194 D18. Paleontology: Diversity, Extinction, Origination (Posters)

Tuesday, 24 September 2019
9:00 AM - 6:30 PM
Hall AB, North Building

MAZON CREEK SHARKS AND THEIR EGG CASES

Paper number: 194-7
Program: Technical Sessions
Time: 9:00 AM – 6:30 PM

Authors

Abstract

Sharks are an un-common element in the classic Mazon Creek lagerstatte (Braidwood and Essex faunas). Shark egg cases (Paleoxyris, Fayolia and Vetacapsula) are also found in various degrees of rarity. We offer photographic documentation of several never-before illustrated specimens of Bandringa, Vetacapsula and Fayolia. We hypothesize that nodule size may have acted as a filter to exclude most of the larger adult sharks. We will also illustrate photos of a cast by Dr. Donald Baird of a large and unusual shark head from Mazon Creek that remains undescribed.

Geological Society of America Abstracts with Programs. Vol. 51, No. 5

doi: 10.1130/abs/2019AM-333504

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