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Enamel microstructure of permanent and deciduous teeth of a species of notoungulate Toxodon : Development, functional, and evolutionary implications

100%

Braunn P. R., Ferigolo J., Ribeiro A. M.

Acta Palaeontologica Polonica

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2021

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tom 66

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nr 2

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Chiroptera (Mammalia) from the Holocene of Rio Grande do Sul State, Brazil

100%

Hadler P., Ferigolo J., Ribeiro A. M.

Acta Chiropterologica

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2010

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tom 12

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nr 1

The Chiroptera do not have an extensive fossil record. To date, for the Quaternary of Brazil, only material from Minas Gerais, São Paulo, Bahia and Goiás States are known. For Rio Grande do Sul State, in contrast to the studies about the Pleistocene megafauna, little is known about Holocene small mammals, this being the first contribution about the Chiroptera of this age found in Rio Grande do Sul. The material was excavated from two archaeological sites, dating from ± 9,400 yrs BP to ± 4,250 yrs BP. The taxa recorded were: Chrotopterus auritus, Pygoderma bilabiatum (Phyllostomidae); Eptesicus brasiliensis, E. fuscus, Myotis cf. Myotis ruber, Vespertilionidae aff. Lasiurus (Vespertilionidae); Tadarida brasiliensis, and Molossus molossus (Molossidae). The presence of E. fuscus extends its Holocene distribution far southwards into the south temperate zone; its previous Quaternary occurrences were in Bahia State, Brazil, as well as in Venezuela, Mexico and the USA.

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Late Miocene potamarchine rodents from southwestern Amazonia, Brazil - with description of new taxa

88%

Kerber L., Negri F. R., Ribeiro A. M., Vucetich M. G., De Souza-Filho J. P.

Acta Palaeontologica Polonica

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2016

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tom 61

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nr 1

The fossil rodents from the southwestern Amazonia of Brazil have been studied since the first half of the 20th century. Several caviomorph rodents were reported for the Neogene of this region, mainly neoepiblemids and dinomyids. Until recently, the record of dinomyids in the Solimões Formation (Late Miocene) was predominantly based on a few isolated teeth, which made it difficult to make more accurate taxonomic identifications due to the scarcity of diagnostic characters. Here, new remains, more complete than those previously reported, of potamarchine dinomyids from the Neogene of Brazil are described. A new species of Potamarchus and a new genus and species of a Potamarchinae are erected. In addition, new material of Potamarchus murinus and Potamarchus sp. is identified. These data suggest a higher diversity of dinomyids in in the western Amazonia than previously supposed.

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New sauropodomorph and cynodont remains from the Late Triassic Sacisaurus site in southern Brazil and its stratigraphic position in the Norian Caturrita Formation

76%

Marsola J. C. A., Bittencourt J. S., Da Rosa A. A. S., Martinelli A. G., Ribeiro A. M., Ferigolo J., Langer M. C.

Acta Palaeontologica Polonica

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2018

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tom 63

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nr 4

Sacisaurus agudoensis is the only silesaurid known from the Triassic beds of the Santa Maria Supersequence and the correlation of its type locality to the other Triassic deposits of south Brazil has always been controversial. In an attempt to improve this, a handful of dinosaur and cynodont remains found associated to S. agudoensis are here described and compared. The anatomy of the sauropodomorph is more similar to that of Norian forms such as Pantydraco caducus and Unaysaurus tolentinoi than to that of Carnian taxa such as Saturnalia tupiniquim and Pampadromaeus barberenai. The cynodonts recovered based on isolated teeth include a brasilodontid and a Riograndia-like form. This assemblage is consistent with a Norian age, as is also suggested by local stratigraphic correlation, which positions the site in the Caturrita Formation.

Ograniczanie wyników

3 Acta Palaeontologica Polonica

1 Acta Chiropterologica

4 Ribeiro A. M.

3 Ferigolo J.

1 Bittencourt J. S.

1 Braunn P. R.

1 Da Rosa A. A. S.

1 De Souza-Filho J. P.

1 Hadler P.

1 Kerber L.

1 Langer M. C.

1 Marsola J. C. A.

1 Martinelli A. G.

1 Negri F. R.

1 Vucetich M. G.

1 2021

1 2018

1 2016

1 2010

Enamel microstructure of permanent and deciduous teeth of a species of notoungulate Toxodon : Development, functional, and evolutionary implications

Chiroptera (Mammalia) from the Holocene of Rio Grande do Sul State, Brazil

Late Miocene potamarchine rodents from southwestern Amazonia, Brazil - with description of new taxa

New sauropodomorph and cynodont remains from the Late Triassic Sacisaurus site in southern Brazil and its stratigraphic position in the Norian Caturrita Formation