Hettangian tetrapod burrows from the continental Steierdorf Formation at Anina, western Romania

• Autorzy: Csiki-Sava Z. , Kedzior A. , Pienkowski G. , Popa M. E.

Identyfikatory

DOI

10.7306/gq.1278

• Języki publikacji: EN

Abstrakty

EN

Very large, sparsely distributed, sinuous, gently dipping and occasionally branching tunnels with subordinate swells, as well as possible chambers and scratches, are described from the Hettangian Dealul Budinic Member of the Lower Jurassic continental Steierdorf Formation at Anina in the South Carpathians, Romania, and are interpreted as tetrapod burrows. No bone remains have been found in association with these structures. The morphology and large dimensions of the burrows suggest that the trace-makers were sauropsid amniotes, most probably either crocodyliforms or small-sized basal neornithischian dinosaurs, although their therapsid affinities, despite being less likely, cannot be discarded either. The age, large size and probable origin of these burrows add important information to a poorly documented period of the evolution of tetrapod fossoriality. It may be suggested that within a relatively short time interval following the Triassic-Jurassic extinction event, when environmental conditions were still marked by strongly seasonal climate with prolonged droughts as well as extreme moisture and temperature fluctuations, fossorial habit probably became yet again an endurance strategy for burrow makers.

Słowa kluczowe

EN

tetrapod burrows; therapsids; crocodyliforms; dinosaurs; Lower Hettangian; Steierdorf Formation

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Geological Quarterly
• Rocznik: 2016
• Tom: Vol. 60, No. 2
• Strony: 395--406
• Opis fizyczny: Bibliogr. 104 poz., fot., rys., tab.

Twórcy

autor

Csiki-Sava Z.

• University of Bucharest, Faculty of Geology and Geophysics, Laboratory of Palaeontology, 1, N. Bălcescu Ave., 010041, Bucharest, Romania

autor

Kedzior A.

• Polish Academy of Sciences, Institute of Geological Sciences, Kraków Research Centre, Senacka 1, 31 -002 Kraków, Poland

autor

Pienkowski G.

• Polish Geological Institute - National Research Institute, Rakowiecka 4, 00-975 Warszawa, Poland

autor

Popa M. E.

• University of Bucharest, Faculty of Geology and Geophysics, Laboratory of Palaeontology, 1, N. Bălcescu Ave., 010041, Bucharest, Romania

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.