Thelodont scales from the Middle-Late Devonian Aztec Siltstone, southern Victoria Land, Antarctica

A new fossil agnathan, Turinia antarctica sp. nov., based on numerous isolated scales, comes from the lower fish-bearing beds of the Aztec Siltstone. Scales from moraine at Mount Suess, originally described as selachian or psammosteid heterostracan, are referred to the new species which shows close...

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Bibliographic Details
Published in:Antarctic Science
Main Authors: Turner, S., Young, G. C.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1992
Subjects:
Geology
Ecology, Evolution, Behavior and Systematics
Oceanography
Mount Suess
Victoria Land
Antarc*
Antarctic Science
Antarctica
Online Access:http://dx.doi.org/10.1017/s0954102092000142
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102092000142
Description
Summary:A new fossil agnathan, Turinia antarctica sp. nov., based on numerous isolated scales, comes from the lower fish-bearing beds of the Aztec Siltstone. Scales from moraine at Mount Suess, originally described as selachian or psammosteid heterostracan, are referred to the new species which shows close affinity with T. gondwana from Bolivia and T. cf. hutkensis from Iran. Reassessment of the biostratigraphy of Middle Devonian turiniid scales suggests that the lower part of the Aztec Siltstone may be of Eifelian age.

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