Illaenidae

The Illaenidae are a family of trilobites in the order Corynexochida. 223 currently accepted species in 24 genera are known from the Ordovician. Some scholars include the Panderiidae in the Illaenidae, but this is not generally supported.

Illaenidae

Dwergenpaartje · 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
CorynexochidaPBDB
Diet
carnivorePBDB, for Corynexochida
Life habit
nektobenthicPBDB, for Corynexochida
Motility
actively mobilePBDB, for Corynexochida
Environment
marinePBDB, for Trilobita

Time the record covers

At least 50 million years on record.

The record covers at least 477.1 Mya to 426.7 Mya. No occurrence read is dated outside 488.9 Mya to 422.7 Mya.

Cambrian — about 0 of 1432 occurrencesOrdovician — about 1280 of 1432 occurrencesOrdovicianSilurian — about 152 of 1432 occurrencesSilurian490–488 Mya — about 0.1 occurrences488–486 Mya — about 2 occurrences486–483 Mya — about 4 occurrences483–481 Mya — about 5 occurrences481–479 Mya — about 6 occurrences479–476 Mya — about 9 occurrences476–474 Mya — about 16 occurrences474–472 Mya — about 16 occurrences472–470 Mya — about 76 occurrences470–467 Mya — about 86 occurrences467–465 Mya — about 89 occurrences465–463 Mya — about 81 occurrences463–460 Mya — about 99 occurrences460–458 Mya — about 122 occurrences458–456 Mya — about 133 occurrences456–454 Mya — about 123 occurrences454–451 Mya — about 134 occurrences451–449 Mya — about 116 occurrences449–447 Mya — about 84 occurrences447–444 Mya — about 64 occurrences444–442 Mya — about 31 occurrences442–440 Mya — about 30 occurrences440–437 Mya — about 31 occurrences437–435 Mya — about 28 occurrences435–433 Mya — about 28 occurrences433–431 Mya — about 10 occurrences431–428 Mya — about 5 occurrences428–426 Mya — about 4 occurrences426–424 Mya — about 1 occurrence424–421 Mya — about 0.3 occurrences477.1 Mya426.7 Mya490 Mya421 Mya

1,432 occurrences of Illaenidae 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

