Protokionoceras

Protokionoceras

via iDigBio · CC0 · via iDigBio. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.

On record

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

Time the record covers

At least 66 million years on record.

The record covers at least 454 Mya to 387.95 Mya. No occurrence read is dated outside 458.2 Mya to 382.31 Mya.

Ordovician — about 9 of 21 occurrencesOrdovicianSilurian — about 10 of 21 occurrencesSilurianDevonian — about 2 of 21 occurrencesDevonian460–457 Mya — about 1 occurrence457–454 Mya — about 4 occurrences454–452 Mya — about 1 occurrence452–449 Mya — about 1 occurrence449–447 Mya — about 0.6 occurrences447–444 Mya — about 0.3 occurrences444–441 Mya — about 0.5 occurrences441–439 Mya — about 2 occurrences439–436 Mya — about 1 occurrence436–433 Mya — about 1 occurrence433–431 Mya — about 3 occurrences431–428 Mya — about 1 occurrence428–426 Mya — about 0.8 occurrences426–423 Mya — about 0.7 occurrences423–420 Mya — about 0.0 occurrences389–386 Mya — about 0.7 occurrences386–383 Mya — about 0.9 occurrences383–381 Mya — about 0.4 occurrences454 Mya387.95 Mya460 Mya381 Mya

21 occurrences of Protokionoceras on record, most of them in the Silurian. 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

21 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

12 formations

Racine — 43.05°N, 88.01°WRacine — 42.73°N, 87.78°WRacine — 42.88°N, 88.04°WNakholmen — 60.00°N, 11.00°ESilica — 41.72°N, 83.72°WOak Orchard — 43.21°N, 75.46°WNorderhov — 59.95°N, 10.66°EArnestad — 60.00°N, 11.00°EFrognerkilen — 60.00°N, 11.00°ESolvang — 60.00°N, 11.00°EChicotte — 49.40°N, 63.60°WWhitby — 44.53°N, 80.38°WSkogerholmen — 59.87°N, 10.59°ELongdanyan — 29.88°N, 102.35°E

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The named rock units Protokionoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Protokionoceras and its relatives

Silurian

Where Protokionoceras and its relatives were recorded in the Silurian.

Found in the same rock

474 taxa

The Paleobiology Database records 21 sites for Protokionoceras, 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

14 references

Each of the 21 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. 2 further references are not listed. 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

Picture of Protokionoceras

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

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 itGeisonoceratidae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Grabau and Shimer 1910