At first glance, this looks like a brachiopod (lamp-shell)! These were particularly prevalent during the Paleozoic, though survive to modern times.

that has a very nice crystalline texture! Unfortunately, I don’t think there are any fossils in there, they tend to be found in sandstones or mudstones. From what I can tell, you’ve got a little hunk of quartz, with some plagioclase (a mineral that is slightly milkier-looking than quartz) and possibly some biotite (the brown colouring in it) as…[Read more]

the bottom left picture looks an awful lot like crinoid stems, though I can’t say for sure.. another option may be worm burrows (a lot of them?)?

very possibly! do you have any more pictures, by any chance?

looks like you’ve got a handful of brachiopods, and even a gastropod in there. Nice! I took a glance at some of your other posts, you have a really nice collection of brachiopods!

looks like you’ve got a rock full of crinoids! Each of those star shapes are crinoid columnals, they’re sometimes called “sea lillies” because of their flower-like shape.

Thanks! It’s probably my favorite insect fossil in my collection!

the ribs and commissure make me think family Rhynchonellida?..

Not certain on “Knightia”, but likely! Knightia eocaena is perhaps the most common fossil found here.