REAL

Remarks on the Astarte Bed (Upper Bajocian, Middle Jurassic) of Burton Bradstock (Dorset, Southern England)

Chandler, Robert B. and Dietze, Volker and Sommer, Volker and Gauthier, Henri (2001) Remarks on the Astarte Bed (Upper Bajocian, Middle Jurassic) of Burton Bradstock (Dorset, Southern England). Hantkeniana, 3. pp. 5-23. ISSN 1219-3933

[img]
Preview
Text
5-23_Hantkeniana_3_2001.pdf

Download (5MB) | Preview

Abstract

The Astarte obliqua Bed of the Burton Bradstock district is subjected to detailed biostratigraphical examination. The bed is divisible by lithology and palaeontology into several horizons. However, the entire succession is not present at any of the closely spaced localities sampled, probably owing to local synsedimentary tectonics and penecontemporaneous erosion. At all the places sampled the entire bed probably belongs to the Acris Subzone of the Garantiana Zone of the Upper Bajocian. The lowest part of the bed contains an Acris Subzone ammonite fauna. With this are derived specimens, and rare wellpreserved morphospecies that normally typify earlier strata ranging down to the Dichotoma Subzone. These specimens may represent an earlier age or be lingering ancestral morphs persisting into the Acris Subzone assemblage. A preliminary assessment of the taphonomic status of the fauna is also made.

Item Type: Article
Subjects: Q Science / természettudomány > QH Natural history / természetrajz > QH526 Paleontology / őslénytan
Depositing User: Zsolt Baráth
Date Deposited: 27 Jan 2023 08:35
Last Modified: 27 Jan 2023 08:35
URI: http://real.mtak.hu/id/eprint/156432

Actions (login required)

Edit Item Edit Item