The Permian Tiaraju bivalve assemblage, Passa Dois Group, southern Brazil: biostratigraphic and paleobiogeographic significance
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منابع مشابه
The African cynodont Aleodon (Cynodontia, Probainognathia) in the Triassic of southern Brazil and its biostratigraphic significance
In this contribution we report the first occurrence of the enigmatic African probainognathian genus Aleodon in the Middle-early Late Triassic of several localities from the state of Rio Grande do Sul in southern Brazil. Aleodon is unusual among early probainognathians in having transversely-expanded postcanine teeth, similar to those of gomphodont cynognathians. This genus was previously known ...
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The aim of this work was to determine the composition of the fish assemblage of Passa Cinco stream and verify changes in their structure on the altitudinal gradient. Six samples were performed at five different sites in Passa Cinco stream (from the headwater, at order two, to its mouth, at order six), using an electric fishery equipment and gill nets in May, July, September and November of 2005...
متن کامل(Eucynodontia, Tritheledontidae) from the Late Triassic of southern Brazil: anatomical and biostratigraphic implications
The tritheledontid Riograndia guaibensis was the first cynodont described for the “Caturrita Formation” fauna from the Late Triassic of southern Brazil (Santa Maria 2 Sequence). The type materials did not preserve anatomical information regarding braincase, occiput, basicranium, zygomatic arch, postdentary bones and craniomandibular joint. Here new materials are described and supply the missing...
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Jurassic Favusellidae 1 2 3 a b 1 2 a b 3 a 1 b 2 3 1 2 1 1 1 2 3 2 2 3 2 4 1 3 4 a b 1 2 3 1 2 1 2 a b b a a b b a b a Praehedbergellidae Hedbergellidae a b 3 b a a b
متن کاملTiming of recovery from the end-Permian extinction: Geochronologic and biostratigraphic constraints from south China
Four volcanic-ash beds bracket the Early-Middle Triassic boundary, as defined by conodont biostratigraphy, in a stratigraphic section in south China. High-precision U-Pb dates of single zircons allow us to place the Early to Middle Triassic (Olenekian-Anisian) boundary at 247.2 Ma. Magnetic-reversal stratigraphy allows global correlation. The new dates constrain the Early Triassic interval char...
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ژورنال
عنوان ژورنال: Brazilian Journal of Geology
سال: 2017
ISSN: 2317-4889
DOI: 10.1590/2317-4889201720170013