Grimpoteuthis megaptera is a species of umbrella octopus known from five specimens, collected by Addison Emery Verrill. Between two and three of these specimens may belong to different species.
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Yoldia myalis, or the comb yoldia, is a clam in the family Yoldiidae. It can be found along the Atlantic coast of North America, ranging from Labrador to Massachusetts, as well as along the Alaskan coast.
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Gymnobela agassizii is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.Subspecies: Gymnobela agassizii mexicana (Dall, 1889) (synonym: Pleurotomella agassizii mexicana Dall, 1889)
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Gymnobela blakeana is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.Subspecies: Gymnobela blakeana agria (Dall, 1889) (synonym: Pleurotomella (Gymnobela) blakeana agria Dall, 1889)
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