''Coleoloides'', or the coleolids, are a genus of

Cambrian The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...

small shelly fossils The small shelly fauna, small shelly fossils (SSF), or early skeletal fossils (ESF) are mineralized fossils, many only a few millimetres long, with a nearly continuous record from the latest stages of the Ediacaran to the end of the Early Cambr ...

with an aragonite skeleton. They were first described in 1889 by Charles Doolittle Walcott as members of the pteropods. Their affinity is unknown but they were probably produced by an organism of the annelid grade of complexity. Calcium carbonate fossils of coleolids have been found at

Newfoundland Newfoundland and Labrador (; french: Terre-Neuve-et-Labrador; frequently abbreviated as NL) is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region ...

clustered together, oriented vertically.

References

Cambrian animals of Europe Paleozoic life of Newfoundland and Labrador Paleozoic life of Nova Scotia Paleozoic life of Quebec {{cambrian-stub