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Campanian Crustaceanliness And A Passel Of Pachydiscus


Uncle Siphuncle

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I took my loving wife out for a dip down section recently, making a fruitful stop in the Pecan Gap Formation ('bout 72 or 73 MYA). As we were walking and I was giving m'lady a site/formation primer, my radar went off and I picked up a piece of chalky float 20 seconds into our outing.

It struck me as crabby. I've attached a field shot for your scrutiny. Later I did some light scribe prep, experience guiding a my hand as I gingerly probed around carapace nodes with which I was unfamiliar, reason being that Campanian crabs tend to be quite scarce in Texas, and this was my first. Later I circulated pics to a few crab experts, and a few possible genera came out in our exchanges....Opthalmoplax, Dromilites, Tehuacana, and Necrocarcinus. Whether it is a new species is still up in the air. Fun find no matter how it shakes out.

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Edited by danwoehr

Grüße,

Daniel A. Wöhr aus Südtexas

"To the motivated go the spoils."

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Next, a few Pachydiscus travisi

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Edited by danwoehr
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Grüße,

Daniel A. Wöhr aus Südtexas

"To the motivated go the spoils."

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Another Pachydiscus followed by a Hemiaster echinoid and a gastropod thrown in for variety.

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Grüße,

Daniel A. Wöhr aus Südtexas

"To the motivated go the spoils."

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Farther down section, in the Austin Chalk, Santonian, about 84 MYA, we found a couple echinoids. The big one is a disheveled but rare Cardiaster, and the spatangoid is a Hemiaster. Now my wife has claimed a couple more sites as "hers"...

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Grüße,

Daniel A. Wöhr aus Südtexas

"To the motivated go the spoils."

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Addendum: A cute pos/neg limonitic ammonite from the Pecan Gap

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Grüße,

Daniel A. Wöhr aus Südtexas

"To the motivated go the spoils."

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Nice finds!

----------------------------------------------------------------------------

:popcorn: John

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Fantastic post and finds, as per usual.

Thanks for the post, Dan.

Regards,

    Tim    -  VETERAN SHALE SPLITTER

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__________________________________________________
"In every walk with nature one receives far more than he seeks."

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