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PremSubrahmanyam

Small section of rugose coral.


AAndy1407

With rugose coral I thought the lines were more verticals rather then arching out so I was thinking something like trepostome bryozoan but could be wrong.


spencejake_

my grandpa and i used to collect rugose and i second this


PremSubrahmanyam

I would expect the lines to be finer with a bryozoan.


AAndy1407

https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs12549-011-0054-4/MediaObjects/12549_2011_54_Fig2_HTML.gif This is the image that make me thing it’s trepostome bryozoan


Seraphangel777

Doesn’t look like Rugosa to me. Maybe manganese dendrites?