نتایج جستجو برای: upper triassic diversification
تعداد نتایج: 228621 فیلتر نتایج به سال:
Triassic tetrapod tracks have long been studied, including classic ichnofaunas such as those of the lower Newark Supergroup of eastern North America and the Bundsandstein of central Europe. They are known from all seven continents and encompass five archetypal vertebrate ichnofacies for nonmarine environments (Chelichnus, Grallator, Batrachichnus, Brontopodus, Characichnos), all of which are pr...
The first abundant, well-preserved fossils of the unusual archosauromorph reptile Trilophosaurus jacobsi Murry are from an Upper Triassic bonebed in the lower-most Trujillo Formation of the Chinle Group in Borden County, Texas. A nearly complete left side of the skull and incomplete but articulated mandible of a juvenile individual demonstrate that Trilophosaurus jacobsi Murry is referable to T...
The Redonda Formation (Upper Triassic: late Norian/Rhaetian: Apachean) of the Chinle Group of east-central New Mexico yields a significant tetrapod ichnofauna. Some specimens previously referred to Rhynchosauroides represent a new ichnogenus named Apachepus cottonorum igen. et isp. nov. characterized by having a pedal print that is elongate with long, narrow digits, with digit V being very shor...
تکتونیک برخوردی البرز غربی بر مبنای تغییر شکلهای ساختاری منطقه درفک - سماموس (حدفاصل سفیدرود-پل رود)
چکیده ندارد.
There is little consensus on the corporate diversification-efficiency relationship in the diversification literature. The study aims to contribute to the literature by looking jointly at two dimensions of corporate diversification as product diversification and international diversification and the relationship between them. The results show negative relationship between product diversification...
Crocodylomorphs originated in the Late Triassic and were the only crocodile-line archosaurs to survive the end-Triassic extinction. Recent phylogenetic analyses suggest that the closest relatives of these generally gracile, small-bodied taxa were a group of robust, large-bodied predators known as rauisuchids implying a problematic morphological gap between early crocodylomorphs and their closes...
Gliding adaptations in thoracopterid flying fishes represent a remarkable case of convergent evolution of overwater gliding strategy with modern exocoetid flying fishes, but the evolutionary origin of this strategy was poorly known in the thoracopterids because of lack of transitional forms. Until recently, all thoracopterids, from the Late Triassic of Austria and Italy and the Middle Triassic ...
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