Urosalpinx leucostomoides (Sowerby in Darwin, 1878) Urosalpinx ortmanni is an extinct species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.

[1] This species resembles † Urosalpinx archipatagonica Ihering 1907, found at the same location.

Fossils were found in Early Miocene strata of Patagonia, Argentina (age range: 23.03 to 15.97 Ma).

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