I already asked Dr Hisashi Suzuki and Dr Gawlick about the possibility of it being Radiolaria, However they both agreed it is not, though Dr Suzuki did not reject the possibility of it being new Radiolaria specie. It has been seen along with possible Calpionellids and possible Saccocoma fragments and Holothurians of Mesozoic.
I would be thankful to have new suggestions.
Thanks
Hesam