60.2 MB (4.8 MB compressed)
5616 x 3744 pixels
47.5 x 31.8 cm ⏐ 18.7 x 12.5 in (300dpi)
DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY
Lopha ap. These are marine bivalve molluscs in the family Ostreidae. They are known from the upper Triassic period to present times. The shell is characteristically curved with a strongly ribbed outer valve, the smaller inside one being flat. These specimen are from late Jurassic deposits in Tulear Province, Madagascar. Actual length is 10 cm.
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