Hi Joe and Andrew,
 
I've enjoyed the discussion of fossil cephalopods. Below you mention straight
"cones"...would this be the same as "straight cephalopods" (a term with which
I'm familiar)? In Minnesota I've seen specimens of Endoceras sp. (Ordovician,
Decorah Shale) 8 feet long, and also sections which would belong to examples
much longer (by virtue of their diameter). Specimens up to 14 ft. have been reported.
 
Ken Zentzis
Wichita, Kansas
 
NORA BRYAN wrote:
>
> Hi Andrew,
>
> Joe here (on Nora's E-mail).
 
>             As for 'giant' ammonites. There are a few specimens in the
> Jurassic here in Alberta that approach the 6 foot size in diameter. They
> have not been collected as they are in matrix at remote sites.  Now we
> will have to find one over 8 feet.  I do believe, however, that some
> straight 'Cones' were much larger; I will try and find a reference.