Tetragramma marticensis (COTTEAU, 1864) oral view
By ricardo
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Tetragramma marticensis (COTTEAU, 1864), oral view, Calcários Apinhoados da Costa D'Arnes formation, Upper Cenomanian, Portugal.
27 mm.
From the album:
Echinoidea from Calcários Apinhoados da Costa D'Arnes formation
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Photo Information
- Taken with Canon Canon EOS 550D
- Focal Length 50 mm
- Exposure Time 1/15
- f Aperture f/11.0
- ISO Speed 400
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