Results 71 to 80 of about 15,420 (250)

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

Comparative functional morphological study of the tarsal joint mobility in artiodactyls and perissodactyls in light of astragalar morphological differences

open access: yesJournal of Anatomy, EarlyView.
This study investigated how variations in the shape of the astragalus affect tarsal joint behavior, using CT scans. In artiodactyls with a double‐pulley astragalus, the calcaneus shifted plantarly during plantarflexion. This suggests the movement increases hindlimb functional length and contributes to enhanced running speed.
Sei‐ichiro Takeda   +3 more
wiley   +1 more source

Paleogene Sediment Character of Mountain Front Central Sumatra Basin

open access: yesIndonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v8i3.164The SE-NW trending Mountain Front of Central Sumatra Basin is located in the southern part of the basin. The Mountain Front is elongated parallel to the Bukit Barisan Mountain, extending from the Regencies of North Padang Lawas
P. A. Suandhi   +4 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, EarlyView.
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

Cenozoic foraminiferal and dinoflagellate cyst biostratigraphy of the Central North Sea

open access: yes, 1992
We present a detailed Cenozoic biostratigraphy for Paleogene bathyal and Neogene ncritic strata, north of 55° in the central North Sea, and offshore mid-Norway, using both forarninifera and dinoflagellate cysts. Construction of the zonations was assisted
L. Loemo   +7 more
core  

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

A reappraisal of Mesozoic-Cenozoic sequence stratigraphy in Offshore Indus Basin, Pakistan

open access: yesKuwait Journal of Science
The Offshore Indus Basin is a passive continental margin and a frontier zone for hydrocarbon exploration based on structural and stratigraphic features observed on seismic data.
doaj   +1 more source

Updating the forelimb anatomy of the domestic cat (Felis catus, Felidae) based on evolutionary inferences of its muscles and nerves I: Shoulder and brachium

open access: yesJournal of Anatomy, EarlyView.
In this study, we provide a detailed description of the shoulder and brachium muscles and the brachial plexus of the domestic cat (Felis catus). We identified muscular variants (articularis humeri, coracobrachialis longus, biceps brachii caput breve), clarified the independence of the anconeus medialis muscle from the triceps brachii muscle, and ...
Juan Fernando Vélez García   +2 more
wiley   +1 more source

Quantitative foraminiferal and palynomorph biostratigraphy of the Paleogene in the southwestern Barents Sea

open access: yes, 2004
The stratigraphic distribution of both foraminifera and dinoflagellate cysts is recorded from the Paleocene to Eocene Torsk Formation in 12 petroleum exploration wells drilled in the southwestern Barents Sea.
Johnson, K. , K.   +3 more
core  

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