Atreipus

Atreipus is an ichnogenus or trace fossil attributed to early Ornithischian dinosaurs. Its significance for Triassic biostratigraphy has earned it some fame. Reptile footprint faunules from the early Mesozoic Newark Supergroup of eastern North America.

No picture of Atreipus was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Atreipus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
GrallatoridaePBDB
Diet
carnivorePBDB, for Theropoda
Life habit
ground dwelling, solitaryPBDB, for Theropoda
Motility
actively mobilePBDB, for Theropoda
Environment
terrestrialPBDB, for Theropoda

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 201.4 Mya.

Early Triassic — about 0 of 8 occurrencesMiddle Triassic — about 1 of 8 occurrencesMiddle TriassicLate Triassic — about 7 of 8 occurrencesLate TriassicEarly Jurassic — about 0 of 8 occurrences248–246 Mya — about 0.1 occurrences246–245 Mya — about 0.3 occurrences245–243 Mya — about 0.3 occurrences243–242 Mya — about 0.3 occurrences242–240 Mya — about 0.0 occurrences238–237 Mya — about 0.0 occurrences237–235 Mya — about 0.4 occurrences235–234 Mya — about 0.4 occurrences234–232 Mya — about 0.6 occurrences232–231 Mya — about 0.6 occurrences231–229 Mya — about 0.6 occurrences229–227 Mya — about 0.6 occurrences227–226 Mya — about 0.3 occurrences226–224 Mya — about 0.3 occurrences224–223 Mya — about 0.3 occurrences223–221 Mya — about 0.3 occurrences221–219 Mya — about 0.3 occurrences219–218 Mya — about 0.3 occurrences218–216 Mya — about 0.3 occurrences216–215 Mya — about 0.3 occurrences215–213 Mya — about 0.3 occurrences213–212 Mya — about 0.3 occurrences212–210 Mya — about 0.3 occurrences210–208 Mya — about 0.3 occurrences208–207 Mya — about 0.3 occurrences207–205 Mya — about 0.2 occurrences205–204 Mya — about 0.0 occurrences204–202 Mya — about 0.0 occurrences202–200 Mya — about 0.0 occurrences241.464 Mya227.3 Mya247.9 Mya200.5 Mya

8 occurrences of Atreipus on record, most of them in the Late 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

8 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

4 formations

Timezgadiouine — 31.07°N, 8.96°WTimezgadiouine — 30.82°N, 9.09°WPassaic — 40.75°N, 74.19°WPassaic — 40.23°N, 75.45°WStockton — 41.14°N, 73.91°WTravenanzes — 46.23°N, 11.12°E

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The named rock units Atreipus 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.

Atreipus and its relatives

Late Triassic

Where Atreipus and its relatives were recorded in the Late Triassic.

Found in the same rock

23 taxa

The Paleobiology Database records 8 sites for Atreipus, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

7 references

Each of the 8 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 content1

Photogrammetry

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Atreipus sp. · uwgm:uw:7435

No picture of Atreipus was found. Wikipedia, Wikidata and iDigBio were searched and had none.

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

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Atreipus, or no answer at all. This entry cannot say which.

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 itGrallatoridae through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Olsen and Baird 1986