Diatoms (microscopic single-celled aquatic plants with a silica "shell"/frustule)

Middle Miocene Esmeralda Formation

Fossil Valley, Great Basin Desert, Nevada

All specimens magnified greater than 1000 times

All images from a specific technical document

Diatoms (microscopic single-celled aquatic algae with a silica "shell"--technically termed a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Left to right: Anomoeoneis lanceolata; Anomoeoneis nyensis; Anomoeoneis turgida. Specimens magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

Diatom (microscopic single-celled aquatic algae with a silica "shell"--technically termed a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Fragilaria crassa1a. Specimen magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

Right--Diatom (microscopic single-celled aquatic plant with a silica "shell"--technically termed a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Stauroneis debilis. Specimen magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

Diatom (microscopic single-celled aquatic algae with a silica "shell"--technically termed a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Surirella spicula. Specimen magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

Diatoms (microscopic single-celled algae with a silica "shell"--technically termed a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Cestodiscus cedarensis. Specimens magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

Diatom (microscopic single-celled algae with a silica "shell"--techically termed a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Cestodiscus fasciculatus. Specimen magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

Diatom (microscopic single-celled algae with a silica "shell"--technically termed a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Cestrodiscus stellatus. Specimen magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

Diatoms (microscopic single-celled algae with a silica "shell"--technically termed a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Melosira crassa. Specimens magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

Diatoms (microscopic single-celled algae with a silica "shell"--technically termed a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Pinnularia esmeraldensis. Specimens magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

Diatom (microscopic single-celled algae with a silica "shell"--technically termed a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Tetracyclus radiatus. Specimen magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

Diatom (microscopic single-celled algae with a silica "shell"--technically called a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Actinocyclus cedrus. Specimen magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

Diatom (microscopic single-celled algae with a silica "shell"--technically called a frustule) from the middle Miocene Esmeralda Formation, Fossil Valley, Great Basin Desert, Nevada. Actinocyclus cedrus. Specimen magnified over 1,000 times. Fossil Valley is now a federally protected area; unauthorized collecting is strictly verboten.

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