Arctinurus boltoni

Arctinurus boltoni is a large lichid trilobite of the mid-Silurian. This trilobite reached about eight inches in length, though the normal adult carapace was about four inches. It lived in moderately deep-water in semi-tropical regions. Arctinurus fossils have been found in Europe and North America.

Arctinurus boltoni

Smokeybjb · CC BY-SA 3.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.

On record

Recorded, not inferred
Sits inside
ArctinurusPBDB
Diet
carnivorePBDB, for Lichida
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Lichidae
Environment
marinePBDB, for Trilobita

Time the record covers

At most 11 million years on record.

Every occurrence read is dated to somewhere between 432.9 Mya and 422.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Silurian — about 7 of 7 occurrencesSilurian433–433 Mya — about 0.3 occurrences433–432 Mya — about 0.4 occurrences432–432 Mya — about 0.4 occurrences432–432 Mya — about 0.4 occurrences432–431 Mya — about 0.4 occurrences431–431 Mya — about 0.4 occurrences431–430 Mya — about 0.4 occurrences430–430 Mya — about 0.4 occurrences430–430 Mya — about 0.4 occurrences430–429 Mya — about 0.4 occurrences429–429 Mya — about 0.4 occurrences429–429 Mya — about 0.4 occurrences429–428 Mya — about 0.4 occurrences428–428 Mya — about 0.4 occurrences428–427 Mya — about 0.4 occurrences427–427 Mya — about 0.4 occurrences427–427 Mya — about 0.4 occurrences427–426 Mya — about 0.0 occurrences426–426 Mya — about 0.0 occurrences426–426 Mya — about 0.0 occurrences426–425 Mya — about 0.0 occurrences425–425 Mya — about 0.0 occurrences425–424 Mya — about 0.0 occurrences424–424 Mya — about 0.0 occurrences424–424 Mya — about 0.0 occurrences424–423 Mya — about 0.0 occurrences423–423 Mya — about 0.0 occurrences423–423 Mya — about 0.0 occurrences433.4 Mya422.2 Mya

7 occurrences of Arctinurus boltoni on record, most of them in the Silurian. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.

When

7 occurrences

These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.

Found in

4 formations

Rochester Shale — 43.10°N, 79.06°WRochester Shale — 43.00°N, 79.00°WRochester Shale — 43.17°N, 78.68°WRacine Dolomite — 41.12°N, 88.02°WWaldron Shale — 39.00°N, 86.00°WRochester Shale — 43.03°N, 79.28°W

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The named rock units Arctinurus boltoni has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Arctinurus boltoni and its relatives

Silurian

Where Arctinurus boltoni and its relatives were recorded in the Silurian.

Found in the same rock

103 taxa

The Paleobiology Database records 7 sites for Arctinurus boltoni, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.

This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.

Entered from

3 references

Each of the 7 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Arctinurus boltoni

Credit
Smokeybjb
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Arctinurus boltoni was found in Sketchfab.

Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itArctinurus through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Bigsby 1825)