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Thanks, I'm baffled by these except what looks like a Dipluera cephalon partial , last photo. Collected yesterday, near Milford Pa. Gordon

M1.jpg.69483de7aa1f0fd4c645c30121bd9d36.jpg

Below, these part of a single piece. Closeup of patternM2.jpg.16f9434328bae8df0abd0c4e7c4af1c7.jpgM2a.jpg.2a3e35fded581ac3abf97fc62a658bb2.jpg

Two views belowM3a.thumb.jpg.2981171c339c52126355ca94751a4806.jpgM3b.jpg.26ac8a0aa6fd84870ec5c85c03c7d374.jpg

Note center horizontal segmentedM4.jpg.87d25e00bb1a081c2e2bd797994ecf2d.jpg

Partial cephalon5b2d3b64e0800_M5Dipluera.jpg.836683a3188fa5d05465e7ad021359f1.jpg

 

 

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The middle photo is a Dipleura thorax and pygidium and I agree that the bottom photo is a partial Dipleura cephalon. The others I'm not sure about.

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The trilobites are all Dipleura dekayi.  The others appear to match with: Fenestella cf. emaciata

 

 

Ellison, R.L. 1965
Stratigraphy and Paleontology of the Mahantango Formation in south-central Pennsylvania.
Pennsylvania Geological Survey, Fourth Series Bulletin, G48:1-298

 

image.thumb.png.a6b8ee80b33810d575d5e5c610b5bcc2.png

 

4-8 Fenestella cf. emaciata Hall
4. External mold of back of zoarium having relatively large fenestrules; x2.  Upper part of upper shale member at New Bloomfield.
5. Extemal mold of back of zoarium; x2.  Upper shale member at New Bloomfield.
6. External mold of back of zoarium showing subrhomboidal fenestrules and fine longitudinal striae; x5. Upper part of upper shale member at New Bloomfield.
7. External mold of front of zoarium, and molds of subrectangular to subrhomboidal zooecia; x5.  Upper part of upper shale member at New Bloomfield.
8. External mold of front of zoarium, and molds of subrectangular zooecia; x5.  Upper part of upper shale member at New Bloomfield.

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