File:Teredolites bivalve borings in fossil conifer wood (Windalia Radiolarite, Lower Cretaceous; Mooka Creek area, Kennedy Ranges, Western Australia) (32535818074).jpg

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Bivalve borings in fossil wood from the Cretaceous of Australia. (public display, Gorman Nature Center, Mansfield, Ohio, USA)

The dark material in the fossil is quartz-permineralized, araucariacean conifer wood. The rounded and elongated areas within the wood are borings (drill holes) called Teredolites. The borings were made by "shipworm" bivalves that specialize in drilling into wood (see: <a href="https://en.wikipedia.org/wiki/Teredo_navalis" rel="nofollow">en.wikipedia.org/wiki/Teredo_navalis</a>). The light-colored fill in the borings is radiolarite, a siliceous sedimentary rock formed by lithification of radiolarian-rich sediments. (see: <a href="https://en.wikipedia.org/wiki/Radiolaria" rel="nofollow">en.wikipedia.org/wiki/Radiolaria</a>). The host rock for the fossil wood is radiolarite.

Rockhounds call this material "peanut wood".

Classification of trace makers: Animalia, Mollusca, Bivalvia, Heterodonta, Myoida, Teredinidae

Classification of wood: Plantae, Pinophyta, Pinopsida, Pinales, Araucariaceae

Stratigraphy: Windalia Radiolarite, Aptian to Albian Stages, upper Lower Cretaceous

Locality: Mooka Creek area, Kennedy Ranges, Western Australia
Date
Source Teredolites bivalve borings in fossil conifer wood (Windalia Radiolarite, Lower Cretaceous; Mooka Creek area, Kennedy Ranges, Western Australia)
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/32535818074 (archive). It was reviewed on 1 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

1 December 2019

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current08:59, 1 December 2019Thumbnail for version as of 08:59, 1 December 20192,210 × 1,363 (2.27 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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