#Zoom it peter tooch update#
Now we all must update our lectures on bryozoans and the Cambrian radiation! Andrej Ernst and I wrote a Nature News & Views article about this fantastic story. Its taxonomic name is Protomelission gatehousei. (Note that friend of the department Paul Taylor is among the authors.) The new bryozoan fossil is erect, bilaminate, and secondarily phosphatized. Fossil evidence unveils an early Cambrian origin for Bryozoa. P.D., Strotz, L.C., Jacquet, S.M., Skovsted, C.B., Chen, F., Han, J. The fossil described in this old post is almost certainly not a bryozoan, but NOW a recent publication describes clear and distinct bryozoans from the Early Cambrian of Australia and South China: Zhang, Z., Zhang, Z., Ma, J., Taylor. This would have been a major find because bryozoans, a major fossilized phylum, were notably missing from the Cambrian record, despite molecular evidence that they must have been there. ( )Įditor’s Note: The post below was written in December 2012 about a purported bryozoan found in Cambrian rocks. Ooimmuration: Enhanced fossil preservation by ooids, with examples from the Middle Jurassic of southwestern Utah, USA. Now go forth and find more examples of ooimmuration! We describe as examples of ooimmuration fossils preserved in an oolite from the Middle Jurassic (Bajocian) Carmel Formation in southwestern Utah. Many taxa in some fossil assemblages may be known only because they were ooimmured.
Fossils enclosed within ooids are protected from bioerosion as well as the abrasion common in energetic depositional environments such as ooid shoals.
It is a form of lithoimmuration, although depending on the role of microbes in the formation of the ooid cortex, ooimmuration can also be considered a type of bioimmuration. The abstract: Ooimmuration is here defined as a taphonomic process by which fossils are preserved within ooids. Fossils are inside these ooids, most notably a calcareous foraminiferan in the center. The image above shows a microscopic view of a thin-section cut through Carmel ooids. The fieldwork for this project was done primarily on the Team Utah 2019 Expedition to the Middle Jurassic Carmel Formation exposed north of St. The team of authors include me, Anna Cooke (’20), fellow Wooster Professor Shelley Judge, and ace paleontologist Dr. I’m pleased to announce the publication of an article describing how fossils can be preserved within carbonate ooids, and what the implications are for this new aspect of taphonomy (the study of fossil preservation) we call ooimmuration.
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