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Fin d'un mythe géologique moderne: Il n'y a pas de rudistes au Brésil! et ses implications paléobiogéographiques
(2015-07-14)
Out of the few records of rudists from the Cretaceous strata of the South Atlantic coastal basins only two refer to Brazilian localities. However, petrographic analyses demonstrate that these shells should be assigned to ...
End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implications
(Carnets Geologie, 2015-07-14)
Out of the few records of rudists from the Cretaceous strata of the South Atlantic coastal basins only two refer to Brazilian localities. However, petrographic analyses demonstrate that these shells should be assigned to ...
Uso da alga Lithothamnium calcareum como fonte alternativa de cálcio nas rações de frangos de corte
(Editora da Universidade Federal de Lavras (UFLA), 2011-08-01)
Objetivou-se, com este trabalho, avaliar o uso da alga Lithothamnium calcareum (Pallas) Areschoug nas rações para frangos de corte de 1 a 21 e 21 a 42 dias de idade, em substituição à fonte de cálcio tradicional (calcário ...
Biogenic calcareous growth on the ribbed mussel Aulacomya atra (Bivalvia: Mytilidae) favours polydorid boring (Polychaeta: Spionidae)
(Springer, 2015-09)
Shells of the ribbed mussel Aulacomya atra from the Patagonian gulfs of San Matı´as and San<br />Jose´ (Argentina) are commonly bored by polydorids and covered by serpulids and crustose coralline algae. As the co-occurring ...
A new mid-Cretaceous Neomeris (dasycladacean alga) from the Potiguar Basin, Brazil
(2013-08-06)
Neomeris (Lamouroux, 1816) is an extant taxon, the origin of which can be tracked back into Early Cretaceous times. The introduction of a new mid-Cretaceous species from Brazil, i.e., Neomeris srivastavai n. sp., offers ...
Ecology and morphological characterization of gametophyte and 'Chantransia' stages of Sirodotia huillensis (Batrachospermales, Rhodophyta) from a stream in central Mexico
(2006-06-01)
The morphology and phenology of Sirodotia huillensis was evaluated seasonally in a central Mexican first-order calcareous stream. Water temperature was constant (24-25°C) and pH circumneutral to alkaline (6.7-7.9), and ...
Occurrence of tetrasporangia in ceramium bisporum (ceramiales, rhodophyta)
(Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Biología, 2014-02-26)
The presence of tetrahedrally divided tatrasporangia in Ceramium bisporum Ballantine is reported for the first time. The plant was found as epiphytic on calcareous Halimeda tuna in coral reef environment in Caribbean ...
Modern non-tropical mixed carbonate-siliciclastic sediments and environments of the southwestern Gulf of California, Mexico
(Sedimentary Geology, 2004)
Modern mixed carbonate-siliciclastic warm-temperate environments were studied in the southern Gulf of California (GOC), Mexico. The combined heterozoan and photozoan character is defined by the absence of true coral reef ...
Late Quaternary lacustrine ostracods (Ostracoda, Crustacea) and charophytes (Charophyta, Charales) from the Puna Plateau, Argentina
(Geological Soc Publ House, 2016-01-04)
Relatively little is known about the recent palaeontological records of the high-altitude closed basin lakes of the Central Andes, but a great need exists to remedy this knowledge gap if microfossils are to be used to infer ...
Los foraminíferos y minerales antigénicos de la formación umir (sección quebrada la julia, valle medio del magdalena): registro de una laguna costera a finales del cretácico superior (maestrichtiano)
(Departamento de Geociencias, 1993)
El hallazgo de una abundante asociación microfaunística representada principalmente por foraminíferos y en menor proporción por ostrácodos, algas calcáreas y dientes de peces junto con un rico y variado conjunto de minerales ...