Onnia

Onnia is a genus of trilobites from the late Ordovician of Africa, Europe, North America, and South America. Fossils have been found in Canada (Quebec), the Czech Republic, France, Morocco, Portugal, Spain, the United Kingdom, and Venezuela.

A picture published with the record for Onnia.

TheoricienQuantique · Public Domain · 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
TrinucleidaePBDB
Diet
suspension feederPBDB, for Trinucleidae
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
blindPBDB
Environment
marinePBDB, for Trilobita

Time the record covers

At least 14 million years on record.

The record covers at least 459.7 Mya to 445.2 Mya. No occurrence read is dated outside 463.3 Mya to 443.1 Mya.

Ordovician — about 52 of 52 occurrencesOrdovicianSilurian — about 0 of 52 occurrences464–463 Mya — about 0.1 occurrences463–462 Mya — about 0.3 occurrences462–462 Mya — about 0.3 occurrences462–461 Mya — about 0.3 occurrences461–460 Mya — about 1 occurrence460–460 Mya — about 1 occurrence460–459 Mya — about 2 occurrences459–458 Mya — about 2 occurrences458–457 Mya — about 2 occurrences457–457 Mya — about 2 occurrences457–456 Mya — about 2 occurrences456–455 Mya — about 2 occurrences455–455 Mya — about 2 occurrences455–454 Mya — about 2 occurrences454–453 Mya — about 2 occurrences453–452 Mya — about 4 occurrences452–452 Mya — about 5 occurrences452–451 Mya — about 5 occurrences451–450 Mya — about 5 occurrences450–450 Mya — about 4 occurrences450–449 Mya — about 1 occurrence449–448 Mya — about 0.6 occurrences448–448 Mya — about 0.6 occurrences448–447 Mya — about 0.6 occurrences447–446 Mya — about 0.6 occurrences446–445 Mya — about 0.6 occurrences445–445 Mya — about 0.5 occurrences445–444 Mya — about 0.5 occurrences444–443 Mya — about 0.5 occurrences443–443 Mya — about 0.1 occurrences459.7 Mya445.2 Mya463.8 Mya442.6 Mya

52 occurrences of Onnia 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

52 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

19 formations

Dufton Shales — 54.72°N, 2.48°WBancos Mixtos — 39.00°N, 4.00°WBancos Mixtos — 38.78°N, 4.83°WBancos Mixtos — 38.77°N, 4.50°WBancos Mixtos — 38.77°N, 4.62°WLiben — 50.00°N, 14.00°ELiben — 49.68°N, 13.47°EBohdalec — 50.00°N, 14.00°EBohdalec — 50.00°N, 14.38°EPizarras Carretera — 39.00°N, 4.00°WPizarras Carretera — 39.00°N, 6.00°WPizarras Carretera — 39.00°N, 5.00°WOnny Shale — 52.60°N, 2.55°WOnny Shale — 52.00°N, 4.00°WZahorany — 50.00°N, 14.00°EUpper Ktaoua — 31.08°N, 5.25°WUpper Ktaoua — 30.77°N, 5.66°WCantera Shale — 38.90°N, 4.06°WLetna — 49.97°N, 14.07°ELetna — 50.00°N, 14.00°EDobrotiva — 50.00°N, 14.00°ECaparo — 8.00°N, 71.00°WSchistes d'Ecalgrain — 49.50°N, 1.60°WRosan — 48.00°N, 4.00°WOnnia Shale — 39.41°N, 7.24°WLouredo — 40.00°N, 8.00°WPorto de Santa Anna — 40.00°N, 8.00°WGrand Auverne — 47.00°N, 1.00°WGlauzy — 43.54°N, 3.31°E

Loading coastlines…

The named rock units Onnia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Onnia and its relatives

Ordovician

Where Onnia and its relatives were recorded in the Ordovician.

Found in the same rock

515 taxa

The Paleobiology Database records 51 sites for Onnia, 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

24 references

Each of the 52 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. 12 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 Onnia

Credit
TheoricienQuantique
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan is on file for Onnia.

This entry was cached before the site began recording what Smithsonian Open Access, MorphoSource and Sketchfab did, so a search that failed cannot be told from one that found nothing.

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 itTrinucleidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Bancroft 1933