Gastropod Name?

[rwise]

Found this in the Commanche Peak, Hood Co.,TX. It differs from many Tylostoma in the same area. Can anyone help me id? Swirls at the top are interesting.

Thanks in advance for any help.

[Indy]

Would be helpful to know the age ... time period.

[Uncle Siphuncle]

Anchura sp.?

[rwise]

Time period.....Goodland Formation, in Hood Co., TX

[Indy]

What is the geological time period of the Goodland Formation

[Auspex]

What is the geological time period of the Goodland Formation

Early Cretaceous.

[rwise]

this is from Lance Halls website (www.northtexasfossils.com) on Goodland Formation:

The name "Goodland" is used only in north Texas from about Hood county northward. From Hood county southward the equivalent limestones are called the Edwards and Comanche Peak Formations. The difference between the Edwards and Goodland is that the Edwards contains an abundant fauna of rudists and large corals while the Goodland contains no rudists except maybe as rare isolated specimens and no large corals. Otherwise many of the other fossils are identical.

The Geology of Denton County

" Goodland. This limestone formation named after the village of Goodland in southern Oklahoma, starting with thickness of about twenty feet, at the Red River, increases rapidly in thickness to the southwest ; at the same time the upper portion becomes hard and indurated, the lower soft and marly and south of the Brazos is considered as two formations. The upper or hard portion, south of the Brazos, is called Edwards; the lower softer portion is called Comanche Peak. The Goodland formation is highly fossiliferous and in certain parts of the western part of Tarrant County is a Mecca for fossil collectors. In Denton County most of the exposures of the Goodland are in rather inaccessible parts of the western and northwestern part of the county, although well worth visiting by any one in search of fossils. Characteristic and horizon marking fossils are numerous in this formation and are described and figured in the chapter on paleontology.

The thickness of the Goodland in Denton County ranges from a measured 42 feet in the northwestern part of the county to an estimated 75 feet in the southwestern part. In the western part of Tarrant County, near Lake Worth. the thickness is 116 feet. The limestone of the Goodland occurs in thick massive ledges separated by seams of marl. This limestone is unusually white and chalky in appearance. Chemical analyses made for cement projects in Tarrant County have shown that most of this material is composed of over 98 per cent pure crystalline calcium carbonate. This limestone with the combination of the overlying Kiamitia clay makes a perfect Portland cement mixture, although in Denton County this combination does not offer possibilities at present because of the inaccessibility of all good exposures which contain both Goodland and Kiamitia. "

[Indy]

That's nice ...

I was just wondering what the time period was without spending time

searching the web.