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I thought this was just a rock but I saw in a book this could be a walnut. Any ideas?

Hello all! I recently found a new spot that turns out is Walnut Formation. Finding lots of nice stuff there...big Echinoids - Phymosomas, a Tetragrmma and some little Leptosalenia mexicanas. But I've found a few things that I can't ID. @erose - I relooked at the presentation on Albian crabs you did for the PSoA last month and thought this one was in there, but now I don't see it? I thought you had collected one like this.. Thanks for any help, y'all! This little Bivalve looks like a Plicatula but those are not found in the Walnut? (According to the Houston Gem and Mineral Society Bivalve Book) And this other bivalve - closest I can come up with is Lopha, but again, not listed in the Walnut

Hello all! This is a little photo project I've been working on for a while. When I first started Fossil Hunting I was content to collect whatever. Then I was excited about Identifying what I was finding. The education continued and now I work to identify the geological formations I am collecting in and am able to know what fossils to look for in what areas. The Pocket Texas Geology website is invaluable for finding out the formation of a specific area (while not 100 percent accurate, it's pretty good). So I wanted to create a post that would help with Central Texas Cretaceous Fossil Identification and this Species by Formation post. There are a couple of great websites for North Texas Fossil ID, but none (that I am aware of) for specifically Central Texas. I am considering Central Texas to be the counties of Hays, Travis, Comal, Blanco, Bexar, Kendell, Williamson, Hill, Burnet, Llano, Bell, Coryell, McLennon and Bosque. And bear in mind, this is not a comprehensive list of all species found in these formations...still working on THAT! But this is what I have found and ID'd so far. I believe it contains MOST of the more commonly found fossils, plus some uncommon fossils. If you see a mis-identification, please let me know! Also, there are more formations than I am presenting, but these have been the most accessible to me. I will list them by ascending order of time period. My time periods are approximate. (Be aware, I am not a geologist nor paleontologist, just an avid amateur, so take it for what it's worth! ) Cretaceous Formations: Glen Rose, Walnut, Comanche Peak, Edwards , Georgetown, Buda, and Austin Chalk. Glen Rose Formation 106-110 MYA (Upper and Lower Glen Rose combined here) ECHINOIDS Row 1. Row 2. Row 3. Row 4. Row 5. Row 6. 1. Hyposalenia phillipsae Echinothurid plates Plagiochasma texanum 2, Goniopygus sp. Pygopyrina hancockensis Paraorthopsis comalensis 3. Loriolia rosana Goniopygus whitneyi Pseudodiadema aguilerai 4. Polydiadema travisensis Leptosalenia texana Hetearaster texanus 5. Coenholectypus sp. Pliotoxaster comanchei Phymosoma texana 6. Cidarid sp. Heteraster obliquetus Paracidarid texanus ECHINODERMATA ETC. 1. 2. 1. Unknown Crinoid Isocrinus annulatus Echinoderm Madreporite 2. Balanocidarid Spine Echinoid Spine Balanocidarid Spine AMMONITES 1. . Engonoceras piedernales Hypacanthoplites mayfieldensis DECAPODS 1. 2. 1. Crab Claw Unknown Crab Claw Unknown Pagurus banderiensis 2. Pagurus banderiensis Pagurus banderiensis Pagurus banderiensis ETCETERA 1. 2. 3. 1. Porocystis globularis Fish Pycnodont Teeth Turtle Bone Fragment 2. Foramnifera Orbitolina (group) Foramnifera Orbitolina (single) Coral Heliopora labyrinthicum 3. Spirobus Worm Annelid Worm GASTROPODS 1. 2. 3. 4. 5, 6. 7. 1. Neritina sp Semineritina apparata Pleutomaria glenrosensis 2. Natica texana Nerinia texana Nerinia harrisi 3. Fusus haysensis Turbo cuyleri Anchura monolifera 4. Cerithium blancoesnsis Unknown Gastropod Unknown Gastropod 5. Nerinia incisa Pseudomelania pupoides Tylostoma traviensis 6. Natica traski Cerithium bullardi Nerinia aquilina 7.. Tylostoma turmidum Purpuroides harperi Lunatia praegrandis BIVALVES 1. 2. 3. 4. 5. 6. 7. 8. 9 10. Other Bivalves : 11. 12. 13 . BIVALVES 1. Lima wacoensis Arca texana Ludbrookia arivechensis 2. Trigonia whitneyi Exogyra paupercula Plicatula parkerae 3. Brachidontes pedernalis Chlamys santoni Granocardium pseudopendens 4. Neithia occidentalis Cardium congestum Arctica comalensis 5. Pinna comancheana Granicardium pendens Fimbria hamiltonae 6. Trigonia gordoni Homomya comalensis Laternula simodsi 7. Psilomya walker Trigonia wendleri Homomya knowltoni 8. Tapes decepta Panopea henselli Arctica texana 9. Psilomya banderiensis Protocardia texana Arca medialis 10. Cyprimeria texana Idonearca terminalis Arctica roemeri 11. Lopha comalensis Ceratosterean texanum Exogyra guadalupae 12. Peilinia crenulimargo Liostrea ragsdalei 13. RUDISTS: Monopleura sp. Toucasia sp. Kimbleia capacis

I found this what I think to be a fossilized hickory nut that was partially eaten by some animal. I found it in northern Kentucky a couple miles from the Ohio river. If someone could help me out that would be great.

I made a trip out to the Cretaceous road cut north of Snyder near Fluvanna in Scurry County one 102 degree summer day about 6 years ago. It's labeled on geologic maps as Edwards/Comanche/Walnut unconsolidated. It's fairly well picked over due to it's proximity to Lubbock and Texas Tech, but if you look hard enough between the rocks and in the gravel you can find the more demure fossils such as these Selenia sp echinoids. The one to the upper left is a crab carapace with a partial claw lying next to it.

A couple good friends from Europe were rolling through Texas this weekend with “echinoid aspirations”. On that note, I got up early to make the drive into the Lower Cretaceous hills to indulge them. About 3 years ago I had found a couple undocumented (or at least unpublicized) sites in the Walnut Formation, did well, then let them weather until now. I figured that my patient stewardship would afford us a bumper crop today, and it did.

Not sure what this is. Please help

Hello - I'm new to this forum. I appreciate any information that you ladies and gents could provide! Thank you in advance! I've had this object all my life - I found it in Northern California when I was a child. I always thought it looked like a walnut. Perhaps it is, or perhaps it's just an unusual rock. It is rock-like in terms of its weight & feel. The middle "band" goes all the way around - similar to the band that seperates the two halves of a walnut. Thanks!

This looks to me like a petrified walnut.found in central Minnesota Ottertail county. If not any ideas?

Doing dredging in SW WI at depths to 80 feet and have found some what looks like walnut fossils? All different densities, some sandstone some very hard rock. Iv looked around and have not seen any other ones like this, any ideas? Thanks

Hi everyone, I Stumble upon this during a rainy season, its a hilly region in the east of India. It weight almost like a stone, colored like a metallic rust and this looks like a walnut to me(but never this big size) . So if you guys got any clue Please help me out.

How common are echinoids? I have found quite a few near Waring Texas.