@charles-du No problem! Glad to help.

Hi, @matthew-gramling ! Cool specimen, @charles-du ! I think this looks like it might be Rafinesquina:
http://drydredgers.org/brachraf.htm

I’m not sure if I’d say it’s the particular species featured in that link, but it looks similar to all these “Rafies”:
http://drydredgers.org/thumb_by_articulate.htm#Rafinesquina

@sam-turner@matthew-gramling No problem! Glad I could help!

Hi, @sam-turner and @matthew-gramling ! I think this is a Pseudogygites pygidium:
https://en.wikipedia.org/wiki/Pseudogygites

The latitude and longitude made it much easier to look up the formation on Rockd, so good job Sam! This looks like it came from the Lindsay Formation (Middle Ordovician) so you can use that to fill in the Geochronology…[Read more]

Hi, @matthew-gramling and @nathan-anderson! Looks like you were able to identify it, Nathan. Great specimen, by the way!

Hi, @robert-knisel ! I agree with @matthew-gramling , I don’t see anything definitively coral with this, but maybe I’m wrong. But what’s the crease in the side? Does it come apart? And do you know what the label said? It’s very mysterious. 😄

@matthew-gramling@a-trilobite Hi everybody! I’m not sure if these are fossils. I see rocks like this every once in a while and I usually just assume that they’re recently stained from something like mosses or roots growing on the rock, rather than fossils. Maybe I’m wrong, though. 🙂