Results 1 to 10 of about 500 (140)

An unusual pterosaur specimen (Pterodactyloidea, ?azhdarchoidea) from the early cretaceous Romualdo formation of Brazil, and the evolution of the pterodactyloid palate. [PDF]

open access: yesPLoS ONE, 2012
A new and unusual specimen of a probable azhdarchoid pterosaur is described for the Early Cretaceous (Albian) Romualdo Formation of Brazil. The specimen consists of a palate that, although fragmentary, has a unique morphology differing from all other ...
Felipe L Pinheiro, Cesar L Schultz
doaj   +7 more sources

Calcareous nannofossils, biostratigraphy, and paleobiogeography of the Aptian/Albian Romualdo Formation in the Araripe Basin, North-Eastern Brazil

open access: yesBrazilian Journal of Geology, 2023
The objectives of this study were the biostratigraphic and paleobiogeographic interpretations of the calcareous nannofossil records of the Romualdo Formation (Aptian-Albian) in the south-central portion of the Araripe Basin.
Flávia Azevedo Pedrosa Lemos   +9 more
doaj   +5 more sources

The first theropod dinosaur (Coelurosauria, Theropoda) from the base of the Romualdo Formation (Albian), Araripe Basin, Northeast Brazil [PDF]

open access: yesScientific Reports, 2020
AbstractThe Romualdo Formation (Araripe Basin) is worldwide known for the large number of well-preserved fossils but the dinosaur record is rather scarce. Here we describe a new coelurosaur, which is the first tetrapod recovered from the basal layers of this stratigraphic unit that consist of dark shales. Aratasaurus museunacionali gen. et sp. nov.
Alexander Kellner   +2 more
exaly   +5 more sources

New Cretaceous (Aptian/Albian) boxer shrimp (Crustacea, Decapoda, Stenopodidea) from the Araripe Sedimentary Basin, NE, Brazil [PDF]

open access: yesPLoS ONE, 2023
Stenopodidean shrimps are mostly cryptic in their habitats and are typically related with coral rubble or dead coral heads, rocks and crevices, and in association with other marine invertebrate such as sponges, crinoids and corals.
Damares Ribeiro Alencar   +5 more
doaj   +3 more sources

A regurgitalite reveals a new filter-feeding pterosaur from the Santana Group [PDF]

open access: yesScientific Reports
The Santana Group in Northeast Brazil has yielded a remarkable discovery: the first filter-feeding pterosaur from the tropics, named Bakiribu waridza gen. et sp. nov.
R. V. Pêgas   +5 more
doaj   +2 more sources

A forged ‘chimera’ including the second specimen of the protostegid sea turtle Santanachelys gaffneyi and shell parts of the pleurodire Araripemys from the Lower Cretaceous Santana Group of Brazil [PDF]

open access: yesSwiss Journal of Palaeontology, 2023
Fossils of Cretaceous sea turtles adapted to an open marine lifestyle remain rare finds to date. Furthermore, the relationships between extant sea turtles, chelonioids, and other Mesozoic marine turtles are still contested, with one key species being ...
Torsten M. Scheyer   +6 more
doaj   +2 more sources

The largest flying reptile from Gondwana: a new specimen of Tropeognathus cf. T. mesembrinusWellnhofer, 1987 (Pterodactyloidea, Anhangueridae) and other large pterosaurs from the Romualdo Formation, Lower Cretaceous, Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2013
A very large pterosaur (MN 6594-V) from the Romualdo Formation (Aptian/Albian), Santana Group, Araripe Basin, is described. The specimen is referred to Tropeognathus cf. T.
ALEXANDER W. A. KELLNER   +9 more
doaj   +3 more sources

Flavouring Group Evaluation 87, Revision 3 (FGE.87Rev3): Consideration of bicyclic secondary alcohols, ketones and related esters evaluated by JECFA (63rd meeting) structurally related to bicyclic secondary alcohols, ketones and related esters evaluated in FGE.47Rev1. [PDF]

open access: yesEFSA J
Abstract The Panel on Food Additives and Flavourings (FAF) of the European Food Safety Authority was requested to consider evaluations of flavouring substances assessed since 2000 by the Joint FAO/WHO Expert Committee on Food Additives (the JECFA) and to decide whether further evaluation is necessary, as laid down in Commission Regulation (EC) No. 1565/
EFSA Panel on Food Additives and Flavourings (FAF)   +21 more
europepmc   +2 more sources

Interpreting character variation in turtles: Araripemys barretoi (Pleurodira: Pelomedusoides) from the Araripe Basin, Early Cretaceous of Northeastern Brazil [PDF]

open access: yesPeerJ, 2020
The Araripe Basin (Northeastern Brazil) has yielded a rich Cretaceous fossil fauna of both vertebrates and invertebrates found mainly in the Crato and Romualdo Formations, of Aptian and Albian ages respectively.
Saulo Limaverde   +6 more
doaj   +2 more sources

A new azhdarchoid pterosaur from the Lower Cretaceous of Brazil and the paleobiogeography of the Tapejaridae [PDF]

open access: yesActa Palaeontologica Polonica, 2021
The Tapejaridae were an apparently worldwide distributed clade of edentulous pterosaurs, being a major component of several Lower Cretaceous terrestrial faunas.
Gabriela M. Cerqueira   +4 more
doaj   +1 more source

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