Argonauta tokunagai

Argonauta tokunagai is an extinct species of octopus. It was described in 1913 based on fossil material from the Middle Miocene Huzina Formation of Japan.

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

On record

Recorded, not inferred
Sits inside
ArgonautaPBDB
Diet
carnivorePBDB, for Cephalopoda
Life habit
nektobenthicPBDB, for Octopoda
Motility
fast-movingPBDB, for Cephalopoda
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At most 2.2 million years on record.

Every occurrence read is dated to somewhere between 13.82 Mya and 11.63 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Miocene — about 3 of 3 occurrencesMiocene14–14 Mya — about 0.0 occurrences14–14 Mya — about 0.1 occurrences14–14 Mya — about 0.1 occurrences14–13 Mya — about 0.1 occurrences13–13 Mya — about 0.1 occurrences13–13 Mya — about 0.1 occurrences13–13 Mya — about 0.1 occurrences13–13 Mya — about 0.1 occurrences13–13 Mya — about 0.1 occurrences13–13 Mya — about 0.1 occurrences13–13 Mya — about 0.1 occurrences13–13 Mya — about 0.1 occurrences13–13 Mya — about 0.1 occurrences13–12 Mya — about 0.1 occurrences12–12 Mya — about 0.1 occurrences12–12 Mya — about 0.1 occurrences12–12 Mya — about 0.1 occurrences12–12 Mya — about 0.1 occurrences12–12 Mya — about 0.1 occurrences12–12 Mya — about 0.1 occurrences12–12 Mya — about 0.1 occurrences12–12 Mya — about 0.0 occurrences14.32 Mya11.13 Mya

3 occurrences of Argonauta tokunagai on record, most of them in the Miocene. 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

3 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

1 formation

Fujina — 35.44°N, 133.04°EFujina — 35.43°N, 133.07°E

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

Argonauta tokunagai and its relatives

Miocene

Where Argonauta tokunagai and its relatives were recorded in the Miocene.

Found in the same rock

1 taxon

The Paleobiology Database records 3 sites for Argonauta tokunagai, 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

2 references

Each of the 3 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 Argonauta tokunagai 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 Argonauta tokunagai, or no answer at all. This entry cannot say which.

No 3D scan of Argonauta tokunagai 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 itArgonauta through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Yokoyama 1913