About
Note: Do not rely on this information. It is very old.
Arcestidae
Arcestidae, a family of Ammonites with a long body chamber; it ranges in time from the period represented in England by the Coal-measures to that of the New Red Sandstone.
Arcestidae, a family of Ammonites with a long body chamber; it ranges in time from the period represented in England by the Coal-measures to that of the New Red Sandstone.