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Bridgeport, TX (Jasper Creek Formation) - IDs


gdarone

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Although the camp to which it was originally donated fell through due to lack of enrollment, my regular students were able sort through a gallon of Bridgeport, TX matrix (Jasper Creek Formation, Pennsylvanian) donated by SilverPhoenix.

Using the great help that was already offered by TFF in the previous post by SilverPhoenix discussing the same matrix ( http://www.thefossilforum.com/index.php?/topic/50434-bridgeport-tx-fossil-trip/?hl=%2Bjasper+%2Bcreek ), and using the "The Fauna of the Wewoka Formation" http://pubs.usgs.gov...0544/report.pdf publication and the website: http://www.northtexasfossils.com/ the students were able to identify several of the types found.

Some we were not sure of. Any help is appreciated. The kids are excited because once we get them IDed we will mount them and display them in the classroom.

Fossils will be uploaded in following posts. Fossils photographed using a flatbed scanner at 1200 dpi. Some strange colors appear in that process, but the fossils are mostly light in color (no red splotches).

Thanks,

Greg

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Girtyocoelia

Sponge

post-12990-0-07082800-1456356403_thumb.jpg

Chonetinella sp.

Brachiopod

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Coelocladia spinosa

Sponge

post-12990-0-06369800-1456356501_thumb.jpg

Worthenia tabulata

Gastropod

post-12990-0-89626500-1456356539_thumb.jpg

Derbya crassa

Brachiopod

post-12990-0-97238400-1456356573_thumb.jpg

Archeocidaris sp.

Echinoid pieces and spines

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Nice one's

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post-12990-0-44451500-1456356644_thumb.jpg

Unknown species

Crinoid spines

post-12990-0-50570900-1456356706_thumb.jpg

Unknown species

Crinoid basal plate

post-12990-0-98974600-1456356767_thumb.jpg

Unknown species

Crinoid stems (smooth shape)

post-12990-0-55643400-1456356802_thumb.jpg

Unknown species

Crinoid stems (corrugated shape)

post-12990-0-09154700-1456356843_thumb.jpg

Unknown species

Crinoid stem (pentagonal shape)

post-12990-0-07887500-1456356877_thumb.jpg

Unknown species

Crinoid stem (star-shaped center)

post-12990-0-35795500-1456356954_thumb.jpg

Fenestella sp.

Bryozoan

post-12990-0-96740100-1456357060_thumb.jpg

Unknown Bryozoan?

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post-12990-0-81194200-1456357200_thumb.jpg

Not sure about this one, the knobs are much further apart than the Coelocladia?

post-12990-0-84190900-1456357246_thumb.jpg

Not sure about this one, very small. Looks like crinoid, but with weird bands. One even shows the tiny spines on the bands.

post-12990-0-84442500-1456357291_thumb.jpg

Not sure. Has a lumpy surface, but not sure if a sponge, coral, bryozoan, or other?

post-12990-0-38375200-1456357360_thumb.jpg

Lophophyllum profundum

Rugose coral

post-12990-0-15933900-1456357330_thumb.jpg

Not sure. It looks a little like the Lophophyllum, but the bands are concentric, not lengthwise.

post-12990-0-23256200-1456357416_thumb.jpg

Not sure. Looks a little like a cephalopod in shape, but no discernible septa?

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post-12990-0-93909900-1456357506_thumb.jpg

Not sure. Some sort of bryozoan encrusting something?

post-12990-0-00845900-1456357539_thumb.jpg

Not sure. Looks a little like part of crinoid cup pieces, but also kind of looks like some mouthpiece for fish?

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Check out this new book: Color Guide to Pennsylvanian Fossils of North Texas by McKinzie. Maybe the author could help ID the more unusual stuff.

This might be a Michelinia sp. coral. Can you get a photo of the top?

attachicon.gif08.jpg

Not sure. It looks a little like the Lophophyllum, but the bands are concentric, not lengthwise.

This is a cephalopod, probably Pseudorthoceras sp. You can see the rounded septa on the top of the fossil.

attachicon.gif09.jpg

Not sure. Looks a little like a cephalopod in shape, but no discernible septa?

Edited by DPS Ammonite
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Yes, the Color Guide to Pennsylvanian Fossils of North Texas by McKinzie looks great. It's not in our library and our budget is low.

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This might be a Michelinia sp. coral. Can you get a photo of the top?

The top is smushed (the fossils has been flattened?)

Many thanks for the 2 ids.

Edited by gdarone
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This is a cephalopod, probably Pseudorthoceras sp. You can see the rounded septa on the top of the fossil.

attachicon.gif09.jpg

Not sure. Looks a little like a cephalopod in shape, but no discernible septa?

Or Michelinoceras sp.

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attachicon.gif07.jpg

Not sure. Has a lumpy surface, but not sure if a sponge, coral, bryozoan, or other?

I'm pretty sure this is the sponge Amblysiphonella.

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