نتایج جستجو برای: late triassic

تعداد نتایج: 198191  

2011
Thomas Martin ZHE-XI LUO THOMAS MARTIN

Docodonts are aMesozoicmammal group (Synapsida:Mammaliaformes) with a fossil record from theMiddle Jurassic to the late Early Cretaceous. With highly distinctive molars for both shearing and grinding functions, docodonts are inferred to have diverse dietary adaptations, including insectivory, omnivory, and even carnivory. This group also offers the earliest-known case of mammalian swimming adap...

2016
Martín D. Ezcurra Felipe Montefeltro Richard J. Butler

The rhynchosaurian archosauromorphs are an important and diverse group of fossil tetrapods that first appeared during the Early Triassic and probably became extinct during the early Late Triassic (early Norian). Here, the early evolution of rhynchosaurs during the Early and early Middle Triassic (Induan-Anisian: 252.2-242 Mya) is reviewed based on new anatomical observations and their implicati...

2010
Ron Harris James Kaiser Anthony Hurford Andy Carter

Paleotemperature indicators and apatite fission track analysis of Australian continental margin cover sequeRces accreted to the active Banda arc-continent collision indicate little to no heating during rapid late Neogene uplift and exhumation. Thermal maturation patterns of vitrinite reflectance, conodont alteration and' illite crystallinity show that peak paleotemperatures (PPT) increase with ...

2017
A. W. Crompton T. Owerkowicz B.-A. S. Bhullar C. Musinsky A. W. CROMPTON T. OWERKOWICZ B.-A. S. BHULLAR C. MUSINSKY

Nasal regions of the non-mammalian cynodonts Massetognathus, Probainognathus, and Elliotherium were reconstructed from micro-computed tomography scans and compared with scans and published accounts of more derived forms, including Brasilitherium, Morganucodon, Haldanodon, and extant mammals. The basic structure of the modern mammalian nose, already present in non-mammalian cynodonts of the Earl...

Bahaeddin Hamidi Nazanin BadriKolalo Seyed Ali Aghanabati Seyed Hamid Vaziri,

Conodonts are the most important fossil remains from the largest Phanerozoic extinction as well as the mass extinction of the late Paleozoic and could be used for exact dating during this period. Triassic deposits located in the Elikah Formation contain exposures in most of the Alborz sections as well as the Zal section in northwestern Iran. In this study, the Elikah Formation was investigated ...

ژورنال: علوم زمین 2018
Mohammad Reza Sheikholeslami

Evidence of at least ten different tectonic- controlled sedimentary basins can be recognized in the central part of the Alborz Mountains in the Middle part of the Alpine-Himalayan belt. They formed from Neoprotrozoic to recent time as the results of the relative plate motion in southwest of Asia in Tethyan realm. The basins include: (1) Prototethys Late Neo-Proterozoic to Early Ordovician epi-c...

Journal: :دیرینه شناسی 0

study of plant macrofossils of jurassic sediments of shemshak group in eshkevarat-e-olia areas led to identification of two species consisting lobifolia rotundifolia from ferns group (division pteridophyta & filicales order) and ptilophyllum vasekgahense from gymnospermae group (division cycadophyta & order bennettitales) that had been reported from rhaetian (late triassic) and dogger (middle j...

Journal: :Diversity 2023

New discoveries in the lower Popo Agie Formation (lower carbonate unit) of central Wyoming necessitated a reevaluation USNM 494329 from same unit, only known hyperodapedontine rhynchosaur western North America. Well Gondwanan deposits, hyperodapedontines appear to be restricted Carnian age (Late Triassic), with exception Teyumbaita earliest Norian Triassic) Brazil. Initially assigned c.f. ‘Hype...

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