Ischyrotoma twenhofeli

Ischyrotoma twenhofeli

via iDigBio · CC0 · via iDigBio. 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
IschyrotomaPBDB
Diet
deposit feederPBDB, for Proetida
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Dimeropygidae
Environment
marinePBDB, for Trilobita

Time the record covers

At most 14 million years on record.

Every occurrence read is dated to somewhere between 471.3 Mya and 457.3 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 3 of 3 occurrencesOrdovician471–471 Mya — about 0.1 occurrences471–470 Mya — about 0.1 occurrences470–470 Mya — about 0.1 occurrences470–469 Mya — about 0.1 occurrences469–469 Mya — about 0.1 occurrences469–468 Mya — about 0.1 occurrences468–468 Mya — about 0.1 occurrences468–467 Mya — about 0.1 occurrences467–467 Mya — about 0.1 occurrences467–466 Mya — about 0.1 occurrences466–466 Mya — about 0.1 occurrences466–465 Mya — about 0.1 occurrences465–465 Mya — about 0.1 occurrences465–464 Mya — about 0.1 occurrences464–464 Mya — about 0.1 occurrences464–463 Mya — about 0.1 occurrences463–463 Mya — about 0.1 occurrences463–462 Mya — about 0.1 occurrences462–462 Mya — about 0.1 occurrences462–461 Mya — about 0.1 occurrences461–461 Mya — about 0.1 occurrences461–460 Mya — about 0.1 occurrences460–460 Mya — about 0.1 occurrences460–459 Mya — about 0.1 occurrences459–459 Mya — about 0.1 occurrences459–458 Mya — about 0.1 occurrences458–458 Mya — about 0.1 occurrences458–457 Mya — about 0.1 occurrences471.8 Mya456.8 Mya

3 occurrences of Ischyrotoma twenhofeli on record, most of them in the Ordovician. 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

3 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

1 formation

Valhallfonna — 79.80°N, 17.76°E

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The named rock units Ischyrotoma twenhofeli has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Ischyrotoma twenhofeli and its relatives

Ordovician

Where Ischyrotoma twenhofeli and its relatives were recorded in the Ordovician.

Found in the same rock

81 taxa

The Paleobiology Database records 3 sites for Ischyrotoma twenhofeli, 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 3 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 Ischyrotoma twenhofeli

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Ischyrotoma twenhofeli 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.

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

Keep going

What may have been alongside itIschyrotoma through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Raymond 1925