RT Journal Article
T1 On the Occurrence of the Gar Obaichthys africanus Grande in the Cretaceous of Portugal: Palaeoecological and Palaeobiogeographical Implications
A1 Pimentel, Ricardo
A1 Barroso Barcenilla, Fernando
A1 Berrocal Casero, Melani
A1 Callapez, Pedro Miguel
A1 Ozkaya de Juanas, Senay Amalia
A1 Dos Santos, Vanda
AB Several disarticulated fish scales and a vertebral centrum were collected from the uppermost middle to lowermost upper Cenomanian beds of the vertebrate fossil site of Casais dos Carecos (Baixo Mondego region, Coimbra, West Portugal), corresponding to shallow carbonate and mixed facies (“Unit B”) of the Tentúgal Formation. The taphonomic preservation of these remains is adequate for their detailed taxonomical study. The scales are diagnosable for the species Obaichthys africanus Grande, as each one has a strong spine protruding from the middle of the posterior border in a rostrocaudal direction, a dorsoventral peg and socket, and a small anterodorsal process for articulation of adjacent scales. The sculpture with ganoid ridges and grooves distinguishes the studied remains from those of O. decoratus Wenz and Brito, which display rounded tubercles. The isolated Lepisosteoidea centrum is tentatively attributed to O. africanus as well, as it was found together with the scales, and no other compatible remains were found in the site. The fish material reported here constitutes the first record of O. africanus in the Baixo Mondego region and northern ranges of the Albian–Turonian West Portuguese Carbonate Platform, as well as in the uppermost middle to basal upper Cenomanian of Portugal.
PB MDPI
YR 2023
FD 2023
LK https://hdl.handle.net/20.500.14352/99686
UL https://hdl.handle.net/20.500.14352/99686
LA eng
NO Pimentel, Ricardo, et al. «On the Occurrence of the Gar Obaichthys Africanus Grande in the Cretaceous of Portugal: Palaeoecological and Palaeobiogeographical Implications». Geosciences, vol. 13, n.o 12, diciembre de 2023, p. 372. https://doi.org/10.3390/geosciences13120372.
NO Universidad Complutense de Madrid
NO Fundação para a Ciência e a Tecnología (Portugal)
NO Junta de Castilla-La Mancha
NO Universidad de Alcalá
DS Docta Complutense
RD 22 abr 2025