- Joined
- Dec 24, 2002
- Messages
- 1,169
main_board said:Chitin is a polysaccaride. Not sure if that's going to help, but just thought of it as a point of clarification. Good luck!
Cheers!
So are they chitinous, or calacareous, or both?
main_board said:Chitin is a polysaccaride. Not sure if that's going to help, but just thought of it as a point of clarification. Good luck!
Cheers!
Graeme said:Chitin, I think. Only calcareous part in a ceph is the internal shell of cuttles, as far as I'm aware...
Graeme
They are preserved as steinkerns with a thin film of black material, representing diagenetically altered chitin. X-ray diffraction analysis of samples of this material indicates that it consists of magnesium-rich c...
Unlike other members of the argonautoid families, Haliphron has a remnant of the true shell - a short, thick almost gelatinous stylet (Voight, 1995). H. atlanticus, like other members of the argonautoid families except species of Argonauta, has a hydrostatic organ (Bizikov, 2004).
Argonauts are muscular, pelagic octopods. Females secrete a thin calcareous "shell" in which they reside
Presence of external shell in females secreted by the dorsal arms.
cuttlegirl said:ammonites???
Graeme said:Ok, I have another question: How are the rings created? What secretes the chitin?
Actually I have another question: Are ceph's born with the full quota of suckers, only they're much smaller, or do they acquire more as the arm grows?
Graeme