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Showing results for tags 'arcadia park formation'.
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Ostrea alifera var. pediformis Craigin
DPS Ammonite posted a fossil in BivalvesThis is a Cretaceous oyster that I found in Post Oak Creek in Sherman, Texas. The oyster has traces of a yellowish calcite-cemented sandstone found in the upper part of the Arcadia Park Formation of the Eagle Ford Group. "Pediformis" in the name, Ostrea alifera var. pediformis, means foot-shaped or pediform because the oyster looks like a foot or boot. In Hill 1898, the author eliminated the Ostrea alifera Cragin, and Ostrea alifera var. pediformis Cragin names because he considered them to be Ostrea lugubris Conrad. I disagree with Hill's decision because my oyste
ThePhysicist posted a gallery image in Members Gallery
From the album: SquamatesThis small tooth is likely from a juvenile small, early mosasaur. In just a few million years, these aquatic reptiles would diversify and grow to large sizes.
Funky Kamp Ranch Cretodus
Heteromorph posted a topic in Fossil IDA few weeks ago I was working an exposure of the middle Turonian Kamp Ranch member of the Arcadia Park Formation in North Texas, using a chisel and the natural bedding planes to pull up slabs. I had been there less than 15 minutes and had only found one small, broken tooth amongst shell hash when I found this almost perfect medium sized Cretodus crassidens. I also found some smaller shark teeth including Ptychodus sp., miscellaneous vertebrate material, and ammonites of possibly multiple species. So far this specimen is my largest from the site The first thing I noticed about it w
Consolidating Arcadia Park Formation Fossils
Heteromorph posted a topic in Fossil PreparationI recently went hunting for my first time in the Turonian Arcadia Park Formation, an Eagle Ford group shale formation in North Texas. I found some great fossils, but many of them are fragile. I found a Worthoceras sp. specimen in matrix that seems to be on the verge of falling apart, and a very small Metoicoceras sp. specimen in a similar situation. They both have the nacreous shell preserved. Many of the other ammonites that I found tend to flake bits of the white shell while I am handling them. What can I use to consolidate the specimens so that they don’t fall apart and so that the shell do
DPS Ammonite posted a gallery image in Members Gallery
From the album: Prionocyclus bosquensisFound in the Cretaceous Arcadia Park Formation from the TXI Quarry in Midlothian, Texas. It is Prionocyclus bosquensis according to Jim Kennedy, Professor Emeritus of Natural History at Oxford. He also first described the species. See his paper describing this and other species: Kennedy, W. J. 1988. Late Cenomanian and Turonian ammonite faunas from northeast and central Texas. Palaeontological Association, Special Papers in Paleontology, 39: 131 pp.
Post Oak Creek, Texas Oyster
DPS Ammonite posted a topic in Fossil IDWhat is this Cretaceous oyster that I found in Post Oak Creek in Sherman, Texas? Most oysters in the creek come from a yellowish calcite-cemented sandstone from the Arcadia Park Formation of the Eagle Ford Group. It is about 48mm in length.
DPS Ammonite posted a fossil in BivalvesHere are interior and exterior views of both valves of the Cretaceous oyster, Cameleolopha bellaplicata, collected in Post Oak Creek in Sherman, Texas, The specimen is more oval and elongated that most of the members of its species. The calcite valves with a trace of interior aragonite, mother of pearl, are covered in yellowish calcite cemented sandstone. The larger valve has the remnants of an attached ramose bryozoan that grew on the shell since the muddy Arcadia Park Formation did not provide a great hard ground to grow on. An unidentified domed colonial stone coral species also grow on the
Please Help With U. Cretaceous - Eagle Ford Group Fish Id
vertman posted a topic in Fossil IDI found this fish yesterday in the Arcadia Park member of the Eagle Ford Group from the Upper Cretaceous of Dallas County Texas. I have not seen one of these before. I am hoping someone else has. The preservation on this one is very cool. I like the way it is laid out on the slab sort of like all those fish from Wyoming. Does anyone know what genus/species this fish might belong to? Your help is greatly appreciated!