Microfossil sampling benthic foraminiferans from the mudstone accumulated inside this 4-5 million year old Tresus pajaroanus clam. Benthic Foraminiferans are microscopic Protists that live on or in the the bottom sediments and are usually marine. Typically Forams are not well-preserved in sandstone here in the Purisima Formation. However, the fine mud and silt sediments that accumulated inside fossil clams such as this one often have a higher percentage of Forams preserved in them. Eastern Pacific Pliocene foraminifera are not well-studied and hopefully this project will add to our understanding of local environmental conditions and allow us to place the Purisima formation here within the larger biochronological framework.
Friday, June 10, 2022
Microfossil sampling benthic foraminiferans...
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