La hisotria de la introducción de la rata almizclera en el antiguo Territorio de Tierra del Fuego... more La hisotria de la introducción de la rata almizclera en el antiguo Territorio de Tierra del Fuego, a fines de la dñécada de 1940-
Isolated teeth representing an indeterminate species of the batoid hypsobatid genus Angolabatis a... more Isolated teeth representing an indeterminate species of the batoid hypsobatid genus Angolabatis are described. The specimens come from the Late Cretaceous (Campanian-Maastrichtian) deposits of the Allen Formation at northern Patagonia, Río Negro province, Argentina. It constitutes the first record of the family in South America, and the first record of Angolabatis outside Africa, being an important addition to Mesozoic ichthyofaunas of the continent.
Corydoras polystictus has been reported for Argentina only from the records published by Lüling i... more Corydoras polystictus has been reported for Argentina only from the records published by Lüling in 1980 and 1982 from the río Gualeguay, an affluent of the lower río Paraná in the province of Entre Ríos. This author stated that the distribution of this species in Argentina would be linked to the middle and lower río Paraná basin. In this note, we provide the first Argentinean records from the río Paraná basin in the province of Misiones.
Papéis Avulsos de Zoologia (São Paulo), Jan 1, 2011
Two fossil crania referable to the siluriform fish family Ariidae are described. The specimens co... more Two fossil crania referable to the siluriform fish family Ariidae are described. The specimens come from the Early Late Miocene-Lower Middle Miocene Saladar Member of the Gran Bajo del Gualicho Formation, located at Salinas del Gualicho, Río Negro province, Argentina. The materials are referred to a new species of the recent genus Genidens. The new taxon is distinguished from remaining living species in having a very short, broadened and rounded supraoccipital process, subrounded extrascapular and wide mesethmoid with a median notch, flat frontals, and straight lateral margins of the sphenotics. Genidens ancestralis sp. nov. represents the oldest (and only known) fossil record for the genus, and constitutes a relatively small-sized species, very similar in general traits to living forms of Genidens.
La hisotria de la introducción de la rata almizclera en el antiguo Territorio de Tierra del Fuego... more La hisotria de la introducción de la rata almizclera en el antiguo Territorio de Tierra del Fuego, a fines de la dñécada de 1940-
Isolated teeth representing an indeterminate species of the batoid hypsobatid genus Angolabatis a... more Isolated teeth representing an indeterminate species of the batoid hypsobatid genus Angolabatis are described. The specimens come from the Late Cretaceous (Campanian-Maastrichtian) deposits of the Allen Formation at northern Patagonia, Río Negro province, Argentina. It constitutes the first record of the family in South America, and the first record of Angolabatis outside Africa, being an important addition to Mesozoic ichthyofaunas of the continent.
Corydoras polystictus has been reported for Argentina only from the records published by Lüling i... more Corydoras polystictus has been reported for Argentina only from the records published by Lüling in 1980 and 1982 from the río Gualeguay, an affluent of the lower río Paraná in the province of Entre Ríos. This author stated that the distribution of this species in Argentina would be linked to the middle and lower río Paraná basin. In this note, we provide the first Argentinean records from the río Paraná basin in the province of Misiones.
Papéis Avulsos de Zoologia (São Paulo), Jan 1, 2011
Two fossil crania referable to the siluriform fish family Ariidae are described. The specimens co... more Two fossil crania referable to the siluriform fish family Ariidae are described. The specimens come from the Early Late Miocene-Lower Middle Miocene Saladar Member of the Gran Bajo del Gualicho Formation, located at Salinas del Gualicho, Río Negro province, Argentina. The materials are referred to a new species of the recent genus Genidens. The new taxon is distinguished from remaining living species in having a very short, broadened and rounded supraoccipital process, subrounded extrascapular and wide mesethmoid with a median notch, flat frontals, and straight lateral margins of the sphenotics. Genidens ancestralis sp. nov. represents the oldest (and only known) fossil record for the genus, and constitutes a relatively small-sized species, very similar in general traits to living forms of Genidens.
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Papers by Sergio Bogan
1980 and 1982 from the río Gualeguay, an affluent of the lower río Paraná in the province of Entre
Ríos. This author stated that the distribution of this species in Argentina would be linked to the middle
and lower río Paraná basin. In this note, we provide the first Argentinean records from the río Paraná
basin in the province of Misiones.
1980 and 1982 from the río Gualeguay, an affluent of the lower río Paraná in the province of Entre
Ríos. This author stated that the distribution of this species in Argentina would be linked to the middle
and lower río Paraná basin. In this note, we provide the first Argentinean records from the río Paraná
basin in the province of Misiones.