Portland Formation

129 distinct taxa, from 495 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.

Massachusetts, Connecticut · US

116 taxa · 481 fossils · 201–193 Mya

Filed under the Agawam Group.

Macrostrat places this rock in the Newark Supergroup, and dates it 195–171 Ma. Macrostrat’s own record

Portland Formation — 41.57°N, 72.63°WPortland Formation — 42.26°N, 72.57°WPortland Formation — 41.81°N, 72.55°WPortland Formation — 42.10°N, 72.59°WPortland Formation — 41.90°N, 72.57°WPortland Formation — 42.59°N, 72.60°WPortland Formation — 42.61°N, 72.51°WPortland Formation — 42.52°N, 72.55°WPortland Formation — 41.73°N, 72.66°WPortland Formation — 41.69°N, 72.64°WPortland Formation — 42.17°N, 72.67°WPortland Formation — 42.16°N, 72.58°WPortland Formation — 41.55°N, 72.69°WPortland Formation — 42.05°N, 72.56°WPortland Formation — 41.92°N, 72.70°WPortland Formation — 42.29°N, 72.55°WPortland Formation — 41.97°N, 72.68°WPortland Formation — 41.92°N, 72.50°W

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18 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

The 40 most often recorded, of 116.

England, Oxfordshire · UK

13 taxa · 14 fossils · 149–143 Mya

Macrostrat places this rock in the Portland Group, and dates it 149–143 Ma. Macrostrat’s own record

Portland Formation — 51.75°N, 1.18°W

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1 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

What else lived thenRank the rock of a period

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