Results 81 to 90 of about 19,060 (240)

Paleogene Mammals

open access: yes, 2004
Paleogene ...
Spencer G. Lucas, Kate E. Zeigler and Peter E. Kondrashov, eds.
core  

Oil-bearing potential and hydrocarbon occurrence characteristics of shale in Paleogene Hetaoyuan Formation in Biyang Sag, Nanxiang Basin

open access: yesShiyou shiyan dizhi
High-quality lacustrine shale beds within the Paleogene Hetaoyuan Formation in the Biyang Sag, Nanxiang Basin, exhibit significant potential for shale oil resources.
Yunyun JIN   +11 more
doaj   +1 more source

Ginkgo leaves from Paleogene sediments in Tasmania

open access: yes, 1999
A single nearly complete leaf and several fragments in Paleogene sediments from southern Tasmania confirm the Cenozoic presence of Ginkgo L. in Australia. The specimens, assigned to G.
Carpenter, RJ (15480650)   +1 more
core   +2 more sources

Paleogene talus deposits, Okayama City, Southwest Japan [PDF]

open access: yes, 1996
In eastern Chugoku area, Paleogene deposits have not been recognized until fission-track dating of so called "Mountain Gravels" was carried out (Suzuki et al. 1995).
Suzuki, Shigeyuki
core   +1 more source

Isotopic composition of carbon and oxygen from Paleogene deposits of some Pacific DSDP Holes

open access: yes, 1993
Isotopic composition of carbon and oxygen from Paleogene deposits of some Pacific DSDP ...
Shcherbinina, A E   +5 more
core   +1 more source

Simulations of the Impact Winter at the Cretaceous-Paleogene Boundary

open access: yes, 2019
Monthly atmospheric data associated with "Causes and Climatic Consequences of the Impact Winter at the Cretaceous-Paleogene Boundary" by Tabor et al. (GRL).
Clay Tabor (7885058)   +9 more
core   +1 more source

The Cretaceous/Paleogene Boundary Deposits on Gorgonilla Island

open access: yes, 2019
A ca. 20 mm thick spherule bed representing Chicxulub impact ejecta deposits and marking the Cretaceous/Paleogene (K/Pg) boundary was recently discovered on Gorgonilla Island (Gorgona National Natural Park, Pacific of Colombia). This discovery represents
Rodríguez, José Vicente,   +13 more
core   +1 more source

The cranial, mandibular, and hyoid anatomy of softshell turtles (Trionychidae): A revised character list for phylogenetic analysis

open access: yesThe Anatomical Record, Volume 309, Issue 10, Page 2790-2837, October 2026.
Abstract Softshell turtles (Pan‐Trionychidae) are an early branching clade of hidden‐necked turtles (Cryptodira) with a rich fossil record extending back to the Early Cretaceous. The evolutionary history of softshell turtles is still unresolved because of their conservative morphology combined with high levels of polymorphism related to morphological ...
Léa C. Girard, Walter G. Joyce
wiley   +1 more source

Post Cretaceous/Paleogene boundary recovery of the deep marine ecosystem recorded by benthic foraminiferal morphogroups

open access: yesActa Palaeontologica Polonica
The uppermost 2 meters of the Maastrichtian Scaglia Rossa Fm. (Gubbio, Italy) record a notable change in the proportions of morphogroups of deep-water agglutinated foraminifera beginning about 1.4 m below the boundary, where we observe a gradual decrease
Michael A. Kaminski   +2 more
doaj   +1 more source

Endocranial anatomy of the earliest Cretaceous European neosuchian crocodyliform Pholidosaurus purbeckensis provides new evidence for the ecological evolution of Pholidosauridae

open access: yesJournal of Anatomy, Volume 249, Issue 4, Page 787-802, October 2026.
We present new insights into the internal cranial anatomy of the neosuchian crocodyliform Pholidosaurus purbeckensis, based on CT‐scan data of material from the lowermost Cretaceous Purbeck Limestone Group, southern UK. From the study of the endocast, we obtained new information on the phylogeny and the ecological evolution of the Family ...
Leonardo Barbini   +4 more
wiley   +1 more source

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