نتایج جستجو برای: trace fossils

تعداد نتایج: 80653  

2017
Michael Frese Gerda Gloy Rolf G Oberprieler Damian B Gore

The Talbragar Fish Bed is one of Australia's most important Jurassic deposits for freshwater fishes, land plants and aquatic and terrestrial insects. The site has yielded many well preserved fossils, which has led to the formal description of numerous new species and higher taxa. The excellent preservation of many fossils has allowed detailed anatomical studies, e.g. of the early teleost fish C...

Journal: :The Paleontological Society Special Publications 1992

Journal: :Proceedings. Biological sciences 2011
Stephen L Brusatte Grzegorz Niedźwiedzki Richard J Butler

The ascent of dinosaurs in the Triassic is an exemplary evolutionary radiation, but the earliest phase of dinosaur history remains poorly understood. Body fossils of close dinosaur relatives are rare, but indicate that the dinosaur stem lineage (Dinosauromorpha) originated by the latest Anisian (ca 242-244 Ma). Here, we report footprints from the Early-Middle Triassic of Poland, stratigraphical...

Journal: :Palaeogeography, Palaeoclimatology, Palaeoecology 2015

Journal: :Science 2013
Ernesto Pecoits Kurt O Konhauser Natalie R Aubet Larry M Heaman Gerardo Veroslavsky Richard Stern Murray K Gingras

Gaucher et al. suggest that their field observations and petrographic analysis of one thin section do not support an Ediacaran age for the trace fossils-bearing strata of the Tacuarí Formation. We have strengthened our conclusion of an Ediacaran age for the Tacuarí Formation based on reassessment of new and previously presented field and petrographic evidence.

2005
ANDREW B. HECKERT SPENCER G. LUCAS ADRIAN P. HUNT

The Triassic System in Arizona has yielded numerous world-class fossil specimens, including numerous type specimens. The oldest Triassic vertebrates from Arizona are footprints and (largely) temnospondyl bones from the Nonesian (Early Triassic: Spathian) Wupatki Member of the Moenkopi Formation. The Perovkan (early Anisian) faunas of the Holbrook Member of the Moenkopi Formation are exceptional...

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