Results 61 to 70 of about 35,895 (262)
Papers in Palaeontology, Volume 11, Issue 2, March/April 2025.Abstract The Squalodontidae are one of the most historic families within the Cetacea, given that Squalodon was first named in 1840. Since Squalodon's initial description, workers in the 1800s were eager to assign heterodont cetacean teeth to this family; as a result, it became a wastebasket with many species based on fragmentary remains.
Margot D. Nelson +2 more
wiley +1 more source
Journal of Palaeogeography, 2014 The Kutch Basin of western India is famous for its rich assemblages of the Callovian–Oxfordian ammonites. The family Oppelidae Douvillé is the second most diverse ammonite group after perisphinctids during the Middle–Upper Jurassic.
Pinaki Roy
doaj +1 more source
Sample Size for Concurrent Species Detection in a Species-Rich Assemblage [PDF]
arXiv, 2018 Monitoring the distribution of microfossils in stratigraphic successions is an essential tool for biostratigraphic, evolutionary and paleoecologic/paleoceanographic studies. To estimate the relative abundance (%) of a given species, it is necessary to estimate in advance the minimum number of specimens to be used in the count (n).
arxiv
The stratigraphy, correlation, provenance and palaeogeography of the Skiddaw Group (Ordovician) in the English Lake District [PDF]
, 1995 A new lithostratigraphy is presented for the Skiddaw Group (lower Ordovician) of the English Lake District. Two stratigraphical belts are described. Five formations are defined in the Northern Fells Belt, ranging in age from Tremadoc to early Llanvirn.
Cooper, A.H. +5 more
core +1 more source
Basin Research, Volume 37, Issue 2, March–April 2025.The Base Cretaceous unconformity in Southwest Britain, Iberia, and adjacent North Atlantic basins is a composite of at least three unconformities formed during the Middle Jurassic, Late Jurassic–Early Cretaceous, and Mid‐Cretaceous. Seismic data reveal that the Jurassic–Early Cretaceous unconformity, linked to Berriasian uplift and North Atlantic ...
S. S. Husein +3 more
wiley +1 more source
Carnets de Géologie, 2005 The study of acritarchs in Russia was initiated by Naumova and Timofeev in the early 50s. Their initial results showed the high potential of these microfossils for biostratigraphy and was followed by a remarkable degree of research activity in the 70s ...
Raevskaya Elena
doaj
Youngest dinocephalian fossils extend the Tapinocephalus Zone, Karoo Basin, South Africa
South African Journal of Science, 2015 The dinocephalians (Synapsida, Therapsida) were one of the dominant tetrapod groups of the Middle Permian (Guadalupian Epoch, ~270–260 million years ago) and are most abundantly recorded in the Tapinocephalus Assemblage Zone (AZ) of the Main Karoo Basin,
Michael O. Day +5 more
doaj +1 more source
Dating of the oldest continental sediments from the Himalayan foreland basin [PDF]
, 2001 A detailed knowledge of Himalayan development is important for our wider understanding of several global processes, ranging from models of plateau uplift to changes in oceanic chemistry and climate(1-4).
A Uddin +27 more
core +1 more source
Journal of Systematics and Evolution, Volume 63, Issue 2, Page 379-400, March 2025.Synthesis of the paleobiogeographical history of Ampelopsideae from Eurasia. Nekemias mucronata sp. nov. (A); Ampelopsis hibschii (B). The results indicate that both species were already present in Eurasia during the late Eocene and later, during Oligocene times, dispersed across Eurasia. The last population of N.
Aixa Tosal, Alba Vicente, Thomas Denk
wiley +1 more source
Journal of Mathematical and Fundamental Sciences, 2019 Sari. Analisis stratigrafi sikuen memerlukan data yang menyeluruh dari berbagai disiplin ilmu geologi, termasuk biostratigrafi. Secara hipotesis, biostratigrafi (foraminifera) dapat dijadikan alat untuk mengidentifikasi sikuen.
Khoiril Anwar M.
doaj