Hadragnostus

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

On record

Recorded, not inferred
Sits inside
AmmagnostidaePBDB
Diet
detritivorePBDB, for Agnostida
Life habit
epifaunalPBDB, for Agnostida
Motility
slow-movingPBDB, for Agnostida

Time the record covers

At least 3.5 million years on record.

The record covers at least 500.5 Mya to 497 Mya. No occurrence read is dated outside 503 Mya to 486.85 Mya.

Cambrian — about 41 of 41 occurrencesCambrianOrdovician — about 0 of 41 occurrences504–503 Mya — about 0.1 occurrences503–502 Mya — about 0.5 occurrences502–502 Mya — about 0.5 occurrences502–501 Mya — about 0.5 occurrences501–501 Mya — about 0.5 occurrences501–500 Mya — about 3 occurrences500–499 Mya — about 4 occurrences499–499 Mya — about 4 occurrences499–498 Mya — about 5 occurrences498–498 Mya — about 5 occurrences498–497 Mya — about 5 occurrences497–497 Mya — about 2 occurrences497–496 Mya — about 0.7 occurrences496–495 Mya — about 0.7 occurrences495–495 Mya — about 0.7 occurrences495–494 Mya — about 0.7 occurrences494–494 Mya — about 0.7 occurrences494–493 Mya — about 0.7 occurrences493–493 Mya — about 0.7 occurrences493–492 Mya — about 0.7 occurrences492–491 Mya — about 0.7 occurrences491–491 Mya — about 0.7 occurrences491–490 Mya — about 0.7 occurrences490–490 Mya — about 0.7 occurrences490–489 Mya — about 0.7 occurrences489–489 Mya — about 0.7 occurrences489–488 Mya — about 0.7 occurrences488–487 Mya — about 0.7 occurrences487–487 Mya — about 0.7 occurrences487–486 Mya — about 0.1 occurrences500.5 Mya497 Mya503.5 Mya486.4 Mya

41 occurrences of Hadragnostus 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

41 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

8 formations

Huaqiao — 28.39°N, 109.53°EHuaqiao — 28.72°N, 109.97°EHuaqiao — 29.10°N, 110.92°EDeadwood — 44.25°N, 103.78°WDeadwood — 44.28°N, 103.73°WDeadwood — 44.25°N, 103.57°WDeadwood — 44.07°N, 103.22°WDeadwood — 44.45°N, 104.42°WZhumabai — 43.53°N, 69.95°ERabbitkettle — 62.70°N, 128.38°WMila — 36.11°N, 50.63°ELongha — 23.26°N, 105.54°EKushan — 36.30°N, 118.41°ESpurs — 71.34°S, 163.21°E

Loading coastlines…

The named rock units Hadragnostus 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.

Hadragnostus and its relatives

Cambrian

Where Hadragnostus and its relatives were recorded in the Cambrian.

Found in the same rock

128 taxa

The Paleobiology Database records 19 sites for Hadragnostus, 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

10 references

Each of the 41 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 Hadragnostus 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 Hadragnostus, or no answer at all. This entry cannot say which.

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

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itAmmagnostidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Opik 1967