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Veryhachium
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Description
Stratigraphy
Literature
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Species
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Name
Original Description
balticum
Eisenack, A. (1951)
geometricum
Deflandre, G. (1945a)
hermesinoides
Wetzel, O. (1940)
hyalodermum
Cookson, I.C. (1956)
lairdii
Deunff, J. (1959)
mensula
Wetzel, O. (1933b)
singulare
Firtion, F. (1952)
trispinosum ssp. geometricum
Deflandre, G. (1945a)
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