Smaller Foraminifera From Guam - USGS

Significant benthonio Foraminifera in Oligocene samples from
the Mahlac Member of the Alutom Formation Continued
Species
Bolivina plicatella mera
Cushman and Ponton.
Bolivina tumida Oushman.
Bolivina vicJcsburgensis
(Howe).
Bolivinopsis cubensis
(Cushman and Bermu-
dez).
Bulimina alazanensis
Cushman.
Bulimina bleeckcri Hed-
berg.
Bulimina semicostata Nut-
tall.
Caucasma grata (Parker
and Bermudez).
Chilostomella cyclostoma
Rzehak.
Chrysalogonium ciperense
Cushman and Stain-
forth.
Chrysalogonium lanceo-
lum Cushman and Jar-
Chrysalogonium longicos-
tatum Cushman and
Jarvis.
Chrysalogonium tenuicos-
tatum Cushman and
Bermudez.
Cibicides havanensis
Cushman and Bermudez.
Cycloloculina cubensis
Cushman and Bermu­
dez.
Ellipsoglandulina labiata
(Schwager).
Eponides duprei ci.ervoen-
sis Cushman and Simon-
son.
Eponides kiliani (An-
dreae).
Halkyardia bikiniensis
Cole.
Nodosarella robusta Cush­
man.
SMALLER FORAMINIFERA FROM GUAM 15
Reported occurrences elsewhere
Miocene of Florida; Oligocene of
Texas; Tertiary of Dominican
Republic.
Miocene of California.
Oligocene of Eniwetok; lower Oli­
gocene of Mississippi and Ala­
bama.
Upper Eocene of Cuba ; Eocene and
Oligocene of Trinidad.
Oligocene of Mexico, Cuba, Trini­
dad, and Dominican Republic;
Eocene of California, Cuba, and
Trinidad; Oligocene and Miocene
of the Virgin Islands; mid-Ter­
tiary of Venezuela; Aquitanian
of northern Colombia; Miocene
of Majorca; Aquitanian of Italy.
Oligocene of Venezuela, Cuba, Do­
minican Republic, Trinidad, and
Texas; Aquitanian of northern
Colombia.
Eocene of Saipan; Eocene, Guaya-
bal Formation of Mexico; Eocene
of California and Cuba.
Eocene of Cuba, Trinidad, and Cali­
fornia ; Oligocene of Trinidad;
upper Eocene and lower Oligo­
cene of Barbados.
Eocene of Saipan; Oligocene of
Austria.
Oligocene of Trinidad.
Oligocene of Trinidad; Eocene of
Cuba and Trinidad; Miocene of
Jamaica, Dominican Republic,
and Majorca; middle Eocene to
lower Oligocene of Barbados.
Oligocene of Trinidad and Domini­
can Republic; upper Eocene and
lower Oligocene of Barbados;
Miocene of Majorca; lower Mio­
cene of Algeria.
Eocene of Cuba and Trinidad; Oli­
gocene of Trinidad and Domini­
can Republic; middle Eocene to
lower Oligocene of Barbados;
Miocene of Majorca.
Eocene of Cuba; middle Eocene to
lower Oligocene of Barbados.
Eocene of Cuba; middle Oligocene
to lower Miocene of Puerto Rico.
Miocene of Kar Nicobar; Eocene of
Saipan; lower Oligocene of Mex­
ico and California; Eocene and
Oligocene of Trinidad; Eocene of
Ecuador; middle Eocene to lower
Oligocene of Barbados; upper
Miocene of Dominican Republic ;
Miocene of Majorca and Spain ;
Oligocene of Italy.
Oligocene, Tumey Formation (of
Atwill, 1935) of California; Eo­
cene, Oligocene, and Miocene of
Eniwetok.
Miocene of Saipan; Oligocene of
Alsace.
Oligocene of Bikini; Eocene and
Oligocene of Eniwetok.
Miocene ? of Virgin Islands; Eocene
and Oligocene of Trinidad; mid­
dle Eocene to lower Oligocene of
Barbados.
Significant benthonic Foraminifera in Oligocene samples from
the Mahlac Member of the Alutom Formation Continued
Nodosarella subcylindrica
Cushman.
N onion maorioum
( Stache).
Nonion micrum Cole______
Pararotalia byramensis
(Cushman).
Pleurostomella bierigi
Palmer and Bermudez.
Pleurostomella cubensis
Cushman and Bermu­
dez.
Pleurostomella naranjoen-
sis Cushman and Ber­
mudez.
Stilostomella recta (Pal­
mer and Bermudez).
Stilostomella subspinosa
(Cushman).
Stomatorbina torrei
(Cushman and Bermu­
dez).
Vaginulinopsis sublituus
multicamerata (Cush­
man and Stainforth).
Virgulina colei Cushman__
Virgulina zetina Cole_____
Reported occurrences elsewhere
Miocene? of Virgin Islands; Oligo­
cene of Trinidad.
Upper Eocene and lower Oligocene
of New Zealand.
Eocene of Saipan, Eniwetok, and
mid-Pacific Mountains; Eocene,
Guayabal Formation of Mexico;
Eocene of California, Texas, Lou­
isiana, Mississippi, and Georgia;
Eocene in submarine core off
northeastern United States.
Oligocene of Mississippi, Alabama,
and Florida; upper Eocene of
Cuba ; upper Oligocene and lower
Miocene of Puerto Rico ; Miocene
of Eniwetok.
Oligocene of Cuba, Trinidad, and
Dominican Republic; Eocene of
Trinidad; middle Eocene to lower
Oligocene of Barbados; upper
Oligocene and lower Miocene of
Puerto Rico; Oligocene and Mio­
cene of Venezuela; Miocene of
Jamaica and Majorca.
Eocene of Cuba; Eocene of Missis­
sippi ; Oligocene of Trinidad; Eo­
cene in submarine core off north­
eastern United States; Eocene of
Saipan.
Eocene of Cuba and Trinidad; Oli­
gocene of Trinidad; middle and
upper Eocene of Barbados.
Oligocene of Cuba and Trinidad;
lower Oligocene of Barbados; Eo­
cene of Trinidad, Ecuador, and
Peru; Eocene in submarine core
off northeastern United States;
Miocene of California and Ja­
maica.
Lower Miocene of Trinidad; Mio­
cene? of Virgin Islands; Eocene
and Oligocene of Trinidad; mid­
dle Eocene to lower Oligocene of
Barbados.
Upper Eocene of New Zealand; Eo­
cene of Cuba.
Oligocene of Trinidad.
Oligocene of Mexico.
Eocene, Guayabal Formation of
Mexico; Eocene of California,
Louisiana and Georgia; Oligo­
cene of Alabama.
Table 2 gives the species of smaller Foraminifera of
Oligocene age found in the Mahlac Member of the
Alutom Formation on Guam. The few species noted
in a preliminary study that was made of these same
samples and incorporated into a report by Tracey and
others (1964, p. A22) included a few names not given
in the following table. These discrepancies have re­
sulted from the shifting of a species from one genus
to another (such as Cassidulina chipolensis to Cassi-
gerinella), from the synonymizing of one species with
another (such as Siphogenerina, seriata, a synonym of
8. striata), from the correction of identification (such
as Bolivina aff. B. tricosta for B. choctawensis), and