hi…I think is a rock ….

Looks like a sponge

Tabulate coral?

Some kind of coral

Worm tubes?

Bivalve shells

Looks like it

Bivalve shell probably

Crinoid stem/bryozoan fragments?

Merci 😀

It does appear to be a bone, and the pattern of lines are very interesting. I would not be able to tell you anything for certain. It would help to say where you found it or maybe the age of the rocks in the area this is from. Without that, we can only guess about what it is.

Ok I am totally wrong. Old age is getting to me today. It is a calcaneus bone or ankle bone. Your heal in humans.

I hope I deleted the 3 prior post

Very possible for tooth marks. The end of the bone is missing so it could have been chewed off.

a-trilobite I’m Just beginner don’t known the time period but I was find there also some of marine fossil

James-preston I was looking a lots of pictures similar my find and only calcaneus bone was really similar

I’m thankful for yours comments

@a-trilobite hard say for me near is place with pliocene and other side also pleistocene this place is in the middle is near to Athens (Greece) in mountains I find there also some marine fossils., I’m not expert just only start now 🙂

It is probably from a modern deer. Well modern as in from human times. It doesn’t look fossilized but it does have the looks of it being exposed to the elements for a long time. Not at all familiar with the geology and wildlife of Greece.

Hey @holly-romanek ! I believe your specimen is a chert block. So, not technically a fossil but still composed of compressed diatom skeletons.

Might be petrified wood

@bill-heim @matthew-gramling Yeah? That inner rough part that’s tubular is what’s throwing me off. So you don’t think bone at all?

Like in the first pic, you can see the top and left side it has a very grainy like feel to it and the center is rounded

I would expect bone to surrounded by sedimentary material and not what seems to be quartz. Quartz often replaces cells in petrified wood. The other problem is that New York was scraped bare by the glaciers removing any material between the Paleozoic and the Holocene (Long Island is terminal moraine deposited by the glaciers). In the Paleozoic,…[Read more]

@holly-romanek If you collected this in Shawagunk in Ulster County then I think we can definitely preclude petrified wood because the entire area is composed of Middle Ordovician strata.

My humble opinion is that it is Ordvician cher because is looks almost identical to Cambro-Ordivician Knox Grop Chert I have collected here in NW GA.

*chert

@bill-heim @matthew-gramling fascinating. I’ll always be thankful for the information you 2 can provide! My aunt isn’t 100% sure, but I think in this region (NY).. will look for some sea-like fossils tomorrow! Thank you for everything guys. Have a great night!

@holly-romanek That is certainly your best bet if the geological map on Rockd is correct for Shawagunk. Happy collecting!

Looks a lot like fossilized brain coral