Results 251 to 260 of about 1,253,859 (341)

Endosymbiotic ratchet accelerates divergence after organelle origin

open access: yesBioEssays, Volume 45, Issue 1, January 2023., 2023
Primary endosymbiosis gave rise to mitochondria and plastids. The proximate impacts of organelle origin on lineage evolution have not been addressed at the population level. Using data from the photosynthetic amoeba Paulinella, we hypothesize that primary endosymbiosis accelerates lineage divergence, a process we refer to as the endosymbiotic ratchet ...
Debashish Bhattacharya   +3 more
wiley   +1 more source

The PteridoPortal: A publicly accessible collection of over three million records of extant and extinct pteridophytes

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Pteridophytes—vascular land plants that disperse by spores—are a powerful system for studying plant evolution, particularly with respect to the impact of abiotic factors on evolutionary trajectories through deep time. However, our ability to use pteridophytes to investigate such questions—or to capitalize on the ecological and ...
Carl J. Rothfels   +67 more
wiley   +1 more source

The Molecular Taxonomy of Primary Prostate Cancer

open access: yesCell, 2015
Adam Abeshouse   +309 more
semanticscholar   +1 more source

EXPERIMENTAL TAXONOMY [PDF]

open access: bronze, 1936
J. W. GREGOR, V. McM. Davey, Jianan Lang
openalex   +1 more source

A new Crocodyloidea from the middle Eocene of Zamora (Duero Basin, Spain)

open access: yesThe Anatomical Record, EarlyView.
Abstract The eusuchian crocodyliforms recorded in the Eocene levels of the Spanish Duero Basin belong to three lineages: Planocraniidae, with the species Duerosuchus piscator; Alligatoroidea, represented by several specimens of the genus Diplocynodon; and Crocodyloidea, which includes several specimens traditionally attributed to Asiatosuchus.
Iván Narváez   +5 more
wiley   +1 more source

Postcranial anomalies of Eocene freshwater pleurodiran and cryptodiran turtles from the Spanish Duero Basin

open access: yesThe Anatomical Record, EarlyView.
Abstract Testudines are one of the best‐represented taxonomic groups among the Paleogene taxa of the Duero Basin (Castile and Leon Autonomous Community, central Spain). Among them, Neochelys (Podocnemidide) and Allaeochelys (Carettochelyidae) are most abundant, allowing the population to be assessed for osteological anomalies.
Andrea Guerrero   +3 more
wiley   +1 more source

Morphological diversity of saber‐tooth upper canines and its functional implications

open access: yesThe 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

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