Results 51 to 60 of about 5,518,775 (68)
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Journal of South American Earth Sciences, 2016
Abstract Although hexactinellid sponges occur exclusively in deep and/or cold waters, three species of hexactinellids have been reported from shallow and warm waters in Oligo-Miocene deposits of the Pirabas Formation in northern Brazil: Aphrocallistes estevoui, A. lobata and Manzonia aprutina .
Andrzej Pisera +2 more
exaly +3 more sources
Abstract Although hexactinellid sponges occur exclusively in deep and/or cold waters, three species of hexactinellids have been reported from shallow and warm waters in Oligo-Miocene deposits of the Pirabas Formation in northern Brazil: Aphrocallistes estevoui, A. lobata and Manzonia aprutina .
Andrzej Pisera +2 more
exaly +3 more sources
Revue De Micropaleontologie, 2011
Abstract The genera Haplocytheridea and Cytheridea have Tethyan origins and a wide paleobiogeographic and stratigraphic distribution, ranging from the Cretaceous to Recent. Both of them have been recorded in northern South America, but only Cytheridea has been found in the northern Cretaceous basins of Brazil.
A. A. E. Nogueira +2 more
exaly +3 more sources
Abstract The genera Haplocytheridea and Cytheridea have Tethyan origins and a wide paleobiogeographic and stratigraphic distribution, ranging from the Cretaceous to Recent. Both of them have been recorded in northern South America, but only Cytheridea has been found in the northern Cretaceous basins of Brazil.
A. A. E. Nogueira +2 more
exaly +3 more sources
Zootaxa, 2019
Ostracods from the Upper Oligocene to Lower Miocene Pirabas Formation, Northeastern Amazonia, Pará State, Brazil were examined from one subsurface and four outcrop sections.
A. A. E. Nogueira, M. I. Ramos, G. Hunt
semanticscholar +3 more sources
Ostracods from the Upper Oligocene to Lower Miocene Pirabas Formation, Northeastern Amazonia, Pará State, Brazil were examined from one subsurface and four outcrop sections.
A. A. E. Nogueira, M. I. Ramos, G. Hunt
semanticscholar +3 more sources
Zootaxa, 2015
The Pirabas Formation in Brazil has been studied for many years and a great diversity of animal groups (in particular fishes, molluscs and echinoderms) have been described from there, whereas the Bryozoa have scarcely been mentioned. New samples, collected specifically to focus on bryozoans, have shown that the diversity in this formation is higher ...
L. Ramalho +3 more
semanticscholar +4 more sources
The Pirabas Formation in Brazil has been studied for many years and a great diversity of animal groups (in particular fishes, molluscs and echinoderms) have been described from there, whereas the Bryozoa have scarcely been mentioned. New samples, collected specifically to focus on bryozoans, have shown that the diversity in this formation is higher ...
L. Ramalho +3 more
semanticscholar +4 more sources
, 2020
The Miocene fiddler crab Uca maracoani antiqua Brito, 1972, from the Pirabas Formation (Brazil), has been recurrently claimed to be a valid species and the oldest fossil record of the brachyuran crab family Ocypodidae.
Daniel Lima +4 more
semanticscholar +1 more source
The Miocene fiddler crab Uca maracoani antiqua Brito, 1972, from the Pirabas Formation (Brazil), has been recurrently claimed to be a valid species and the oldest fossil record of the brachyuran crab family Ocypodidae.
Daniel Lima +4 more
semanticscholar +1 more source
The Miocene carbonate–siliciclastic deposits of the Pirabas Formation (Brazilian equatorial margin) are affected by significant diagenetic processes and limited biostratigraphic resolution, resulting in persistent chronostratigraphic uncertainties. This study integrates U–Pb carbonate geochronology (LA–ICP–MS), calcareous nannofossil and palynological ...
Orangel Aguilera +13 more
openaire +1 more source
Orangel Aguilera +13 more
openaire +1 more source
Journal of Paleontology
The Indo-West Pacific region serves as the primary habitat for the majority of extant hexapodid crabs. The hexapodids boast a rich evolutionary history dating back to the Cretaceous, marked by a significant radiation throughout the Cenozoic, while the ...
Daniel Lima +3 more
semanticscholar +1 more source
The Indo-West Pacific region serves as the primary habitat for the majority of extant hexapodid crabs. The hexapodids boast a rich evolutionary history dating back to the Cretaceous, marked by a significant radiation throughout the Cenozoic, while the ...
Daniel Lima +3 more
semanticscholar +1 more source