Lucas Formation

47 distinct taxa, from 75 fossil occurrences the Paleobiology Database records under this name.

The Paleobiology Database files this name in 2 countries. That can be one body of rock crossing a border, or two rocks that happen to share a name. The database does not say which, so nothing below is added across them.

Michigan, Ohio · US

32 taxa · 45 fossils · 393–388 Mya

Filed under the Detroit River Group. Members recorded: Anderdon Limestone, Horner.

Lucas Formation — 42.17°N, 83.18°WLucas Formation — 41.68°N, 83.74°WLucas Formation — 42.10°N, 83.19°W

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3 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.

When

What has been found

Ontario · CA

26 taxa · 30 fossils · 393–388 Mya

Filed under the Detroit River Group. Members recorded: Anderdon Limestone.

Lucas Formation — 42.13°N, 83.03°WLucas Formation — 43.04°N, 80.86°W

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2 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.

When

What has been found

Counts are of occurrence records, which measure the rock and the fieldwork together.