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"The <em>Lingula anatina</em> has a long peduncle issuing from between the umbones. The valves are nearly equal, horny, and flexible. It is found in the Indian Ocean." &mdash; Goodrich, 1859

Lingula anatina

"The Lingula anatina has a long peduncle issuing from between the umbones. The valves are nearly…

The Lingula have tongue-shaped shells with a long fleshy stalk, or pedicle, with which the animal burrows into sandy or muddy sediments.

Lingula

The Lingula have tongue-shaped shells with a long fleshy stalk, or pedicle, with which the animal burrows…

The Lingula antigua is a little bivalve shell belonging at the bottom of the class Brachiopoda. The inarticulate brachiopod genus Lingula is the oldest, relatively unchanged animal known. The oldest lingulid fossils are found in Lower Cambrian rocks dating to roughly 550 million years ago. The origin of brachiopods is unknown. A possible ancestor is a sort of ancient "armored slug" known as Halkieria that had small brachiopod-like shields on its head and tail.

Lingula Antigua

The Lingula antigua is a little bivalve shell belonging at the bottom of the class Brachiopoda. The…

The Lingula prima is a little bivalve shell belonging at the bottom of the class Brachiopoda. The inarticulate brachiopod genus Lingula is the oldest, relatively unchanged animal known. The oldest lingulid fossils are found in Lower Cambrian rocks dating to roughly 550 million years ago. The origin of brachiopods is unknown. A possible ancestor is a sort of ancient "armored slug" known as Halkieria that had small brachiopod-like shields on its head and tail.

Lingula Prima

The Lingula prima is a little bivalve shell belonging at the bottom of the class Brachiopoda. The inarticulate…