1,432 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

346 formations

Mingan — 50.20°N, 63.50°WMingan — 50.21°N, 63.45°WMingan — 50.21°N, 63.62°WMingan — 50.21°N, 64.13°WMingan — 50.21°N, 63.75°WMingan — 50.21°N, 63.90°WCrown Point — 44.03°N, 73.42°WCrown Point — 44.61°N, 73.42°WCrown Point — 44.84°N, 73.36°WCrown Point — 44.86°N, 73.33°WCrown Point — 44.58°N, 73.53°WCrown Point — 44.87°N, 73.45°WCrown Point — 44.88°N, 73.44°WAntelope Valley — 39.09°N, 116.85°WAntelope Valley — 36.88°N, 116.65°WAntelope Valley — 38.53°N, 116.40°WAntelope Valley — 37.34°N, 115.38°WAntelope Valley — 37.30°N, 115.80°WAntelope Valley — 39.20°N, 116.25°WAntelope Valley — 39.00°N, 116.62°WAntelope Valley — 36.42°N, 116.62°WAntelope Valley — 38.82°N, 116.50°WDay Point — 44.62°N, 73.44°WDay Point — 44.63°N, 73.33°WDay Point — 44.88°N, 73.46°WDay Point — 44.83°N, 73.35°WDay Point — 44.83°N, 73.36°WDay Point — 44.86°N, 73.33°WDay Point — 44.68°N, 73.45°WValcour — 44.87°N, 73.41°WValcour — 44.86°N, 73.34°WValcour — 44.61°N, 73.41°WValcour — 44.30°N, 73.31°WHolen — 57.23°N, 16.96°EHolen — 57.37°N, 17.08°EHolen — 57.32°N, 17.00°EHolen — 57.15°N, 16.92°EHolen — 57.03°N, 16.88°EHolen — 57.00°N, 16.82°EHolen — 57.17°N, 16.94°EHolen — 56.62°N, 16.56°EEsbataottine — 62.00°N, 127.00°WEsbataottine — 61.72°N, 125.93°WEsbataottine — 61.63°N, 125.75°WEsbataottine — 61.63°N, 125.73°WEdinburg — 36.88°N, 81.68°WEdinburg — 37.74°N, 79.51°WTable Point — 50.70°N, 57.41°WTable Point — 50.36°N, 57.54°WTable Point — 49.37°N, 57.72°WBalclatchie — 55.24°N, 4.78°WBalclatchie — 54.84°N, 4.05°WBalclatchie — 55.17°N, 4.87°WBalclatchie — 55.31°N, 4.80°WBoda Limestone — 60.97°N, 15.15°EBoda 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 — 60.00°N, 11.00°ESolvang — 60.13°N, 10.28°ESolvang — 60.05°N, 10.18°ESolvang — 59.85°N, 10.73°ESolvang — 61.33°N, 8.80°ESolvang — 59.90°N, 10.63°ESolvang — 59.82°N, 10.61°ESolvang — 58.45°N, 8.76°ESolvang — 59.87°N, 10.51°ESolvang — 59.83°N, 10.51°EPortixeddu — 39.44°N, 8.41°EPortixeddu — 39.46°N, 8.44°EPortixeddu — 39.27°N, 8.47°EPortixeddu — 39.23°N, 8.50°EScotch Grove — 42.00°N, 91.00°WScotch Grove — 41.92°N, 90.92°WScotch Grove — 41.90°N, 90.60°WScotch Grove — 42.00°N, 90.50°WScotch Grove — 42.12°N, 91.13°WScotch Grove — 42.48°N, 90.87°WScotch Grove — 41.85°N, 90.18°WScotch Grove — 42.17°N, 91.10°WDomusnovas — 40.34°N, 8.69°EDomusnovas — 39.33°N, 8.67°EDomusnovas — 39.44°N, 8.42°EDomusnovas — 39.24°N, 8.49°EJupiter — 49.51°N, 63.63°WJupiter — 49.47°N, 63.12°WJupiter — 49.38°N, 63.51°WJupiter — 49.56°N, 63.35°WJupiter — 49.38°N, 63.40°WJupiter — 49.24°N, 62.29°WJupiter — 49.14°N, 62.36°WJupiter — 49.14°N, 62.34°WJupiter — 49.43°N, 63.12°WJupiter — 49.47°N, 63.16°WWhite Head — 48.50°N, 64.25°WWhite Head — 48.57°N, 64.42°WWhite Head — 46.88°N, 60.35°WWhite Head — 48.58°N, 68.18°WWhite Head — 48.50°N, 64.23°WVolkhov — 59.97°N, 32.57°EVolkhov — 59.82°N, 32.20°EFuruberget — 60.36°N, 10.41°EFuruberget — 60.36°N, 10.49°EFuruberget — 60.35°N, 10.46°EFuruberget — 60.33°N, 10.55°EZitai — 29.78°N, 111.13°EZitai — 29.31°N, 111.29°ELlanfallteg — 52.00°N, 5.00°WLlanfallteg — 51.83°N, 4.67°WLlanfallteg — 51.83°N, 4.77°WLlanfallteg — 51.85°N, 4.92°WLiben — 50.00°N, 14.00°ELiben — 49.72°N, 13.57°ELiben — 49.80°N, 13.63°ELiben — 49.82°N, 13.70°ELiben — 49.68°N, 13.47°ELiben — 49.82°N, 13.75°ETable Cove — 50.36°N, 57.54°WTable Cove — 50.18°N, 57.62°WDunleith — 42.00°N, 90.50°W

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The named rock units Illaenidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 322 further formations hold fewer occurrences each and are not listed. 94 occurrences have no formation on record, which is common for older literature.

Illaenidae and its relatives

Ordovician

Where Illaenidae and its relatives were recorded in the Ordovician.

Found in the same rock

2,174 taxa

The Paleobiology Database records 1,069 sites for Illaenidae, and this reads 240 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

284 references

Each of the 1,432 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. 272 further references are not listed. 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 Illaenidae

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

No 3D scan of Illaenidae 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 itCorynexochida through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hawle and Corda 1847