Results 1 to 10 of about 19,799 (211)

A revised turtle assemblage from the Upper Cretaceous Menefee Formation (New Mexico, North America) with evolutionary and paleobiostratigraphic implications [PDF]

open access: yesPeerJ
The middle Campanian Menefee Formation (Fm.) of the San Juan Basin of New Mexico is a relatively understudied terrestrial deposit in southern Laramidia preceding the fossil-rich upper Campanian Fruitland and Kirtland formations that have been studied for
Brent Adrian   +2 more
doaj   +3 more sources

New monstersaur specimens from the Kaiparowits Formation of Utah reveal unexpected richness of large-bodied lizards in Late Cretaceous North America [PDF]

open access: yesRoyal Society Open Science
Monstersauria (Squamata, Anguimorpha) fossils are present in most Upper Cretaceous sedimentary basins in western North America, but despite almost a century of collection, their record remains extremely fragmentary.
C. Henrik Woolley   +4 more
doaj   +2 more sources

A large hadrosaurid dinosaur from Presa San Antonio, Cerro del Pueblo Formation, Coahuila, Mexico [PDF]

open access: yesActa Palaeontologica Polonica, 2021
New hadrosaurid postcranial material is reported, collected near Presa San Antonio, Parras de la Fuente municipality, Coahuila, Mexico, in a sedimentary sequence belonging to the upper Campanian of the Cerro del Pueblo Formation, in the Parras Basin. The
Rogelio Antonio Reyna-Hernández   +3 more
doaj   +1 more source

Ontogeny and variation in the skull roof and braincase of the hadrosaurid dinosaur Maiasaura peeblesorum from the Upper Cretaceous of Montana, USA [PDF]

open access: yesActa Palaeontologica Polonica, 2021
Five new partial skulls of the hadrosaurid dinosaur Maiasaura peeblesorum from the Linster Quarry bone bed (Two Medicine Formation, Campanian) in Montana, USA, provide the basis for a description of the skull roof and braincase morphology of this taxon ...
BRADLEY MCFEETERS   +2 more
doaj   +1 more source

The funerary monuments of Campanian Augustales: a preliminary study [PDF]

open access: yesStudia Antiquitatis et Medii Aevi Incohantis, 2021
The article presents the results of a preliminary study on funerary monuments of Campanian Augustales. The author focused on the material objects (meaning objects upon which the text was inscribed and preserved tombs) – their typology, the material from ...
Wojciech Pietruszka
doaj   +1 more source

A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica [PDF]

open access: yesActa Palaeontologica Polonica, 2020
We sectioned a permineralized stem preserved in marine calcareous concretions from the Campanian (Upper Cretaceous) of James Ross Island, Antarctic Peninsula using the cellulose-acetate peel technique.
M. Laura Pipo   +2 more
doaj   +1 more source

A new ankylosaurine dinosaur from the Judith River Formation of Montana, USA, based on an exceptional skeleton with soft tissue preservation [PDF]

open access: yesRoyal Society Open Science, 2017
The terrestrial Judith River Formation of northern Montana was deposited over an approximately 4 Myr interval during the Campanian (Late Cretaceous). Despite having been prospected and collected continuously by palaeontologists for over a century, few ...
Victoria M. Arbour, David C. Evans
doaj   +1 more source

A description of a Denazinemys nodosa specimen (Testudinata, Baenidae) from the Late Cretaceous Kaiparowits Formation of southern Utah [PDF]

open access: yesFossil Record, 2023
Denazinemys nodosa is a Late Cretaceous representative of the North American turtle clade Baenidae diagnosed, among others, by a shell surface texture consisting of raised welts.
Gaël E. Spicher   +5 more
doaj   +3 more sources

A small azhdarchoid pterosaur from the latest Cretaceous, the age of flying giants [PDF]

open access: yesRoyal Society Open Science, 2016
Pterosaur fossils from the Campanian–Maastrichtian of North America have been reported from the continental interior, but few have been described from the west coast.
Elizabeth Martin-Silverstone   +3 more
doaj   +1 more source

A new well-preserved sturgeon (Chondrostei: Acipenseridae) from the Late Cretaceous of Alberta, Canada [PDF]

open access: yesResearch & Knowledge, 2017
In June 2016, the remains of an articulated fish was discovered during field work in Dinosaur Provincial Park, in southern Alberta, Canada. Articulated remains of fishes are very rare in the park, so this specimen was carefully collected and prepared ...
Hiroki Sato   +3 more
doaj   +1 more source

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