Illaenus (Parillaenus)

Parillaenus Jaanusson, 1954, a relative of Illaenus (Parillaenus) — not Illaenus (Parillaenus) itself

Not Illaenus (Parillaenus). This is Parillaenus Jaanusson, 1954, a relative — both are Illaenidae.

via GBIF · CC BY-NC 4.0 · via GBIF. 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
IllaenusPBDB
Diet
carnivorePBDB, for Corynexochida
Life habit
nektobenthicPBDB, for Corynexochida
Motility
actively mobilePBDB, for Corynexochida
Vision
well-developedPBDB, for Illaenus
Environment
marinePBDB, for Trilobita

Time the record covers

At least 30 million years on record.

The record covers at least 475.3 Mya to 445.2 Mya. No occurrence read is dated outside 481.7 Mya to 443.1 Mya.

Ordovician — about 30 of 30 occurrencesOrdovicianSilurian — about 0 of 30 occurrences482–481 Mya — about 0.1 occurrences481–480 Mya — about 0.2 occurrences480–478 Mya — about 0.2 occurrences478–477 Mya — about 0.2 occurrences477–476 Mya — about 0.2 occurrences476–474 Mya — about 0.1 occurrences470–469 Mya — about 0.0 occurrences469–468 Mya — about 0.1 occurrences468–466 Mya — about 0.1 occurrences466–465 Mya — about 0.1 occurrences465–464 Mya — about 0.1 occurrences464–462 Mya — about 0.1 occurrences462–461 Mya — about 0.1 occurrences461–460 Mya — about 0.6 occurrences460–458 Mya — about 0.6 occurrences458–457 Mya — about 0.1 occurrences453–452 Mya — about 5 occurrences452–450 Mya — about 2 occurrences450–449 Mya — about 5 occurrences449–448 Mya — about 5 occurrences448–446 Mya — about 4 occurrences446–445 Mya — about 4 occurrences445–444 Mya — about 2 occurrences444–442 Mya — about 0.9 occurrences475.3 Mya445.2 Mya482.5 Mya442.3 Mya

30 occurrences of Illaenus (Parillaenus) 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

30 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

13 formations

Boda Limestone — 61.17°N, 14.71°EBoda Limestone — 61.05°N, 15.20°EBoda Limestone — 61.15°N, 15.12°EBoda Limestone — 61.33°N, 14.55°ESolvang — 60.13°N, 10.28°ESolvang — 60.05°N, 10.18°ESolvang — 58.45°N, 8.76°ESolvang — 59.83°N, 10.51°ESørbakken — 60.05°N, 10.18°ESørbakken — 60.05°N, 10.18°EDolhir — 52.93°N, 3.18°WLangåra — 59.85°N, 10.49°EGagnum Limestone — 60.70°N, 10.67°EGagnum Limestone — 60.76°N, 10.69°ENakkholmen — 59.87°N, 10.58°ENakkholmen — 59.84°N, 10.54°EShihtzupu — 27.76°N, 106.92°EShihtzupu — 27.72°N, 107.02°ETudulinna — 58.74°N, 24.08°ETudulinna — 58.86°N, 24.08°EKalvsjø — 60.33°N, 10.39°EKjørrven — 60.27°N, 10.43°EKirtonryggen — 79.85°N, 17.67°EKirkley Bank — 54.43°N, 2.88°W

Loading coastlines…

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

Illaenus (Parillaenus) and its relatives

Ordovician

Where Illaenus (Parillaenus) and its relatives were recorded in the Ordovician.

Found in the same rock

541 taxa

The Paleobiology Database records 28 sites for Illaenus (Parillaenus), 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

10 references

Each of the 30 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 content1

Picture of Parillaenus Jaanusson, 1954

Source
GBIF
Credit
via GBIF
Licence
CC BY-NC 4.0
Commercial use
the licence does not allow it

No 3D scan of Illaenus (Parillaenus) 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 itIllaenus through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Jaanusson 1954