Fragiscutum

Fragiscutum is a genus of trilobites in the order Phacopida, that existed during the Silurian in what is now the United States. It was described by Whittington and Campbell in 1967, and the type species is Fragiscutum rhytium. The type locality was the Hardwood Mountain Formation in Maine.

No picture of Fragiscutum was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Fragiscutum, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
EncrinurinaePBDB
Diet
carnivorePBDB, for Trilobita
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Environment
marinePBDB, for Trilobita

Time the record covers

At least 2.3 million years on record.

The record covers at least 432.9 Mya to 430.6 Mya. No occurrence read is dated outside 443.1 Mya to 419.62 Mya.

Ordovician — about 0 of 4 occurrencesSilurian — about 4 of 4 occurrencesSilurianDevonian — about 0 of 4 occurrences444–443 Mya — about 0.0 occurrences443–442 Mya — about 0.1 occurrences442–441 Mya — about 0.1 occurrences441–440 Mya — about 0.1 occurrences440–440 Mya — about 0.1 occurrences440–439 Mya — about 0.1 occurrences439–438 Mya — about 0.1 occurrences438–437 Mya — about 0.1 occurrences437–436 Mya — about 0.1 occurrences436–435 Mya — about 0.1 occurrences435–435 Mya — about 0.1 occurrences435–434 Mya — about 0.1 occurrences434–433 Mya — about 0.1 occurrences433–432 Mya — about 0.1 occurrences432–431 Mya — about 0.1 occurrences431–431 Mya — about 0.2 occurrences431–430 Mya — about 0.3 occurrences430–429 Mya — about 0.3 occurrences429–428 Mya — about 0.3 occurrences428–427 Mya — about 0.3 occurrences427–426 Mya — about 0.3 occurrences426–426 Mya — about 0.1 occurrences426–425 Mya — about 0.1 occurrences425–424 Mya — about 0.0 occurrences424–423 Mya — about 0.0 occurrences423–422 Mya — about 0.0 occurrences422–422 Mya — about 0.0 occurrences422–421 Mya — about 0.0 occurrences421–420 Mya — about 0.0 occurrences420–419 Mya — about 0.0 occurrences432.9 Mya – 430.6 Mya443.6 Mya419.1 Mya

4 occurrences of Fragiscutum 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

4 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

Cape Phillips — 75.13°N, 95.00°WHenryhouse — 35.08°N, 98.24°WRumba — 58.82°N, 24.60°EHardwood Mountain — 45.72°N, 69.85°W

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

Fragiscutum and its relatives

Silurian

Where Fragiscutum and its relatives were recorded in the Silurian.

Found in the same rock

172 taxa

The Paleobiology Database records 4 sites for Fragiscutum, 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

4 references

Each of the 4 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. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content0

No picture of Fragiscutum was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Fragiscutum, or no answer at all. This entry cannot say which.

No 3D scan of Fragiscutum was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itEncrinurinae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Whittington and Campbell 1967