Macaronichnus

Macaronichnus is an ichnogenus of trace fossil.

No picture of Macaronichnus was found. Wikipedia and Wikidata were searched and had none. iDigBio and GBIF were not searched: the Paleobiology Database does not place Macaronichnus firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

On record

Recorded, not inferred
Sits inside
IchnofossilsPBDB

Time the record covers

At least 127 million years on record.

The record covers at least 143.1 Mya to 15.98 Mya. No occurrence read is dated outside 149.2 Mya to 2.58 Mya.

Late Jurassic — about 18 of 21 occurrencesEarly Cretaceous — about 0 of 21 occurrencesLate Cretaceous — about 0 of 21 occurrencesPaleocene — about 0 of 21 occurrencesEocene — about 0 of 21 occurrencesOligocene — about 0 of 21 occurrencesMiocene — about 3 of 21 occurrencesMiocenePliocene — about 0 of 21 occurrencesPleistocene — about 0 of 21 occurrences152–147 Mya — about 6 occurrences147–142 Mya — about 12 occurrences25–20 Mya — about 0.3 occurrences20–15 Mya — about 0.9 occurrences15–10 Mya — about 1 occurrence10–5.1 Mya — about 0.5 occurrences5.1–0 Mya — about 0.2 occurrences143.1 Mya15.98 Mya152 Mya0 Mya

21 occurrences of Macaronichnus on record. 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

21 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

2 formations

Kap Leslie — 70.48°N, 21.97°WBerchem — 51.21°N, 4.43°E

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The named rock units Macaronichnus 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.

Found in the same rock

75 taxa

The Paleobiology Database records 20 sites for Macaronichnus, 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

4 references

Each of the 21 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 content0

No picture of Macaronichnus was found. Wikipedia and Wikidata were searched and had none.

iDigBio and GBIF were not searched: the Paleobiology Database does not place Macaronichnus firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

No 3D scan of Macaronichnus 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 itIchnofossils through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Clifton and Thompson 1978