Edit: No. Turns out to be a pollen grain. Thanks Chris!
(pollen morphology is quite fascinating and breathtakingly diverse, btw! Plant sex is weird...)
Found this in a marine benthic sample this past spring, never got around to cropping it:
(40x DIC; obsessive-compulsive optical sectioning alert...)
Could this be some sort of foraminiferan? Reminds me of something Globigerina-oid, but if I recall it's planktonic, not benthic - although those things are quite capable of 'littering' once they die. Any thoughts?
(can provide a higher res image if interested)
The Litiopids: Small Sea-Snails among the Weeds
3 hours ago in Catalogue of Organisms