Texas possible fossil find??

[Therealleonardlewis]

Hello guys and gals! New to the forum and the study of geology! It is starting to be a very rewarding hobby! I found this unknown specimen in a wet creek bed in Fort Worth Tx. I have no idea what it is just trying to get more information about it that could point me in the right direction. 

Edited July 23, 2019 by Therealleonardlewis

[facehugger]

Welcome! It is a very rewarding hobby, and you live in a great area for finding fossils. 

 

Pretty sure your specimen is a Cretaceous bivalve. 

 

This is a great book to help you identify if you're just getting started: 

 

https://www.amazon.com/Field-Guide-Fossils-Texas-Publishing/dp/0891230440/ref=asc_df_0891230440/?tag=hyprod-20&linkCode=df0&hvadid=312130957577&hvpos=1o1&hvnetw=g&hvrand=1786951562102664855&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9027580&hvtargid=pla-570323792858&psc=1 

[Fossildude19]

I agree, bivalve, maybe some type of Ostrea, or Trigonia? 

 

Free PDF Handbook of Texas Cretaceous Fossils.

[Plax]

exogyra

[Fossildude19]

@JohnJ

[DPS Ammonite]

It is a Texigryphea species. You need to know the formation to ID the species.

 

What formation is the fossil from? Also, what other fossils come from the site? See geological maps: https://txpub.usgs.gov/txgeology/

 

 

[BobWill]

Welcome to the forum from Cooke County, north of Tarrant County. That's a nice oyster since they often don't have the right (thinner) valve in place You can see a  scar at the top in the second image where the left valve would have made a permanent attachment to a solid object. If you live in the area and your interest in fossils grows you may consider joining the Dallas Paleontological Society for networking with amateurs and professionals and chances to join us on  fossil collecting field trips to the many sites in the area. www.dallaspaleo.org

[Mark Kmiecik]

Nice find -- welcome to the fascinating world of fossils. Fossil oysters, especially the genus Gryphaea, are commonly called "The Devil's toenails". You can probably have some fun with that.

[Therealleonardlewis]

Omg! Sooo much information! Thank you thank you thank you!  It took me literally 5min to find this with no digging! I got some research to do obviously but I really do appreciate the informative responses!  As this is my FIRST fossil find my mouth is dripping with saliva! 

[Therealleonardlewis]

5 hours ago, DPS Ammonite said:

It is a Texigryphea species. You need to know the formation to ID the species.

 

What formation is the fossil from? Also, what other fossils come from the site? See geological maps: https://txpub.usgs.gov/txgeology/

 

 

I dont understand what you mean by formation but I will find out!  Thank you guys I love yall!

[Plax]

20 hours ago, Plax said:

exogyra

A good illustration of using ones local experience to ID something from afar. This looks like an Exogyra to me but of course is not. I should keep my opinions to myself and let the local experts determine anything I'm unsure of.

[Mark Kmiecik]

21 hours ago, Therealleonardlewis said:

I dont understand what you mean by formation but I will find out!  Thank you guys I love yall!

The formation is the named grouping of depositional layers in which the fossil is found. The name of the stratum. Google 'geological strata'. Each state's geological survey office publishes maps of the layers of rock beneath the soil, both horizontal and vertical. The horizontal maps usually depict the layer(s) found at the surface throughout the state. The vertical maps depict all the layers below a specific location, such as the northeast corner of Jackson county.