Isopodichnus

Isopodichnus is an ichnogenus of trace fossil. Ribbon-like in form, Isopodichnus traces were likely formed by the activity of an isopod crustacean foraging within the preserved sediment. Parallel to the bedding plane, a central furrow is flanked by two hypichnial ridges. Trails may also exhibit scratch marks and be associated with Rusophycus-like resting traces. Isopodichnus are very similar in form to Cruziana traces, making delineation of the two forms difficult, and controversial.

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

Flyingsalamanders · CC BY 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 14 million years on record.

The record covers at least 241.464 Mya to 227.3 Mya. No occurrence read is dated outside 247 Mya to 205.7 Mya.

Early Triassic — about 0 of 2 occurrencesMiddle Triassic — about 1 of 2 occurrencesMiddle TriassicLate Triassic — about 1 of 2 occurrencesLate Triassic248–246 Mya — about 0.1 occurrences246–245 Mya — about 0.3 occurrences245–244 Mya — about 0.3 occurrences244–242 Mya — about 0.3 occurrences242–241 Mya — about 0.1 occurrences228–226 Mya — about 0.0 occurrences226–225 Mya — about 0.1 occurrences225–223 Mya — about 0.1 occurrences223–222 Mya — about 0.1 occurrences222–221 Mya — about 0.1 occurrences221–219 Mya — about 0.1 occurrences219–218 Mya — about 0.1 occurrences218–216 Mya — about 0.1 occurrences216–215 Mya — about 0.1 occurrences215–213 Mya — about 0.1 occurrences213–212 Mya — about 0.1 occurrences212–211 Mya — about 0.1 occurrences211–209 Mya — about 0.1 occurrences209–208 Mya — about 0.1 occurrences208–206 Mya — about 0.1 occurrences206–205 Mya — about 0.0 occurrences241.464 Mya227.3 Mya247.8 Mya204.9 Mya

2 occurrences of Isopodichnus on record, most of them in the Middle Triassic. 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

2 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

Sloan Canyon — 36.94°N, 103.15°WGrès à Voltzia — 48.78°N, 7.25°E

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

Isopodichnus and its relatives

Middle Triassic

Where Isopodichnus and its relatives were recorded in the Middle Triassic.

Found in the same rock

37 taxa

The Paleobiology Database records 2 sites for Isopodichnus, 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

2 references

Each of the 2 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Isopodichnus

Credit
Flyingsalamanders
Licence
CC BY 3.0
Commercial use
the licence allows it

No 3D scan of Isopodichnus 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 timeFormations of the Middle TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Bornemann 1889