to examine the distributional patterns exhibited by the Diptera of New Zealand. Hennig showed how phylogenetic trees may be used to infer dispersal, based on the progression and deviation
Juan J. Morrone
wiley   +1 more source

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