Acadagnostus

Searched as Acadagnostus ferox. The Paleobiology Database treats Acadagnostus as the accepted name.

Acadagnostus is a genus of trilobite from the Middle Cambrian, with 7 species currently recognized. The type species A. acadicus has the widest distribution known from any peronopsid and has been found in North America, Greenland, England, Western Europe, Eastern Europe, Central Asia, the Altai Mountains, the Siberian shield, China, and Australia.

No picture of Acadagnostus 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 Acadagnostus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
DiplagnostidaePBDB
Diet
detritivorePBDB, for Agnostida
Life habit
epifaunalPBDB, for Agnostida
Motility
slow-movingPBDB, for Agnostida
Vision
blindPBDB, for Diplagnostidae

Time the record covers

At most 7.5 million years on record.

Every occurrence read is dated to somewhere between 504.5 Mya and 497 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Cambrian — about 5 of 5 occurrencesCambrian505–504 Mya — about 0.1 occurrences504–504 Mya — about 0.3 occurrences504–504 Mya — about 0.3 occurrences504–504 Mya — about 0.3 occurrences504–503 Mya — about 0.3 occurrences503–503 Mya — about 0.3 occurrences503–503 Mya — about 0.3 occurrences503–502 Mya — about 0.3 occurrences502–502 Mya — about 0.3 occurrences502–502 Mya — about 0.3 occurrences502–502 Mya — about 0.3 occurrences502–501 Mya — about 0.3 occurrences501–501 Mya — about 0.3 occurrences501–501 Mya — about 0.3 occurrences501–500 Mya — about 0.3 occurrences500–500 Mya — about 0.1 occurrences500–500 Mya — about 0.1 occurrences500–500 Mya — about 0.1 occurrences500–499 Mya — about 0.1 occurrences499–499 Mya — about 0.1 occurrences499–499 Mya — about 0.1 occurrences499–498 Mya — about 0.1 occurrences498–498 Mya — about 0.1 occurrences498–498 Mya — about 0.1 occurrences498–498 Mya — about 0.1 occurrences498–497 Mya — about 0.1 occurrences497–497 Mya — about 0.1 occurrences497–497 Mya — about 0.0 occurrences505 Mya496.5 Mya

5 occurrences of Acadagnostus 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

5 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

Fjällbränna — 64.43°N, 15.54°EAlum Shale — 58.76°N, 15.52°E

Loading coastlines…

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

Acadagnostus and its relatives

Cambrian

Where Acadagnostus and its relatives were recorded in the Cambrian.

Found in the same rock

281 taxa

The Paleobiology Database records 19 sites for Acadagnostus, 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 5 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content0

No picture of Acadagnostus 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 Acadagnostus, or no answer at all. This entry cannot say which.

No 3D scan of Acadagnostus was found in MorphoSource and Sketchfab.

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 itDiplagnostidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Kobayashi 1939