Results 1 to 10 of about 5,569 (256)

Phylogenetic paleobiogeography of Late Ordovician Laurentian brachiopods [PDF]

open access: greenEstonian Journal of Earth Sciences, 2014
Phylogenetic biogeographic analysis of four brachiopod genera was used to uncover large-scale geologic drivers of Late Ordovician biogeographic differentiation in Laurentia. Previously generated phylogenetic hypotheses were converted into area cladograms,
Jennifer E. Bauer, Alycia L. Stigall
doaj   +2 more sources

The first Oligocene sea turtle (Pan-Cheloniidae) record of South America [PDF]

open access: yesPeerJ, 2018
The evolution and occurrence of fossil sea turtles at the Pacific margin of South America is poorly known and restricted to Neogene (Miocene/Pliocene) findings from the Pisco Formation, Peru.
Edwin Cadena, Juan Abella, Maria Gregori
doaj   +3 more sources

A new record of Tayassuidae (Mammalia: Cetartiodactyla) from the Pleistocene of northern Brazil [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2021
In this contribution, we described a new fossil of a Pleistocene Tayassuidae from northern Brazil. The specimen is a left dentary with molars assigned to cf. Pecari tajacu recovered from an outcrop of the Rio Madeira Formation, State of Rondônia, Brazil.
PAULA L. COPETTI   +3 more
doaj   +1 more source

Devonian Tentaculitoids from Brazil: extinction and stratigraphic distribution

open access: yesTerr@ Plural, 2021
The class Tentaculitoidea is an extinct group composed of small carbonate coniform-shaped invertebrates, distributed from Ordovician to Devonian. This group is more often recorded to the North Hemisphere, being less recorded to South Hemisphere deposits.
Jeanninny Carla Comniskey   +5 more
doaj   +1 more source

First record of Oceanic Anoxic Event 2 in the Eastern Carpathians: implications for chemostratigraphic and biostratigraphic correlations

open access: yesFrontiers in Earth Science, 2023
This study aims to investigate a marlstone and claystone succession located at the southern end of the Eastern Carpathians, a region where oceanic anoxic event 2 (OAE2) has not been pointed out so far.
Mihaela Melinte-Dobrinescu   +8 more
doaj   +1 more source

First record of chimaeroid fish Ischyodus from the Upper Jurassic of southwestern Gondwana [PDF]

open access: yesActa Palaeontologica Polonica, 2021
This study presents two specimens of Chimaeriformes from Upper Jurassic strata of central Chile. The material was recovered from Tithonian levels of the Baños del Flaco Formation and includes two different individuals, one preserving two articulated ...
Rodrigo A. Otero   +5 more
doaj   +1 more source

A New Sinamiin Fish (Actinopterygii) from the Early Cretaceous of Thailand: Implications on the Evolutionary History of the Amiid Lineage

open access: yesDiversity, 2023
The Sinamiidae are a family of halecomorph fishes (Holostei) stratigraphically limited to the Lower Cretaceous and confined to East Asia. The first species of sinamiids were discovered in China, and then new occurrences were recorded in Thailand and ...
Uthumporn Deesri   +6 more
doaj   +1 more source

Biogeographic dynamics of graptolite species during the end-Ordovician mass extinction in South China [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
Spatial and temporal analysis of geographical biodiversity dynamics and reconstruction of species distribution areas are essential for revealing the patterns of evolution of graptolites and their survival strategies during bio-events.
Qing Chen, Linna Zhang
doaj   +1 more source

Trough cross-bedded rhodolith limestones in the Atlantic-linked Ronda Basin (Messinian, Southern Spain)

open access: yesFrontiers in Earth Science, 2022
Rhodolith limestones occur in the upper part of the Miocene infill of the Ronda Basin in southern Spain. This basin was an embayment at the southern margin of the Atlantic-linked Guadalquivir Basin, the foreland basin of the Betic Cordillera.
Juan C. Braga, Julio Aguirre
doaj   +1 more source

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