tetrapleuroserus

tetrapleuroserus roose mein ural key nichale permian seey ack vilupt pragaitihasik notiloid haye. nautilid ack prakaar kaa nautiloid haye, joe shelled cephalopods kaa ack upavarg haye joe kabhi vividh aur kaee they lekin abb kewal "nautilus" aur "allonotilus" dwara pratinidhitva karate hain."
"tetrapleuroserus" dou vanshon mein seey ack haye joe 1957 mein neptunocerratidae key roop mein sanyukt haye, doosara "neptunosera" haye. russo phool (1963) key anusaar, neptunocerratidae, sandeh key saath cyphoseratidae seey alag haye, joe kii iposeratacy mein shamil nichale permian seey ack parivaar haye.(1964).
cyphosaratidae, jise "tetrapleuroserus" saunpa gayaa haye (phool 1963) cyrtoconic yaa sambhavatah chikane yaa ribbed shale key saath dheele kundalit notilid hain, aam taur parr chhote fragmocons, aur thode vistaarit syphunk khand hain.

