Hi @elizabeth-henson and @imagallanes. Yes, this is petrified wood and it is known from MS though I’ve only heard about if from the northern part of the state. Wood is hard to ID in a practical sense because you need cellular preservation and a section that you can put under a microscope. It doesn’t look like there is cellular detail so I’m afraid…[Read more]

Hi @samantha-ocon@kristen-cotiaux . Coral is a good guess but this could also either be a sponge or bryozoan.

@ali-benharkat I agree with @samantha-ocon

@dawn-vitale@samantha-ocon So Sturgeon and Miller published on some Pennsylvanian cephalopods from Ohio but in their paper they also talk about them being in PA too. Looks like there is some shared geology. Maybe it’s in one of their two publications. Here is the link for one: https://www.jstor.org/stable/1299256?seq=1#metadata_info_tab_contents.…[Read more]

@dawn-vitale@samantha-ocon@jbauer I think it might be a cephalopod? Sort of looks like chambers and sutures with outside ornamentation. Where was it found?

@i-edwards, @samantha-ocon, @dominik-niehaus and @nathan-newell, Wow, I’m popular today. Yes, I agree with Nathan and Dominik that this is a species of Neuropteris. The midvein of the pinnule attaches to the rachis without any laminar attachment. This, however, is not a fern despite having foliage that looks like ferns. These plants produce seeds…[Read more]

@dominik-niehaus and @samantha-ocon. Nevermind! It looks like you already have the ID.

Hi @dominik-niehaus and @samantha-ocon. This is Sigillaria, a club moss tree (scale tree). Nice specimen.

Very nice pieces!

Hi @angela-b. This is likely Knightia eocaena from the Green River Formation (Eocene about 50 million years old), Wyoming. It’s an extinct herring. The color and texture of the marl (type of rock the fish is in) matches that of the Green River Formation and these fossils are commonly sold. However, there are also a few places in China that have…[Read more]

@dawn-vitale@jbauer I can’t say if it’s wood or not. From the picture it looks like the texture could be caused by turbidity in the water at the time it was formed. Again, hard to say one way or another.

Hi @giovany-figueroa! I can see why you think this might be a fossil. However, I think it’s either a fracturing or chemical weathering pattern. These sorts of rocks are notorious for that. (@jbauer)

Hi @tok-moon! This looks like the stem of some sort of tree fern, probably in the family Cyatheaceae. This is the family that most modern tree ferns belong to. The large, squiggly, semi-circles are leaf bases – regions on the stem where a leaf would attach. Although not true wood, these parts can be found in association with petrified wood. Most…[Read more]

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.