Diplocraterion

Diplocraterion is an ichnogenus describing vertical U-shaped burrows having a spreite between the two limbs of the U. The spreite of an individual Diplocraterion trace can be either protrusive or retrusive. Some ichnospecies have both types. The presence/absence of funnel-shaped openings should not be used as an ichnotaxobase due to the high probability that the upper portions of the trace may have been eroded away. Observation of the orientation of Diplocraterion in the field is frequently used to determine the way up of rock strata at outcrop.

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

Jstuby at en.wikipedia · 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
IchnofossilsPBDB

Time the record covers

At least 372 million years on record.

The record covers at least 516 Mya to 143.1 Mya. No occurrence read is dated outside 538.8 Mya to 125.77 Mya.

Cambrian — about 14 of 31 occurrencesCambrianOrdovician — about 4 of 31 occurrencesOrdovicianSilurian — about 0 of 31 occurrencesDevonian — about 1 of 31 occurrencesDevonianCarboniferous — about 0 of 31 occurrencesPermian — about 0 of 31 occurrencesEarly Triassic — about 0 of 31 occurrencesMiddle Triassic — about 0 of 31 occurrencesLate Triassic — about 0 of 31 occurrencesEarly Jurassic — about 3 of 31 occurrencesMiddle Jurassic — about 2 of 31 occurrencesLate Jurassic — about 5 of 31 occurrencesEarly Cretaceous — about 2 of 31 occurrences547–533 Mya — about 2 occurrences533–518 Mya — about 6 occurrences518–504 Mya — about 6 occurrences490–475 Mya — about 3 occurrences475–461 Mya — about 0.4 occurrences461–447 Mya — about 0.5 occurrences447–433 Mya — about 0.5 occurrences375–361 Mya — about 0.8 occurrences361–347 Mya — about 0.2 occurrences203–189 Mya — about 2 occurrences189–175 Mya — about 0.6 occurrences175–160 Mya — about 2 occurrences160–146 Mya — about 3 occurrences146–132 Mya — about 4 occurrences132–118 Mya — about 0.3 occurrences516 Mya143.1 Mya547 Mya118 Mya

31 occurrences of Diplocraterion 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

31 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

Laeso — 55.00°N, 15.07°EKap Leslie — 70.48°N, 21.97°WMickwitzia Sandstone — 58.60°N, 13.35°EMickwitzia Sandstone — 58.62°N, 13.43°EHardeberga — 55.00°N, 15.07°EBeach — 47.63°N, 52.92°WFile Haidar — 58.62°N, 13.77°ESaltwick — 54.45°N, 0.57°WVaureal — 49.78°N, 63.57°WCurrier — 49.70°N, 126.62°WHöganäs — 56.04°N, 12.70°ESundance — 44.53°N, 107.83°WOcieseki Sandstone — 50.90°N, 20.90°EPowers Steps — 47.63°N, 52.99°WBlue Lias — 50.71°N, 2.96°WStaithes Sandstone — 54.26°N, 1.28°WHoucheng — 40.92°N, 118.16°EOld Red Sandstone — 51.50°N, 2.78°W

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The named rock units Diplocraterion has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Diplocraterion and its relatives

Cambrian

Where Diplocraterion and its relatives were recorded in the Cambrian.

Found in the same rock

181 taxa

The Paleobiology Database records 20 sites for Diplocraterion, 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

15 references

Each of the 31 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. 3 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 content2

Picture of Diplocraterion

Credit
Jstuby at en.wikipedia
Licence
Public Domain
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows it

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. Torell 1870