Palynostratigraphy of dinosaur bone-bearing deposits from the Upper Cretaceous of Western Bulgaria

• Autorzy: Pavlishina Polina , Dochev Docho , Nikolov Vladimir , Yaneva Marlena , Konyovska Ralitsa

Identyfikatory

DOI

10.24425/agp.2019.126443

• Języki publikacji: EN

Abstrakty

EN

Palynological investigation of the Vrabchov dol locality (Western Bulgaria) which recently yielded fragmentary dinosaur bones attributed to the clade Titanosauria, reveals well-preserved sporomorph assemblages dominated by angiosperm pollen from the Normapolles group, spores and rare gymnosperms. The age assessment of the studied sequence is based on the diagnostic Normapolles species, such as Oculopollis orbicularis Góczán, 1964, Oculopollis zaklinskaiae Góczán, 1964, Krutzschipollis spatiosus Góczán in Góczán et al., 1967 and Krutzschipollis crassus (Góczán, 1964) Góczán in Góczán et al., 1967. The concurrent presence of these pollen species suggests a late Santonian–early Campanian age for the succession. The sporomorph association is encountered in a palynofacies dominated by continental elements, including translucent phytoclasts (tissues, wood remains and plant cuticles). The sedimentary succession shows no evidence of marine elements and a very low proportion of AOM that attests to deposition within a lagoonal to foreshore marine environment, with high continental input and short transportation. The vegetation in the studied area was primarily composed of a range of Normapolles-producing angiosperms and secondarily of pteridophyte spore-producing plants. Gymnosperms were rare. Such a vegetation pattern reflects a warm, seasonally dry climate during the late Santonian–earliest Campanian in the studied area. The dinosaurs inhabited a wet lowland area, probably rich in herbaceous plants.

Słowa kluczowe

EN

palynology; Normapolles; Titanosauria; Santonian; Campanian; palaeoecology

PL

palinologia; tytanozaury; santon; kampan; paleoekologia

• Wydawca: Faculty of Geology of the University of Warsaw ; Komitet Nauk Geologicznych PAN
• Czasopismo: Acta Geologica Polonica
• Rocznik: 2019
• Tom: Vol. 69, no. 4
• Strony: 617--626
• Opis fizyczny: Bibliogr. 46 poz., rys.

Twórcy

autor

Pavlishina Polina

• Sofia University “St. Kliment Ohridski”, Department of Geology, Palaeontology and Fossil Fuels, 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria

autor

Dochev Docho

• Sofia University “St. Kliment Ohridski”, Department of Geology, Palaeontology and Fossil Fuels, 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria

autor

Nikolov Vladimir

• National Museum of Natural History, 1 Tsar Osvoboditel Blvd., 1000 Sofia, Bulgaria

autor

Yaneva Marlena

• Geological Institute, Bulg. Acad. Sci., Department Earthquake Geology, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

autor

Konyovska Ralitsa

• National Museum of Natural History, 1 Tsar Osvoboditel Blvd., 1000 Sofia, Bulgaria

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).