Dawsonoceratidae

Dawsonoceratidae is an extinct family of orthoconic nautiloid cephalopods that lived in what would be North America and Europe from the Late Ordovician through the Middle Devonian from about 480–390 mya, existing for approximately 90 million years.

Dawsonoceratidae

Daderot · CC0 · via Wikipedia/Commons. 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
OrthoceratinaPBDB
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 67 million years on record.

The record covers at least 461.1 Mya to 393.47 Mya. No occurrence read is dated outside 477.1 Mya to 383.4 Mya.

Ordovician — about 73 of 185 occurrencesOrdovicianSilurian — about 105 of 185 occurrencesSilurianDevonian — about 7 of 185 occurrencesDevonian479–476 Mya — about 0.1 occurrences476–472 Mya — about 0.2 occurrences472–469 Mya — about 0.2 occurrences469–466 Mya — about 0.2 occurrences466–463 Mya — about 0.2 occurrences463–459 Mya — about 0.1 occurrences459–456 Mya — about 5 occurrences456–453 Mya — about 15 occurrences453–450 Mya — about 31 occurrences450–446 Mya — about 13 occurrences446–443 Mya — about 8 occurrences443–440 Mya — about 4 occurrences440–437 Mya — about 9 occurrences437–433 Mya — about 11 occurrences433–430 Mya — about 38 occurrences430–427 Mya — about 18 occurrences427–424 Mya — about 13 occurrences424–421 Mya — about 10 occurrences421–417 Mya — about 2 occurrences414–411 Mya — about 4 occurrences411–408 Mya — about 0.3 occurrences408–404 Mya — about 0.1 occurrences404–401 Mya — about 0.1 occurrences401–398 Mya — about 0.1 occurrences398–395 Mya — about 0.1 occurrences395–391 Mya — about 0.9 occurrences391–388 Mya — about 1 occurrence388–385 Mya — about 0.1 occurrences385–382 Mya — about 0.0 occurrences461.1 Mya393.47 Mya479 Mya382 Mya

185 occurrences of Dawsonoceratidae 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

185 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

76 formations

Racine — 43.04°N, 87.91°WRacine — 43.05°N, 88.01°WRacine — 42.73°N, 87.78°WRacine — 42.88°N, 88.04°WRacine — 41.85°N, 87.65°WIrondequoit — 43.18°N, 78.72°WIrondequoit — 43.20°N, 77.62°WIrondequoit — 43.23°N, 77.21°WIrondequoit — 43.23°N, 76.98°WIrondequoit — 43.21°N, 76.88°WIrondequoit — 43.24°N, 76.80°WIrondequoit — 43.26°N, 76.70°WRochester — 43.16°N, 79.05°WRochester — 43.18°N, 78.72°WRochester — 43.19°N, 77.56°WRochester — 43.23°N, 77.21°WRochester — 43.22°N, 77.02°WRochester — 43.21°N, 76.88°WRochester Shale — 43.15°N, 77.62°WRochester Shale — 43.15°N, 77.06°WRochester Shale — 43.10°N, 79.06°WRochester Shale — 43.20°N, 77.53°WRochester Shale — 43.15°N, 77.72°WBoda Limestone — 61.17°N, 14.71°EBoda Limestone — 61.05°N, 15.20°EMaquoketa — 45.00°N, 93.00°WKõrgessaare — 58.98°N, 22.81°EKõrgessaare — 58.95°N, 22.43°EKõrgessaare — 59.02°N, 23.14°EKõrgessaare — 58.98°N, 22.46°EKõrgessaare — 59.22°N, 24.97°EKõrgessaare — 59.02°N, 23.57°EDunleith — 43.00°N, 91.00°WKopanina — 50.00°N, 14.35°EKopanina — 49.95°N, 14.22°EKopanina — 49.93°N, 14.05°EScales Shale — 43.00°N, 91.00°WFluminimaggiore — 39.43°N, 8.50°EFluminimaggiore — 39.32°N, 8.53°EFluminimaggiore — 39.50°N, 8.50°EWillowvale — 43.04°N, 75.36°WWillowvale — 43.03°N, 75.28°WJupiter — 49.17°N, 61.71°WJupiter — 49.25°N, 63.04°WJupiter — 49.28°N, 63.22°WJupiter — 49.50°N, 63.00°WPagegiai — 55.57°N, 21.45°EPozary — 50.03°N, 14.32°EPozary — 50.08°N, 14.47°EPlatteville — 45.00°N, 93.00°WDecorah Shale — 45.00°N, 93.00°WGuttenberg — 43.00°N, 91.00°WIon — 43.00°N, 91.00°WHerkimer — 43.06°N, 75.40°WHerkimer — 43.04°N, 75.36°WHerkimer — 43.03°N, 75.28°WHalla — 57.30°N, 18.13°EHalla — 57.31°N, 18.16°EAmherstburg — 43.98°N, 81.28°WRockway — 43.15°N, 77.06°WRockway — 43.00°N, 79.00°WGlenwood — 45.00°N, 93.00°W

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The named rock units Dawsonoceratidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 52 further formations hold fewer occurrences each and are not listed. 12 occurrences have no formation on record, which is common for older literature.

Dawsonoceratidae and its relatives

Silurian

Where Dawsonoceratidae and its relatives were recorded in the Silurian.

Found in the same rock

1,836 taxa

The Paleobiology Database records 151 sites for Dawsonoceratidae, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

51 references

Each of the 185 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. 39 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 Dawsonoceratidae

Credit
Daderot
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Dawsonoceratidae 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 itOrthoceratina through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Flower 1962