Confusion About Ammonite Anatomy Terms

Pr0teusUnbound

GPO
Registered
Joined
Nov 6, 2012
Messages
128
#1
there are a few ammonite shell anatomy terms that have been confusing me.

what do the terms "whorl" and "volution" mean? are they the same thing? are they a full revolution shell growth (360 degrees?) around the unbilical axis? or just 3/4 (270 degrees?) around it?
 

Pr0teusUnbound

GPO
Registered
Joined
Nov 6, 2012
Messages
128
#3
really? i remember reading somewhere that a volution was 3/4 of a complete revolution (supposedly because the final quarter of the revolution was larger than each previous quarter).
 

Members online

No members online now.

Forum statistics

Threads
19,353
Messages
201,858
Members
8,274
Latest member
Mcorbell

Monty Awards

TONMOCON IV (2011): Terri
TONMOCON V (2013): Jean
TONMOCON VI (2015): Taollan
TONMOCON VII (2018): ekocak

About the Monty Awards
Top