Palynology and paleoenvironment of the “Faja Gris”; mealla formation (Salta Group) at Garabatal Creek (NW Argentina)

Quattrocchio, Mirta Elena; Volkheimer, Wolfgang; Papa, Cecilia del

doi:10.1080/01916122.1997.9989498

Cited by 31 publications

(25 citation statements)

References 6 publications

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“…Character 'l' is an unique autapomorphy, characters '2', '10', '11', '12', '13' are autapomorphies convergently present in some Libellulidae but strictly absent in more basal Brachystigmata. (Volkheimer et al 1984;Marshall et al 1997;Quattrocchio et al 1997).…”

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confidence: 99%

A new libelluloid family from the Upper Paleocene of Argentina

1999

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confidence: 99%

A new libelluloid family from the Upper Paleocene of Argentina

1999

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“…Th e higher classifi cation of fossil and extant Odonatoptera, as well as familial and generic characters followed in the present work are based on the phylogenetic system proposed by Bechly (1996). (Volkheimer et al 1984;Quattrocchio et al 1997). Description.…”

Section: Methodsmentioning

confidence: 99%

Enigmatic and little known Odonata (Insecta) from the Paleogene of Patagonia and Northwest Argentina

Petrulevičius

Nel

2007

Annales de la Société entomologique de France (N.S.)

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Abstract. The fi ndings of new specimens of Latibasaliidae and Frengueliidae in Northwest and Patagonia Argentina are noteworthy for the knowledge of these little know families and the explanation of their systematic position. The new fi ndings confi rm the phylogenetic position of these families. The morphology of the discoidal cell in both fore and hind wings of Frenguelia corresponds to the most basal epiproctophoran damsel-dragonfl ies, implying a Triassic age for the particular lineage of this family. The absence of any fossil record between Triassic and Eocene could be related to a highly specialized biology for these animals, maybe related to mountain rainforests as for Epiophlebia, unique surviving damsel-dragonfl y.

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“…Among the most significant species are Longapertites patagonicus, in Argentina related to Danian deposits of Chubut Province (Archangelsky, 1973) and the oldest records in the Maastrichtian of the same province (Baldoni, 1992;Baldoni & Askin, 1993); Proteacidites subscabratus, defined in New Zealand for the Oligocene, and recognized in Argentina and the Antarctic in the Maastrichtian-Danian; Senipites tercrassata, defined for the Paleocene of Argentina (Archangelsky, 1973); Beaupreaidites elegansiformis, also distributed in the Campanian-Maastrichtian of Australia, the Antarctic and New Zealand (Dettmann & Jarzen, 1988;Cookson, 1950); Ilexpollenites salamanquensis, recognized from the Upper Cretaceous of New Zealand (Mc Intyre, 1968) and recorded from the Paleocene of Argentina (Archangelsky & Zamaloa, 1986); Liliacidites vermireticulatus, defined in Argentina and distributed from the lower Paleocene (Archangelsky & Zamaloa, 1986;Mautino & Anzótegui, 2002); Tricolpites bibaculatus, defined and distributed in the Paleocene of Argentina (Archangelsky & Zamaloa, 1986;Quattrocchio et al, 1997); and Quadraplanus brossus, recognized primarily in Australia with a very restricted acme to the upper Maastrichtian-basal Danian? (Stover & Partridge, 1973;Helby et al, 1987).…”

Section: Assemblagementioning

confidence: 99%

Palynostratigraphy of the Cretaceous–Paleogene in the Austral Basin, SW Santa Cruz Province, Argentina

Povilauskas¹

2017

Rev. bras. paleontol.

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-This paper analyses the palynological assemblages recovered from the Cerro Cazador and Monte Chico formations and is an exhaustive study of the spore-pollen assemblages from the Cerro Dorotea Formation; all units with outcrops out in southwestern Santa Cruz Province, Argentina. Six sections were sampled in two main areas: Estancia San José and Estancia Laguna Salada. The palynological assemblages yielded by the studied formations are integrated with elements of marine (dinoflagellate cysts and acritarchs) and continental (spores and pollen grains) origin, present in different proportions throughout these units. Forty one species of pollen grains and spores were recognized in the Cerro Cazador Formation, 74 genera and 127 species in the Monte Chico Formation and 64 genera and 107 species in the Cerro Dorotea Formation. On the basis of the stratigraphic distribution of the identified species, four palynological assemblages were recognized, which were defined by the exclusive presence of characteristic species and their similarities with other spore-pollen assemblages. The following ages were suggested: (i) Association 1, upper sections of the Cerro Cazador Formation: upper Campanian-lower Maastrichtian; (ii) Association 2, lower and middle levels of the Monte Chico Formation: Maastrichtian, probably upper Maastrichtian; (iii) Association 3, upper levels of the Monte Chico Formation: Maastrichtian-Danian; and (iv) Association 4, Cerro Dorotea Formation: Danian. Based on this analysis, the K/P boundary is located between Associations 2 and 3, within the Monte Chico Formation. These palynological assemblages indicate a near-shore marine depositional environment close to the coastline, with marginal conditions, and a progressive shallowing of the basin.

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Palynology and paleoenvironment of the “Faja Gris”; mealla formation (Salta Group) at Garabatal Creek (NW Argentina)

Cited by 31 publications

References 6 publications

A new libelluloid family from the Upper Paleocene of Argentina

A new libelluloid family from the Upper Paleocene of Argentina

Enigmatic and little known Odonata (Insecta) from the Paleogene of Patagonia and Northwest Argentina

Palynostratigraphy of the Cretaceous–Paleogene in the Austral Basin, SW Santa Cruz Province, Argentina

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