First post on TFF, hello all! I can't lie though, I've been sneakily perusing this forum for a good year now, learning from other's posts!
Anyways... This is a tiny stellate structure found on Jurassic limestone from the Cotswolds, England. Upon first glance, I somewhat childishly assumed it to be asteroidea, but, based on other specimen I've gathered in this area, and the details on it, I'm leaning more towards a Pentacrinite columnal. However, based on the thinness of the structure, its taxophonomy, and the fact that it alone, I'm still unsure.
There's also a plethora of other specimen on this bed - for example, to the right of the structure, there's a small Pectinida! Undoubtedly, this was once the seafloor!
Please, submit your ideas!