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Margaritifera
Schumacher, 1816
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Pronounced
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Mar-Garrit-if-ear-uh
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Meaning
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Classification
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Bivalvia,
Margaritiferidae Haas, 1940
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Stratigraphy
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Material
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Shell
heavy, thick and compressed without posterior lamellar teeth.
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Simon
Clabby 2006
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Nippononaia
Suzuki, 1941
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Pronounced
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Nip-on-on-eye-uh
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Meaning
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Classification
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Bivalvia,
Unionidae Fleming, 1823
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Stratigraphy
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Material
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Subelliptical,
medium-sized, with many acute V-shaped ridges centreing
on line from beak to middle of ventral margin which is finely
crenulate
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Simon
Clabby 2006
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Unio
Philipson, 1788
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Pronounced
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You-nee-oh
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Meaning
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Classification
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Bivalvia,
Unionidae Fleming, 1823
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Stratigraphy
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Material
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Posterior
slope generally distinct, coarse ridges on umbo looped or
broken, remainder of shell smooth, periostracum with or
without rays.
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Simon
Clabby 2006
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