Results 131 to 140 of about 62,665 (270)

The ammonites of the Middle Jurassic Cranocephalites beds of East Greenland. Appendix: pages 129-145 [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2015
Appendix: Description of a new Bajocian (Middle Jurassic) ammonite species, Cranocephalites tvaerdalensis sp.nov., from Geographical Society Ø, North-East Greenland. A new Cranocephalites species, C. tvaerdalensis sp. nov., is described.
P. Alsen
doaj  

Evaluating Bayesian Morphological Clocks for Estimating a Dated Phylogeny in a Relict and Fossil‐Rich Family of Wasps (Hymenoptera, Chrysidoidea)

Zoologica Scripta, EarlyView.
ABSTRACT In recent years, a wide array of tools originally developed for molecular dating analyses has been adapted for use within a morphological clock perspective. This is of paramount relevance for taxonomic groups that cannot be sampled in forms suitable for DNA extraction.
Anderson Lepeco, Gabriel A. R. Melo, Brunno B. Rosa   +2 more
wiley   +1 more source

Geological and geochemical conditions for the formation of the oil composition in the deposits of the Permian and Jurassic oil and gas complexes in the Fukang depression (Junggar basin)

Georesursy
Within the eastern part of the Fukang depression, the main productive series are confined to the Permian and Jurassic oil and gas complexes (OGC), in which the Middle Permian and Lower-Middle Jurassic oil and gas source rocks (OGSRs) are distinguished ...
H. Yang, E. V. Soboleva
doaj   +1 more source

New Earwigs from the Middle Jurassic Jiulongshan Formation of Northeastern China (Dermaptera). [PDF]

Insects, 2023
Yin Y, Shih C, Engel MS, Ren D.
europepmc   +1 more source

The Jurassic of Denmark and Greenland: Shallow marine syn-rift sedimentation: Middle Jurassic Pelion Formation, Jameson Land, East Greenland [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2003
The Middle Jurassic Pelion Formation – Fossilbjerget Formation couplet of Jameson Land, East Greenland, is a well-exposed example of the Middle Jurassic inshore–offshore successions characteristicof the rifted seaways in the Northwest European – North ...
Engkilde, Michael
doaj  

New Osmylopsychopid Taxa from the Middle Jurassic of Northeastern China (Neuroptera: Osmylopsychopidae). [PDF]

Insects, 2023
Liu X, Ren D, Shih C, Wang Y.
europepmc   +1 more source

New Fossil Evidence Suggests That Angiosperms Flourished in the Middle Jurassic. [PDF]

Life (Basel), 2023
Han L, Zhao Y, Zhao M, Sun J, Sun B, Wang X.   +5 more
europepmc   +1 more source

Gas-Source Comparison and Hydrocarbon Generation and Expulsion Histories of the Main Source Rocks of the Middle Jurassic Shaximiao Formation, Western Sichuan Basin. [PDF]

ACS Omega, 2023
Zeng J, Zuo Y, Zheng Z, Zhang J, Ge J, Song L, Xiao Y, Zhao X.   +7 more
europepmc   +1 more source

A new juvenile sauropod specimen from the Middle Jurassic Dongdaqiao Formation of East Tibet. [PDF]

PeerJ, 2023
An X, Xu X, Han F, Sullivan C, Wang Q, Li Y, Wang D, Wang B, Hu J.   +8 more
europepmc   +1 more source

Contribution of the Lower-Middle Jurassic source rocks in petroleum potential of the Jurassic-Cretaceous series within the central part of West Siberia

Georesursy
In this paper, based on a geochemical study of rock samples and fluids, it is proven that carbon-bearing deposits of the Lower and Middle Jurassic complex of Western Siberia on the southern outskirts of the Khanty-Mansiysk and Yamalo-Nenets Autonomous ...
D. Yu. Kalacheva, I. A. Sannikova, N. V. Morozov   +2 more
doaj   +1 more source