Archaeotriakis

Archaeotriakis is an extinct genus of false catshark from the Cretaceous period. Currently, this genus is restricted to the Campanian stage of the Western Interior Seaway of North America. It is known from two species, mainly from isolated teeth. A. rochelleae was described from the Judith River Formation of Montana, USA. A. ornatus was originally described from the Teapot Member of the Mesaverde Group of Wyoming, USA. The range of A. ornatus has since been found in the Bearpaw formation of Alberta, Canada.

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

On record

Recorded, not inferred
Sits inside
TriakidaePBDB
Diet
carnivorePBDB, for Carcharhiniformes
Life habit
nektonicPBDB, for Carcharhiniformes
Motility
actively mobilePBDB, for Carcharhiniformes

Time the record covers

At most 18 million years on record.

Every occurrence read is dated to somewhere between 83.6 Mya and 66 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 13 of 13 occurrencesLate CretaceousPaleocene — about 0 of 13 occurrences84–83 Mya — about 0.1 occurrences83–83 Mya — about 0.5 occurrences83–82 Mya — about 0.5 occurrences82–82 Mya — about 0.5 occurrences82–81 Mya — about 0.5 occurrences81–80 Mya — about 0.5 occurrences80–80 Mya — about 0.5 occurrences80–79 Mya — about 0.5 occurrences79–79 Mya — about 0.5 occurrences79–78 Mya — about 0.5 occurrences78–77 Mya — about 0.5 occurrences77–77 Mya — about 0.5 occurrences77–76 Mya — about 0.5 occurrences76–75 Mya — about 0.5 occurrences75–75 Mya — about 0.5 occurrences75–74 Mya — about 0.5 occurrences74–74 Mya — about 0.5 occurrences74–73 Mya — about 0.5 occurrences73–72 Mya — about 0.5 occurrences72–72 Mya — about 0.3 occurrences72–71 Mya — about 0.3 occurrences71–70 Mya — about 0.3 occurrences70–70 Mya — about 0.3 occurrences70–69 Mya — about 0.3 occurrences69–69 Mya — about 0.3 occurrences69–68 Mya — about 0.3 occurrences68–67 Mya — about 0.3 occurrences67–67 Mya — about 0.3 occurrences67–66 Mya — about 0.3 occurrences66–66 Mya — about 0.1 occurrences84.1 Mya65.5 Mya

13 occurrences of Archaeotriakis on record, most of them in the Late Cretaceous. 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

13 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

5 formations

Mesaverde — 44.08°N, 107.73°WMesaverde — 44.11°N, 107.76°WFox Hills — 46.05°N, 103.88°WFox Hills — 46.47°N, 99.58°WJudith River — 48.03°N, 109.01°WJudith River — 48.01°N, 108.91°WBearpaw — 51.27°N, 112.33°WDinosaur Park — 50.83°N, 111.32°W

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

Archaeotriakis and its relatives

Late Cretaceous

Where Archaeotriakis and its relatives were recorded in the Late Cretaceous.

Found in the same rock

79 taxa

The Paleobiology Database records 11 sites for Archaeotriakis, 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

5 references

Each of the 13 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 Archaeotriakis was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

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

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itTriakidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Case 1978