Results 21 to 30 of about 461 (179)

Did the climate changes cause the extinction of the Late Pleistocene gomphotheres in South America? [PDF]

open access: yesZoologia (Curitiba)
A global wave of megafauna extinctions occurred between 50,000 and 10,000 years ago, impacting numerous large continental mammals that are crucial to ecosystem dynamics.
Evelyn N.S. Cruz   +2 more
doaj   +1 more source

Diachroneity Rules the Mid-Latitudes: A Test Case Using Late Neogene Planktic Foraminifera across the Western Pacific

open access: yesGeosciences, 2022
Planktic foraminifera are commonly used for first-order age control in deep-sea sediments from low-latitude regions based on a robust tropical–subtropical zonation scheme.
Adriane R. Lam   +4 more
doaj   +1 more source

Nummulitids, lepidocyclinids and Sr-isotope data from the Oligocene of Kutch (western India) with chronostratigraphic and paleobiogeographic evaluations

open access: yesGeodinamica Acta, 2018
Due to its intermediate geographical position between the Mediterranean and W Pacific, the Oligocene shallow-marine sequence of Kutch (India) is of key importance in paleobiogeographical interpretations.
György Less   +5 more
doaj   +1 more source

Bartonian orthophragminids from the Fulra Limestone (Kutch, W India) and coeval units in Sulaiman Range, Pakistan: a synthesis of shallow benthic zone (SBZ) 17 for the Indian Subcontinent

open access: yesGeodinamica Acta, 2018
Orthophragminids from the Bartonian Fulra Limestone in Kutch, India and the coeval units in Sulaiman Range in Pakistan suggest the establishment of a significant number of endemic species in the Indian subcontinent (Eastern Tethys).
Ercan Özcan   +4 more
doaj   +1 more source

The Eocene South American metatherian Zeusdelphys complicatus is not a protodidelphidid but a hatcheriform: Paleobiogeographic implications [PDF]

open access: yesActa Palaeontologica Polonica, 2017
Zeusdelphys complicatus is one of the most enigmatic metatherians from the Itaboraí Basin. The type and only known specimen was previously regarded as the upper dentition of Eobrasilia; an M4 of a new taxon; an M3 of a Kollpaniidae (now regarded as a ...
Leonardo M. Carneiro   +1 more
doaj   +1 more source

The Diversity of South American Equus: Did Size Really Matter?

open access: yesFrontiers in Ecology and Evolution, 2019
The extant horse genus Equus originated in North America, probably during the late Miocene/early Pliocene, and its entrance into South America was possibly related to one of the last four stages of the Great American Biotic Interchange.
Helena Machado   +2 more
doaj   +1 more source

Demise of the Planktic Foraminifer Genus Morozovella During the Early Eocene Climatic Optimum: New Records from ODP Site 1258 (Demerara Rise, Western Equatorial Atlantic) and Site 1263 (Walvis Ridge, South Atlantic)

open access: yesGeosciences, 2020
Here we present relative abundances of planktic foraminifera that span the Early Eocene Climatic Optimum (EECO) at Ocean Drilling Program (ODP) Site 1258 in the western equatorial Atlantic.
Roberta D’Onofrio   +4 more
doaj   +1 more source

Ecological limiting factors of early hominins in western Eurasia

open access: yesOne Health & Risk Management, 2023
Introduction. Early hominin (Homo ex. gr. erectus) dispersals from Africa into western Eurasia took place during the Early Pleistocene. Evidence points to the presence of humans in Western Europe, specifically Spain, around 1.1-1.2 Ma and in the ...
Roman CROITOR
doaj  

Mesozoic dinosaurs from Brazil and their biogeographic implications

open access: yesAnais da Academia Brasileira de Ciências, 2011
The record of dinosaur body-fossils in the Brazilian Mesozoic is restricted to the Triassic of Rio Grande do Sul and Cretaceous of various parts of the country.
Jonathas S. Bittencourt, Max C. Langer
doaj   +1 more source

A large marine eosauropterygian reptile with affinities to nothosauroid diapsids from the Early Triassic of British Columbia, Canada [PDF]

open access: yesActa Palaeontologica Polonica, 2019
Sauropterygia, one of the main clades of Mesozoic marine reptiles, diversified shortly after the Permo-Triassic biotic crisis and afterwards remained one of the major components of Early Triassic and later Mesozoic marine ecosystems.
Torsten M. Scheyer   +2 more
doaj   +1 more source

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