Peroniceras

Architeuthoceras

Architeuthis
Staff member
Moderator (Staff)
Joined
Nov 19, 2002
Messages
2,460
Location
somewhere under the desert sky
Peroniceras haasi? from the Mancos Shale in Utah. Late Cretaceous (Coniacian) Scaphites preventricosus Zone. The inner whorls are broken and shifted so I dont think any more prep would help. Just something to post until some of this snow melts and I can get out and look for more. :boohoo:
 

Attachments

  • conv_302500.jpg
    conv_302500.jpg
    55.8 KB · Views: 80
Nice find Kevin, as ever!

That ammonite has a strongly defined keel. I wonder if that feature helped maintain directional stability in the water and acted as streamlining to a limited extent?
 

Shop Amazon

Shop Amazon
Shop Amazon; support TONMO!
Shop Amazon
We are a participant in the Amazon Services LLC Associates Program, an affiliate program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
Back
Top