Results 11 to 20 of about 10,012 (242)

Structure and formation of the Lower Cretaceous–Eocene section in the central part of the Simferopol Uplift

Учёные записки Казанского университета: Серия Естественные науки, 2022
This article provides the first detailed description of the 25-m thick Cretaceous–Eocene section near the Mazanka village and its stratigraphic subdivision.
K.A. Dubkova, S.B. Shishlov, E.M. Bugrova, E.Yu. Zakrevskaya   +3 more
doaj   +1 more source

Eocene phymaraphiniid demosponges from South Western Australia: filling the gap

Acta Palaeontologica Polonica, 2023
We describe two new genera of phymaraphiniid lithistid sponges Twertupia gen. nov. and Pickettispongia gen. nov. from the upper Eocene Pallinup Formation of South Western (SW) Australia based on new, rich and very well preserved material. Type material
ANDRZEJ PISERA, MARIA ALEKSANDRA BITNER, JANE FROMONT   +2 more
doaj   +1 more source

Evidence for Wide Dispersal in a Stem Galliform Clade from a New Small-sized Middle Eocene Pangalliform (Aves: Paraortygidae) from the Uinta Basin of Utah (USA)

Diversity, 2020
A new bird coracoid from the Uinta Formation in the Uinta Basin in Utah (USA) records the presence of the only known pangalliform from the middle Eocene of North America, occurring in a >15 million year gap in their history.
Thomas A. Stidham, K.E. Beth Townsend, Patricia A. Holroyd   +2 more
doaj   +1 more source

A new species and a key to Isomira Mulsant, 1856 (Coleoptera: Tenebrionidae: Alleculinae) from Eocene Baltic amber [PDF]

Кавказский энтомологический бюллетень, 2021
Based on a single well-preserved specimen from Eocene Baltic amber, a new comb-clawed beetle Isomira lobanovi sp. n. (Alleculinae: Alleculini: Gonoderina) is described and illustrated.
M.V. Nabozhenko, A. Bukejs
doaj   +1 more source

Segmented prediction of TOC based on lithology: a case study of the lower sub-member of the third member of the Eocene Shahejie Formation, Dongying Sag, Bohai Bay Basin

Shiyou shiyan dizhi, 2021
The continental mud shale has a strong heterogeneity, and the prediction of its mineral composition, TOC (total organic carbon content) and other parameters is critical for the evaluation and optimization of continental shale oil and gas abundance.
Linjie ZHAO, Jianlin LU, Baohua WANG, Hao LI, Zhenxiang SONG, Yanxia ZHANG   +5 more
doaj   +1 more source

Petrology and geochemistry of Eocene volcanic rocks from southeast of Khur (Isfahan province, Central Iran)

Journal of Economic Geology, 2022
Introduction Subduction-related magmas are characterized by enrichment of large ion lithophile elements (LILEs), light rare earth elements (LREEs) and depletion in high field strength elements (HFSEs) (Harangi et al., 2007). These geochemical signatures
Paniz Shadman, Ghodrat Torabi
doaj   +1 more source

Sespe Eocene Didelphids [PDF]

Proceedings of the National Academy of Sciences, 1936
In segregating a number of tiny insectivore and primate jaws from the Sespe deposits of California, several specimens were noted that clearly belong to marsupials. These are all incomplete but possess interest because they record didelphids for the first time in the North American upper Eocene and secondly because this group of mammals has not been ...
openaire   +3 more sources

Cyclic sedimentary record of "red-greyish green" beds in the first Member of Eocene Kongdian Formation(Ek1), Dongying Sag: An example from the Well Wang 46 in Wangjiagang area

地质科技通报, 2022
Vertically superimposed "red-greyish green" assemblages are developed in the first member of the Eocene Kongdian Formation (Kong1 member) in the Dongying sag of the Bohai Bay Basin, showing certain cyclic sedimentary characteristics.Inorder to better ...
Tao Nian, Zaixing Jiang, Huimin Liu, Yiming Huang, Yougen Deng, Jiayi Meng, Yang Li   +6 more
doaj   +1 more source

Life history of the most complete fossil primate skeleton: exploring growth models for Darwinius [PDF]

Royal Society Open Science, 2015
Darwinius is an adapoid primate from the Eocene of Germany, and its only known specimen represents the most complete fossil primate ever found. Its describers hypothesized a close relationship to Anthropoidea, and using a Saimiri model estimated its age ...
Sergi López-Torres, Michael A. Schillaci, Mary T. Silcox   +2 more
doaj   +1 more source

Middle Eocene Rhodoliths from Tropical and Mid-Latitude Regions

Diversity, 2020
During the greenhouse conditions prevailing in the early−middle Eocene, larger benthic foraminifers (LBF) spread out on carbonate platforms worldwide while rhodolith beds were scarcely represented.
Julio Aguirre, Juan C. Braga, Victoriano Pujalte, Xabier Orue-Etxebarria, Edward Salazar-Ortiz, Daniel Rincón-Martínez, Manuel Abad, Fernando Pérez-Valera   +7 more
doaj   +1 more source