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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
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Images of
Tetracyclus
emarginatus
(Ehrenb.) W.Smith 1856
Type Specimen
Slide Number
L-14-5 (12H-2 26 (70))
Site ID
ILL 2022-71 (VC 12H-2 26 (70))
Site Name
Valles Caldera, New Mexico
Coordinates
35.90, 106.533
Caption
Valve view
Notes
Pleistocene-aged sediment core sample from the Valle Grande in the Valles Caldera volcanic complex
Scalebar = 10 µm
Slide Number
L-14-6 (12H-2 126 (71))
Site ID
ILL 2022-72 (VC 12H-2 126 (71))
Site Name
Valles Caldera, New Mexico
Coordinates
35.90, 106.533
Caption
Valve view
Notes
Pleistocene-aged sediment core sample from the Valle Grande in the Valles Caldera volcanic complex
Scalebar = 10 µm
Slide Number
L-14-6 (12H-2 126 (71))
Site ID
ILL 2022-72 (VC 12H-2 126 (71))
Site Name
Valles Caldera, New Mexico
Coordinates
35.90, 106.533
Caption
Valve view
Notes
Pleistocene-aged sediment core sample from the Valle Grande in the Valles Caldera volcanic complex
Scalebar = 10 µm
Slide Number
L-14-6 (12H-2 126 (71))
Site ID
ILL 2022-72 (VC 12H-2 126 (71))
Site Name
Valles Caldera, New Mexico
Coordinates
35.90, 106.533
Caption
Valve view
Notes
Pleistocene-aged sediment core sample from the Valle Grande in the Valles Caldera volcanic complex
Scalebar = 10 µm
Slide Number
AFN 46 (slide with specimen not deposited at ILL but same sample material as ILL 2022-46)
Site ID
ILL 2022-46 (AFN DC 46)
Site Name
Ashfall fossil deposit, Antelope County, Nebraska
Coordinates
42.42, 98.1557
Caption
Mantle view of intact valve with girdle bands
Notes
Ashfall fossil deposit, Antelope county, Nebraska; sampled in the upper sections of the ash deposit within the state park.
Scalebar = 10 µm
Slide Number
L-14-6 (12H-2 126)
Site ID
ILL 2022-72 (VC 12H-2 126)
Site Name
Valles Caldera, New Mexico
Coordinates
35.90, 106.533
Caption
Single girdle band view
Notes
Pleistocene-aged sediment core sample from the Valle Grande in the Valles Caldera volcanic complex
Scalebar = 10 µm