Reef fossil ID

[OreRockOn]

Hello, Ive been wracking my brains over this and I can't find anything close on Google but it really looks familiar.  This is from what I think is early Triassic Thaynes group near Minnetonka Cave in St. Charles Creek/Canyon (from a paper I couldn't download so I lost it) (west shore of Bear Lake) but there is Ordovician St. Charles Fm immediately to the west. The geologic maps I can find don't even show the Triassic but I collected the ammonite locality south of Liberty so I know it's at least in the area. Anyway I collected this little bugger at the site and I'm stumped (honestly the only fossils I know well are Eocene-Miocene marine in OR & WA). The bivalve (brachiopod?) is from the same site. I got a lesson in how not to do acid removal of limestone matrix so it's a little over-soaked lol.

[Darbi]

@OreRockOn, it would be easier to identify your 'bivalve' as bivalve or brachiopod if you can show us the side view of its valve/hinge.

 

The fossil in your first picture looks like a bryozoan, I think.

[OreRockOn]

On 8/24/2020 at 10:50 AM, Darbi said:

@OreRockOn, it would be easier to identify your 'bivalve' as bivalve or brachiopod if you can show us the side view of its valve/hinge.

The fossil in your first picture looks like a bryozoan, I think.

I took a couple more photos. I did get tentative confirmation that it's a bryozoan from Paul Taylor at the London Museum of Natural History, he offered to send the bivalve? off to someone for a better ID, could be Plagiostoma.  Having an interesting email exchange with him Also found this little blob in the dissolved matrix. Looks similar, 12mm across.

[Ludwigia]

I'd tip bryozoan as well.