Cardioceras hyatti

Found these Cardioceras hyatti in the Redwater Member of the Stump Formation. I had been looking for new collecting localities on Google Earth all summer, and decided to stop by on the way home from Big Wonderful this weekend, glad I did!

Ammonoid collecting

Dieter Korn on the left and Alan Titus on the right. at Granite Mt., Juab County Utah September 1, 2007

I went collecting with Dr's Alan Titus and Dieter Korn on August 30 thru Sept. 3, 2007. It just happened to be the hottest September day on record, 104 on the 2nd. Still, I had a great time and learned alot from these guys.

Un-identified Ammonoids

A very hot day in the West Desert of Utah netted these.

The first (bottom) I have identified as ?Koninckites on the web site, dont know if that ID is anywhere close. Compressed shells with a well rounded venter, the umbillicus is shallow, the umbillical walls almost non-existant, especially on older shells. The only ornamentation is well formed growth lines, not strong enough to be called ribs, but stronger than most growth lines.

The second (top) is tentatively identified as Wyomingites, again, no constrictions as in Xenoceltites, and no ribs as in Kashmirites.

Someday some brite young phD. will revise the taxonomy of the Early Triassic ammonoids and put a smile on my face.

Belemnites

A spur of the moment trip to the Vernal area last saturday netted these Belemnite guards. All? Pachyteuthis densus from the top of the Curtis Member of the Jurassic Stump Formation. Who is the author/s of P. densus? I have "(Meek and Hayden) 1858" [I cant remember where I got that] on my website, all other references on the web just have "(Meek)" with no date.

Some New Papers

Lucas, S. G., Goodspeed, T. H., and Estep, J. W., 2007, Ammonoid Biostratigraphy of the Lower Triassic Sinbad Formation, East-Central Utah, in, Lucas S. G. and Spielmann, J. A. eds. Triassic of the American West, New Mexico Museum of Natural History and Science Bulletin 40

Lucas, S. G., Krainer, K., and Milner, A. R. C., 2007, The Type Section and Age of the Timpoweap Member and Stratigraphic Nomenclature of the Triassic Moenkopi Group in Southwestern Utah, in, Lucas S. G. and Spielmann, J. A. eds. Triassic of the American West, New Mexico Museum of Natural History and Science Bulletin 40

UFOP Convention, Green River, Utah, May 17-20

A few pics from the field trip Saturday around the Crystal Geyser Quarry. Looking thru the Cedar Mt. Formation for bones. Bob Bakker gave a very nice presentation the night before, all about bullets and dead bodies.

LUMPER

I feel like Lumping

Lumper/Splitter Definition

Fungus Lumper

More Polymorphism ?

In the Jurassic Stump Formation (Oxfordian) the Cardiocerids also show alot of polymorphism. Many genera and species have been described for what is possibly just a single species.