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Report Fossil
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By sixgill pete
Sand Dollar
Kingdom: Animalia
Eon: Phanerozoic
Era: Cenozoic
Period: Paleogene
Sub Period: None
Epoch: Eocene
International Age: Priabonian
Castle Hayne Formation
Comfort Member
Collector: Don Rideout
Date Collected: 11/07/2014
Acquired by: Field Collection
Length: 25.7 mm
Width: 24.8 mm
Thickness: 3.6 mm
Martin Marietta Quarry
New Hanover County
North Carilina
United States
Collected at the Martin Marietta Castle Hayne Quarry. This is a very common find, though most are limestone or marl encrusted or broken. P. lyelli is found in Zullo & Harris, 1987 sequence 4 of the Castle Hayne (Kier, 1980 middle to late biozone). A very similar species; Periarchus sp. is found in Sequence 3. P. lyelli is most easily identified and differentiated from Protoscutella and Periarchus sp. by the placement of the periproct. The periproct is located slightly above the central point between the peristome and the posterior margin of the test.
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