THE NAUTILUS 115(l):22-28. 2001
Page 22
Revision of the Architectonicidae ( Gastropoda: Allogastropoda)
from the Miocene Chipola Formation, Oak Grove Sand, and
Shoal River Formation of northern Florida, with descriptions of
four new species
G. W. Schmelz
5575 12th Avenue Southwest
Naples. Florida, 34116 USA
ABSTRACT
A revision of the Architectonicidae from the Miocene Chipola
Formation, Oak Grove Sand, and Shoal River Formation of
northern Florida is presented, along with descriptions of four
new species. Two new species are assigned to the genus Helia-
cus, one to the genus Architectonica and a fourth to the genus
Granosolarium.
Additional key words: Architectonica. Heliacus. Granosolar-
ium. Tertian', Neogene, fossil mollusks.
INTRODUCTION
Of the estimated 1100 .species of mollusks believed to
be represented in northern Florida's Miocene Chipola
Formation and Oak Grove Sand deposits onK' about 640
have been described (Yokes, 1989; 1997). Currently, be-
tween 120 and 130 unde.scribed species of mollusks from
the (^liipola Formation, Oak Grove Sand, and Shoal Riv-
er Formation have been (hscovered !))
Revision of the Architectonicidae (Gastropoda: Allogastropoda) from the Miocene Chipola Formation, Oak Grove Sand, and Shoal River Formation of northern Florida, with descriptions of four new species
BioStor
