Nereites

Nereites is an ichnogenus of trace fossil. Modern tracemakers of incipient Nereites include worm-like organisms, horseshoe crabs and hermit crabs. Historically, two models have been proposed for Nereites:in the ‘worm model’, Nereites is a feeding burrow produced by wormlike organisms, probing and backfilling laterally in the ‘arthropod model’, the characteristic lobes are pressure-release structures made by arthropod legs. According to this interpretation, Nereites is a locomotion trail

A picture published with the record for Nereites. What it shows has not been checked.

Richdebtomdom · 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
IchnofossilsPBDB

Time the record covers

At least 501 million years on record.

The record covers at least 506.5 Mya to 5.333 Mya. No occurrence read is dated outside 538.8 Mya to 3.6 Mya.

Cambrian — about 2 of 9 occurrencesCambrianOrdovician — about 0 of 9 occurrencesSilurian — about 1 of 9 occurrencesDevonian — about 2 of 9 occurrencesDevonianCarboniferous — about 1 of 9 occurrencesCarboniferousPermian — about 0 of 9 occurrencesEarly Triassic — about 0 of 9 occurrencesMiddle Triassic — about 0 of 9 occurrencesLate Triassic — about 0 of 9 occurrencesEarly Jurassic — about 0 of 9 occurrencesMiddle Jurassic — about 0 of 9 occurrencesLate Jurassic — about 0 of 9 occurrencesEarly Cretaceous — about 0 of 9 occurrencesLate Cretaceous — about 0 of 9 occurrencesPaleocene — about 0 of 9 occurrencesEocene — about 1 of 9 occurrencesOligocene — about 0 of 9 occurrencesMiocene — about 1 of 9 occurrencesPliocene — about 1 of 9 occurrencesPleistocene — about 0 of 9 occurrences550–531 Mya — about 0.2 occurrences531–513 Mya — about 0.6 occurrences513–495 Mya — about 1 occurrence458–440 Mya — about 0.1 occurrences440–421 Mya — about 0.8 occurrences421–403 Mya — about 0.7 occurrences403–385 Mya — about 1 occurrence330–311 Mya — about 1 occurrence55–37 Mya — about 1 occurrence37–18 Mya — about 0.5 occurrences18–0 Mya — about 2 occurrences506.5 Mya5.333 Mya550 Mya0 Mya

9 occurrences of Nereites 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

9 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

6 formations

Pimenteira — 8.00°S, 42.50°WPimenteira — 7.00°S, 42.00°WJince — 49.78°N, 13.97°EDhaulagiri — 30.34°N, 78.16°EEzkaba Sandstone — 42.82°N, 1.67°WIpún Beds — 44.61°S, 74.76°WPottsville — 33.94°N, 87.22°W

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The named rock units Nereites 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.

Nereites and its relatives

Cambrian

Where Nereites and its relatives were recorded in the Cambrian.

Found in the same rock

71 taxa

The Paleobiology Database records 6 sites for Nereites, 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

8 references

Each of the 9 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 content2

Picture of Nereites

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

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

Smithsonian Open Access was 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 itIchnofossils through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. MacLeay 1839