Results 51 to 60 of about 345,840 (384)

Biostratigraphy and conditions of formation of Albian and Cenomanian deposits on the south-western slope of the Ukrainian Shield (Middle Dnister region)

open access: yesGeo&Bio, 2021
Data from a comprehensive study into the lithological composition and lateral distribution of Albian and Cenomanian deposits in the Middle Dnister region (Ukraine), in the watersheds of the Smotrych–Tarnava–Studenytsia–Ushytsia–Kalyus–Zhvan–Lyadova ...
L. Kyselevych, O. Kovalchuk
doaj   +1 more source

An anhanguerian pterodactyloid mandible from the lower Valanginian of Northern Germany, and the German record of Cretaceous pterosaurs [PDF]

open access: yesActa Palaeontologica Polonica, 2021
The record of Cretaceous pterosaur remains from Germany is sparse. The material recovered to date includes the fragmentary holotypes of Targaryendraco wiedenrothi and Ctenochasma roemeri, as well as a few isolated pterodactyloid teeth and some ...
Pascal Abel   +3 more
doaj   +1 more source

Comparative osteohistology of Hesperornis with reference to pygoscelid penguins: the effects of climate and behaviour on avian bone microstructure [PDF]

open access: yesRoyal Society Open Science, 2014
The broad biogeographic distribution of Hesperornis fossils in Late Cretaceous Western Interior Seaway deposits has prompted questions about whether they endured polar winters or migrated between mid- and high latitudes.
Laura E. Wilson, Karen Chin
doaj   +1 more source

Identifying the oldest larva of a myrmeleontiformian lacewing—a morphometric approach [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Neuroptera is one of the smaller ingroups of Holometabola, the ingroup of Insecta characterised by “complete” metamorphosis. Neuroptera comprises about 6000 species in the modern fauna, but appears to have been more diverse in the past.
Andrés F. Herrera-Flórez   +6 more
doaj   +1 more source

New record of Abelisauroid Theropods from the Bauru group (upper cretaceous), São Paulo State, Brazil [PDF]

open access: yes, 2014
Isolated bones of abelisauroid theropods from the Bauru Group (Late Cretaceous, Brazil), are described. They correspond to three individuals represented by fused ischia and part of the ilium, a partial axis, and a right fi bula, respectively. The fossils
Iori, Fabiano V.   +2 more
core   +1 more source

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+18 more sources

Geological heritage of the Northwestern Caucasus and its importance for promoting a better understanding of the Earth's structure and evolution

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2022
In this article, 13 sites of geological heritage were identified in the Seversk district of the Krasnodar region (Russia), which rests on the northern slope of the Northwestern Caucasus.
Z.A. Tolokonnikova
doaj   +1 more source

Response and Recovery of the Comanche Carbonate Platform Surrounding Multiple Cretaceous Oceanic Anoxic Events, Northern Gulf of Mexico [PDF]

open access: yes, 2015
The ubiquity of carbonate platforms throughout the Cretaceous Period is recognized as a product of high eustatic sea-level and a distinct climatic optimum induced by rapid sea-floor spreading and elevated levels of atmospheric carbon-dioxide.
Da-Gama, Rui O.B.P.   +5 more
core   +1 more source

Faunal change in Cretaceous endemic shallow-marine bivalve genera/subgenera of the northeast Pacific [PDF]

open access: yes, 2020
Endemic shallow-marine Cretaceous bivalves in the northeast Pacific region (NEP), extending from southwestern Alaska to the northern part of Baja California Sur, Mexico, are tabulated and discussed in detail for the first time.
Squires, Richard L.
core  

A Late Cretaceous amber biota from central Myanmar

open access: yesNature Communications, 2018
Insect faunas are extremely rare near the latest Cretaceous with a 24-million-year gap spanning from the early Campanian to the early Eocene. Here, we report a unique amber biota from the Upper Cretaceous (uppermost Campanian ~72.1 Ma) of Tilin, central ...
D. Zheng   +15 more
semanticscholar   +1 more source

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