Results 231 to 240 of about 1,947,082 (272)

The Jurassic faunas of the Canadian Arctic, middle and upper Jurassic, ammonites

1961
Middle and Upper Jurassic faunas have a wide distribution in the Canadian Arctic. The following index ammonites indicate the presence of various stages: Leioceras opa/inum, Pseudolioceras m'c/intocki (see Frebold, 1960) , and Erycites cf. E. howelli (lower Bajocian) ; Cranocephalites borealis and C. warreni n. sp.
openaire   +1 more source

Stratigraphy and Sedimentation of the Middle Jurassic, U.A.E.

2000
Abstract Wadi Naqab, SE of Ras Al Khaimah in the U.A.E., exposes an 800 m thick, shallow-water, Middle Jurassic succession. The base of the Bajocian is placed at a sequence boundary a t ca. 460 m above the top Triassic and 45 m beneath the horizon that yielded the ammonite Poecilomorphus sp. The Bajocian/Bathonian contact is marked by
Jose E. De Matos, Gordon M. Walkden
openaire   +1 more source

Middle Jurassic inoceramids from Argentina

Journal of Paleontology, 1990
Extensive collections from stratigraphically controlled sections allow reassessment and systematic revision of Middle Jurassic inoceramids from Argentina. Two species are doubtfully referred toParainoceramusVoronetz, includingP.?westermannin. sp. Five species ofRetroceramusKoshelkina, includingR.cf.R. marwicki(Speden),R.
openaire   +1 more source

Middle Jurassic turtles from southern Thailand

Geological Magazine, 2002
A new genus and species of primitive cryptodiran turtle, Siamochelys peninsularis n. g. n. sp., from the Middle Jurassic Mab Ching locality, in the southern peninsula of Thailand, is described on the basis of complete shells. They are characterized by a combination of primitive features (the presence of a pair of mesoplastra meeting on the midline ...
HAIYAN TONG, ERIC BUFFETAUT, VARAVUDH SUTEETHORN   +2 more
openaire   +1 more source

Middle Jurassic with Selliporella donzellii

2007
Algal remnants, that occur only rarely in the lower part of the Biokovo road, become more frequent and abundant as we go higher through the succession. The maximum concentration of the algal skeletons or skeletal fragments, mostly of Selliporella donzellii SARTONI & CRESCENTI, occur within individual beds or thinner intervals of successive layers in ...
Sokač, Branko, Velić, Ivo
openaire  

Glossopterid Leaves from the Middle Jurassic of Oaxaca, Mexico

Science, 1969
Leaves indistinguishable from those of the late Paleozoic genus Glossopteris occur in Middle Jurassic beds in the State of Oaxaca, Mexico. If they are biologically related to the Permo-Carboniferous Glossopteris, the occurrence in Mexico is the latest report of the genus.
openaire   +2 more sources

A new species of Omeisaurus (Dinosauria: Sauropoda) from the Middle Jurassic of Yunyang, Chongqing, China

Historical Biology, 2021
Shan Jiang, Hailu You, Xin-Xin Ren
exaly  

A revision of the referred specimen of Chuanjiesaurus anaensis Fang et al., 2000: a new early branching mamenchisaurid sauropod from the Middle Jurassic of China

Historical Biology, 2021
Hailu You, Xin-Xin Ren
exaly  

About the Middle Asia Jurassic Flora

The Palaeobotanist, 1976
N. P. Gomolitzky, R. KH. Khudaiberdyev
openaire   +1 more source

Evolution of Middle Jurassic ammonites ‐a reply

Lethaia, 1985
Ulf Bayer, George R. McGhee
openaire   +1 more source