Estonioceratidae
The Estonioceratidae are a family of loosely coiled tarphycerids in which the inner side of the whorls, which forms the dorsum, is rounded or flat with no impression, and in which the siphuncle, composed of thick tubular segments, is located ventrally. The Estonioceratidae seem to form a link between the ancestral Bassleroceratidae and the more tightly coiled Tarphyceratidae.
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Estonioceratidae
The Estonioceratidae are a family of loosely coiled tarphycerids in which the inner side of the whorls, which forms the dorsum, is rounded or flat with no impression, and in which the siphuncle, composed of thick tubular segments, is located ventrally. The Estonioceratidae seem to form a link between the ancestral Bassleroceratidae and the more tightly coiled Tarphyceratidae.
has abstract
The Estonioceratidae are a fam ...... ightly coiled Tarphyceratidae.
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Wikipage page ID
28,719,794
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1,010,379,190
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authority
Hyatt in Zittel, 1900
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fossil range
L Ordovician
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image caption
Estonioceras ariense
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taxon
Estonioceratidae
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hypernym
comment
The Estonioceratidae are a fam ...... ightly coiled Tarphyceratidae.
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label
Estonioceratidae
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