Revision of northeast Pacific Paleogene cypraeoidean gastropods, including recognition of three new species: implications for paleobiogeographic distribution and faunal turnover
Author
Groves, Lindsey
Author
Squires, Richard L.
text
PaleoBios
2023
2023-08-10
40
10
1
52
http://dx.doi.org/10.5070/p9401057774
journal article
10.5070/P9401057774
0031-0298
10913295
11600574-2B0E-4C13-BC08-A3A5EF9EE562
BERNAYA
sp.
Figs. 5J–L
Hypotype—
LACMIP 7047.72
,
LACMIP
Type
14923 (
Figs. 5J–L
), length
33.8 mm
, width
23 mm
, height
18.3 mm
.
Occurrence—
LACMIP
Locality 7047 [
ex
CIT
Locality 868], Lower Lake area, Lake County, northern Califor- nia, “Martinez Formation” strata containing
Turritella infragranulata
Gabb, 1864
, in the Herndon Creek, Lower Lake, Lake County, northern
California
(
Stanton 1896
).
Saul (1983
: p. 102) confirmed
Stanton’s (1896)
report of this turritellid and assigned it to the Thanetian Stage.
Remarks
—This gastropod is represented by a single specimen, which has moderate preservation. It is similar to the only known specimen of
Bernaya squiresi
Groves, 2011
from the Crescent Formation (middle lower Eocene “Capay Stage”). Both specimens have similar shell shape, a small exposed spire, numerous strong teeth on the apertural lips, and are poorly preserved in the critically important anterior end. Three additional specimens of the Lower Lake taxon (
LACMIP
7047.73), all from
LACMIP
Locality
7047 in
the Lower Lake area, are likely the same genus but their preservation is too poor for confirmation. A single specimen from the Santa Susana Formation, Simi Valley, Ventura County, southern Cali- fornia (
LACMIP
12481.1,
LACMIP
Type
14924) (
LACMIP
Locality 12481) may also be the same genus but is also too poorly preserved to make a positive identification.