Harrisoceras

Harrisoceras

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 28 million years on record.

The record covers at least 461.4 Mya to 432.9 Mya. No occurrence read is dated outside 464.3 Mya to 419.62 Mya.

Ordovician — about 2 of 9 occurrencesOrdovicianSilurian — about 7 of 9 occurrencesSilurianDevonian — about 0 of 9 occurrences465–464 Mya — about 0.2 occurrences464–462 Mya — about 0.5 occurrences462–461 Mya — about 0.7 occurrences461–459 Mya — about 0.5 occurrences444–442 Mya — about 0.2 occurrences442–440 Mya — about 0.2 occurrences440–439 Mya — about 0.2 occurrences439–437 Mya — about 0.7 occurrences437–436 Mya — about 0.8 occurrences436–434 Mya — about 0.8 occurrences434–433 Mya — about 0.8 occurrences433–431 Mya — about 1 occurrence431–430 Mya — about 0.6 occurrences430–428 Mya — about 0.4 occurrences428–426 Mya — about 0.3 occurrences426–425 Mya — about 0.3 occurrences425–423 Mya — about 0.3 occurrences423–422 Mya — about 0.2 occurrences422–420 Mya — about 0.1 occurrences420–419 Mya — about 0.0 occurrences461.4 Mya432.9 Mya465.2 Mya418.7 Mya

9 occurrences of Harrisoceras 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

9 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

Racine — 42.73°N, 87.78°WFluminimaggiore — 39.43°N, 8.50°EDongka — 32.50°N, 91.00°ELojoping — 30.77°N, 111.33°ELower Shiqipo — 28.15°N, 85.97°EKandle — 59.42°N, 24.75°EVäo — 59.42°N, 24.75°ELeijiatung — 30.00°N, 108.00°E

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The named rock units Harrisoceras 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.

Harrisoceras and its relatives

Silurian

Where Harrisoceras and its relatives were recorded in the Silurian.

Found in the same rock

283 taxa

The Paleobiology Database records 9 sites for Harrisoceras, 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

6 references

Each of the 9 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 content1

Picture of Harrisoceras

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

No 3D scan of Harrisoceras 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.

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. Flower 1939