Dawsonocerina

Dawsonocerina is an extinct genus of prehistoric nautiloids. The nautiloids are a subclass of shelled cephalopods that were once diverse and numerous but are now represented by only a handful of species.

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

On record

Recorded, not inferred
Sits inside
DawsonoceratidaePBDB
Diet
carnivorePBDB, for Orthocerida
Life habit
nektonicPBDB, for Orthocerida
Motility
actively mobilePBDB, for Orthocerida
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Orthocerida

Time the record covers

At least 9.6 million years on record.

The record covers at least 422.7 Mya to 413.02 Mya. No occurrence read is dated outside 425 Mya to 410.62 Mya.

Silurian — about 2 of 3 occurrencesSilurianDevonian — about 1 of 3 occurrencesDevonian426–425 Mya — about 0.0 occurrences425–424 Mya — about 0.2 occurrences424–424 Mya — about 0.2 occurrences424–423 Mya — about 0.2 occurrences423–423 Mya — about 0.2 occurrences423–422 Mya — about 0.2 occurrences422–422 Mya — about 0.2 occurrences422–421 Mya — about 0.2 occurrences421–421 Mya — about 0.2 occurrences421–420 Mya — about 0.2 occurrences420–420 Mya — about 0.2 occurrences420–419 Mya — about 0.1 occurrences413–413 Mya — about 0.1 occurrences413–412 Mya — about 0.2 occurrences412–412 Mya — about 0.2 occurrences412–411 Mya — about 0.2 occurrences411–411 Mya — about 0.2 occurrences411–410 Mya — about 0.0 occurrences422.7 Mya413.02 Mya425.5 Mya410.1 Mya

3 occurrences of Dawsonocerina 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

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

3 formations

Pozary — 50.08°N, 14.47°EPraha — 49.92°N, 14.07°EKopanina — 49.93°N, 14.05°E

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

Dawsonocerina and its relatives

Silurian

Where Dawsonocerina and its relatives were recorded in the Silurian.

Found in the same rock

44 taxa

The Paleobiology Database records 3 sites for Dawsonocerina, 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

3 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 Dawsonocerina 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 Dawsonocerina, or no answer at all. This entry cannot say which.

No 3D scan of Dawsonocerina 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 itDawsonoceratidae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Horny 1956