Palaeoecology of Late Triassic conodonts: Constraints from oxygen isotopes in biogenic apatite.

Rigo M, Joachimski M (2010)


Publication Type: Journal article

Publication year: 2010

Journal

Publisher: Polska Akademia Nauk, Instytut Paleobiologi (Polish Academy of Sciences, Institue of Paleobiology)

Book Volume: 55

Pages Range: 471-478

DOI: 10.4202/app.2009.0100

Abstract

The oxygen isotopic composition of conodont apatite derived from the Late Triassic (Carnian to lower Norian), Pignola 2 and Sasso di Castalda sections in the Lagonegro Basin (Southern Apennines, Italy) was studied in order to constrain the habitat of Late Triassic conodont animals. Oxygen isotope ratios of conodonts range from 18.5 to 20.8‰ V-SMOW, which translate to palaeotemperatures ranging from 22 to 31°C, assuming a δ 18O of Triassic subtropical sea water of -0.12‰ V-SMOW. These warm temperatures, which are well comparable to those of modern subtropical-tropical oceans, along with the body features of the conodont animal suggest that conodont 1 δ8O values reflect surface water temperatures, that the studied conodont taxa lived in near-surface waters, and that δ 18O values of Late Triassic conodonts can be used for palaeoclimatic reconstructions.

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APA:

Rigo, M., & Joachimski, M. (2010). Palaeoecology of Late Triassic conodonts: Constraints from oxygen isotopes in biogenic apatite. Acta Palaeontologica Polonica, 55, 471-478. https://dx.doi.org/10.4202/app.2009.0100

MLA:

Rigo, Manuel, and Michael Joachimski. "Palaeoecology of Late Triassic conodonts: Constraints from oxygen isotopes in biogenic apatite." Acta Palaeontologica Polonica 55 (2010): 471-478.

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