- Joined
- Mar 7, 2009
- Messages
- 542
Here below is a funny looking globular goniatite, Parawocklumeria paradoxa, (14 mm) from the Devonian of Devon.
Is there a good explanation for this tri-radial pattern of constrictions?
Other goniatites, like the attached German Cheiloceras, don't show this tri-radial pattern, but have a regular spacing in the constrictions. Could it be a record of seasonal changes in growth rates or annual pauses in growth?
Is there a good explanation for this tri-radial pattern of constrictions?
Other goniatites, like the attached German Cheiloceras, don't show this tri-radial pattern, but have a regular spacing in the constrictions. Could it be a record of seasonal changes in growth rates or annual pauses in growth?