Petalodus ohioensis XIII

Catalog Number: CG-0087

This is the first specimen of Petalodus ohioensis I have recovered from Pine Creek Limestone. Specimens of Petalodus can be found in marine zones throughout the Glenshaw Formation, so finding one here is no surprise. However through several trips to the locality, which is around 10 miles North East from our own local section, I’ve never found any evidence of P. ohioensis there until yesterday (July 11, 2020).

Specimen in-situ in larger piece of Pine Creek Limestone

In reducing the boulder into smaller pieces, one such break revealed this dark black tooth brown. Most specimens recovered have a bright silver to white color. However, the coloring here was not unusual. With the high organic content within the rocks, this is not unusual to find anything colored black within.

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Photos of the Specimen freed

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Catalog ID	Specimen Name	Crown Height	Crown Width
CG-0015	Petalodus I	6mm	23mm
CG-0016	Petalodus II	9.5mm	24mm*
CG-0029	Petalodus III	8mm	28mm*
CG-0027	Petalodus IV	10.5mm	**
CG-0034	Petalodus V	14mm	27mm*
CG-0038	Petalodus VI	5.5mm***	**
CG-0045	Petalodus VII	10mm	25mm
CG-0047	Petalodus VIII	13mm	31mm
CG-0048	Petalodus IX	****	**
CG-0055	Petalodus X	11mm†	28mm
CG-0058	Petalodus XI	8mm†	27mm
CG-0070	Petalodus XII	****	**
CG-0087	Petalodus XIII	9mm	23mm
CG-0102	Petalodus XIV	Coming Soon	Coming Soon
CG-0107	Petalodus XV	Coming Soon	Coming Soon