
koronikeras

koronikeras erititidae mein ack genus haye, joe ammonited super family cylosaratidia mein ack parivaar haye, joe nichale jurassic mein nichale cinermurian charan seey haye. yeh "arniocerras semistatum" kshetra kaa ack upa-kshetra ammonite haye.
"koronikeras" mein ack golakar whirl khand, dhanushakar venter, ekal lamba keel aur kuchh lekin majboot pasaliyon key saath ack patali discoidal roop hoti haye. "koronikeras" upa-parivaar erititina mein shamil haye.
koronikeras bucklandy" key jeevaashm aamtaur parr lime regis, dorset tata, ingland mein neele lias key uchch choone key pattharon mein paae jaate hain.

