Petrified wood

Petrified wood.

Hi @chad-taylor. These look like archaeocyathids!

@colby-king I’m sorry, but I can’t see the photo. Modern means younger than the Pleistocene (Ice Ages). Because shells are hard they can hang around the surface for a while before being deposited so it could have died yesterday or 3000 years ago.

Crinoid stems.

@colby-king@samantha-ocon It is bivalve but without more context it looks modern.

Yep!

Nice specimen. I believe they are in the brachiopod order Rhynchonellida.

It’s some sort of oyster. I don’t know the genus though.

Yep

Ellen J. Moore has a book titled “Fossil Shells from Western Oregon” which is a great ID guide.

Hi @scot-malcolm. It looks like you are probably either in the Empire or Astoria Formation. Both are Miocene but are in different parts of it. Because the 7th rib from the left looks slightly higher it’s probably a Vertipectin as opposed to a Patinopectin. Vertipectins occur more frequently in the Empire Fm.

@corina-fernandes@samantha-ocon I think it could be a sponge too especially since I don’t see septa. Here are some photos of some Carboniferous sponges from Woosters https://woostergeologists.scotblogs.wooster.edu/2015/06/05/woosters-fossil-of-the-week-a-chaetetid-demosponge-from-the-upper-carboniferous-of-southern-nevada/

Hi @lisa-anderson, I’m sorry to tell you this but it appears to be a rock.

@samantha-ocon and @corina-fernandes I don’t know what it is but I do see some shelly parts on one of those columns. It could be some sort of burrowing bivalve?

Looks like it to me!

Looks like it to me 😁

@samantha-ocon and @nathan-newell I can confirm this is Neuropteris. However, if Tracheophyta is being treated as a division then the order should be Pteridospermatophyta. The Medullosales falls in this group and not the cycads.

Hi @sara-bayley. Jellyfish fossils preserve under the rarest conditions and require very soft sediment. The rock looks too coarse for that. I don’t know what it is but it’s interesting.

Hi @lora-loman! I believe SE OK has rocks from Ordovicean-Devonian. It’s likely some sort of orthocone – a shelled squid-like relative.