Naraoia

Naraoia is a genus of small-to-average-size marine arthropods within the family Naraoiidae, that lived from the early Cambrian to the late Silurian period. The species are characterized by a large alimentary system and sideways oriented antennas.

Naraoia

Andrew D. Bond,Gregory D. Edgecombe · CC BY 4.0 · 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
NaraoiidaePBDB
Diet
carnivorePBDB
Life habit
nektobenthicPBDB
Motility
actively mobilePBDB
Vision
blindPBDB, for Nektaspidida

Time the record covers

At least 93 million years on record.

The record covers at least 516 Mya to 422.7 Mya. No occurrence read is dated outside 521 Mya to 419.62 Mya.

Cambrian — about 102 of 104 occurrencesCambrianOrdovician — about 1 of 104 occurrencesOrdovicianSilurian — about 1 of 104 occurrencesSilurianDevonian — about 0 of 104 occurrences523–520 Mya — about 14 occurrences520–516 Mya — about 33 occurrences516–512 Mya — about 6 occurrences512–509 Mya — about 6 occurrences509–505 Mya — about 26 occurrences505–502 Mya — about 9 occurrences502–498 Mya — about 6 occurrences498–495 Mya — about 2 occurrences474–470 Mya — about 0.1 occurrences470–467 Mya — about 0.3 occurrences467–463 Mya — about 0.3 occurrences463–460 Mya — about 0.3 occurrences460–456 Mya — about 0.1 occurrences425–421 Mya — about 0.5 occurrences421–418 Mya — about 0.5 occurrences516 Mya422.7 Mya523 Mya418 Mya

104 occurrences of Naraoia on record, most of them in the Cambrian. 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

104 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

17 formations

Burgess Shale — 51.44°N, 116.47°WBurgess Shale — 51.03°N, 115.83°WBurgess Shale — 51.39°N, 116.43°WYu'anshan — 25.33°N, 103.50°EYu'anshan — 24.77°N, 102.58°EYuanshan — 24.81°N, 102.58°EYuanshan — 24.84°N, 102.41°EYuanshan — 25.40°N, 103.38°EYuanshan — 25.72°N, 103.99°EYuanshan — 24.00°N, 102.00°EQiongzhusi — 24.65°N, 102.97°EQiongzhusi — 24.68°N, 102.98°EQiongzhusi — 24.63°N, 102.95°EQiongzhusi — 24.72°N, 102.95°EStephen — 51.17°N, 116.08°WBalang — 28.37°N, 109.34°EBalang — 28.42°N, 109.42°EMarjum — 39.00°N, 113.00°WMarjum — 39.27°N, 113.31°WKaili — 27.00°N, 107.00°EKaili — 26.75°N, 108.41°ENiutitang — 27.60°N, 106.71°ENiutitang — 27.67°N, 106.68°EWheeler Shale — 39.29°N, 113.31°WDuchesnay — 50.63°N, 115.60°WShuijingtuo — 30.50°N, 111.16°EMurero — 41.13°N, 1.45°WLangston — 42.17°N, 112.21°WBertie — 42.93°N, 79.00°WConasauga — 34.17°N, 85.40°WŠárka — 50.10°N, 14.36°E

Loading coastlines…

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

Naraoia and its relatives

Cambrian

Where Naraoia and its relatives were recorded in the Cambrian.

Found in the same rock

666 taxa

The Paleobiology Database records 81 sites for Naraoia, 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

30 references

Each of the 104 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. 18 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 Naraoia

Credit
Andrew D. Bond,Gregory D. Edgecombe
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itNaraoiidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1912