Results 121 to 130 of about 2,747 (160)

Early Tithonian (Late Jurassic) Ammonite Parapallasiceras newly discovered from the Itoshiro Subgroup (Tetori Group) in the Hida Belt, northern Central Japan [PDF]

open access: yesProceedings of the Japan Academy Series B: Physical and Biological Sciences, 2005
Early Tithonian (Late Jurassic) ammonite Parapallasiceras cf. pseudocontiguum (Donze and Enay) was discovered in situ from the Kamihambara Formation of the Itoshiro Subgroup (Tetori Group) distributed in the Hida Belt, in Fukui Prefecture, northern ...
Toshihiro Yamada
exaly   +3 more sources

Stratigraphy of Tithonian (Ohauan‐Puaroan) marine beds near Port Waikato, New Zealand, and a redescription of Belemnopsis aucklandica (Hochstetter) [PDF]

open access: yesNew Zealand Journal of Geology, and Geophysics, 2001
Some 1500 m of marine Ohauan and Puaroan strata in the Port Waikato region of New Zealand are restudied in an attempt to resolve lithostratigraphic and biostratigraphic anomalies in published works.
Challinor, A.B.
exaly   +1 more source

A new Tithonian ophthalmosaurid ichthyosaur from Coahuila in northeastern Mexico

Alcheringa: An Australasian Journal of Palaeontology, 2021
Historically, Mexican Jurassic ichthyosaurs have been referred to European representatives of the cosmopolitan family-level clade Ophthalmosauridae.
Jair Israel Barrientos-Lara   +1 more
openaire   +1 more source

The Pliensbachian and Tithonian extinction events

Nature, 1986
The claim by Raup and Sepkoski1, that an approximately 26-Myr mass extinction periodicity can be recognized on a global scale at family level over the past 250 Myr, has excited much attention and provoked speculation about an ultimate extraterrestrial cause2–10.
openaire   +1 more source

Zapaliinae, a new subfamily of Tithonian–Berriasian ataxioceratid ammonites

PalZ, 2017
The recent recognition of the earliest Andean Tithonian ammonite fauna (Picunleufuense Zone) has allowed a balanced classification of the ataxioceratid ammonites, reflecting their phylogenetic relationships. The Picunleufuense Zone fauna, first recognized in the Neuquen Basin at the base of the Vaca Muerta Formation, is represented by numerous records ...
Horacio Parent   +3 more
openaire   +1 more source

Ammonite habitats in the Early Tithonian of Western Tethys

Lethaia, 1992
Cccca, F. 1992 07 15: Ammonite habitats in the Early Tithonian of Western Tethys. Habitats of Early Tithonian ammonites of Western Tethys are inferred from analysis of faunal spectra, functional morphology. facies characteristics and palaeogeography.
openaire   +1 more source

Salt glands in a Tithonian metriorhynchid crocodyliform and their physiological significance

Lethaia, 2000
Our knowledge of Mesozoic tetrapods is based mainly on osteological evidence. The discussion of the evolution of any homeostatic system is highly speculative because direct non-osteological evidence is uncommon. Here we report an extraordinarily well-preserved cast of a pair of lobulated protuberances in the skull of the marine metriorhynchid ...
Marta Fernández, Zulma Gasparini
openaire   +1 more source

The bivalve Aulacomyella from the Early Tithonian (Late Jurassic) of Antarctica

Antarctic Science, 1991
The bivalve Aulacomyella is described formally from Tithonian deposits of the Antarctic Peninsula region for the first time. Two species are recognized. A. willeyi Kelly sp. nov. was collected in situ from the Nordenskjöld Formation, Longing Gap on the east coast of Graham Land, and in clasts reworked into Cretaceous glide block deposits on James Ross ...
Kelly, Simon R.A., Doyle, Peter
openaire   +2 more sources

A Sequence Stratigraphic Reference Section for the Tithonian of Lebanon

2000
Abstract Central Lebanon provides some of the best exposed and most readily accessible Upper Jurassic (Kimmeridgian-Tithonian) sections in the Middle East, and is one of the few places where lateral equivalents of the prolific Arab Formation (Kimmeridgian-Tithonian) reservoirs of Peninsular Arabia can be studied at outcrop.
openaire   +1 more source

Caribbean Lower Tithonian ammonites from central-east Mexico

Geobios, 2009
Imlay's ammonite species Paradontoceras butti and Paradontoceras antilleanum are first reported from central-east Mexico under precise stratigraphic control. Mexican and Cuban ammonites referred to these species have been studied and proved to have been gathered from a relatively limited area within the southern paleomargin of the north American Plate,
Ana Bertha Villaseñor, Federico Olóriz
openaire   +1 more source

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