Graciloceratidae

The Graciloceratidae is a family of nautiloid cephalopods from the Middle and Upper Ordovician belonging to the Oncocerida, characterized by exogastric cyrtocones that expand slightly or moderately and have thin walled, orthochoanitic marginal or subventral, tubular siphuncles.

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

On record

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

Time the record covers

At least 25 million years on record.

The record covers at least 470.3 Mya to 445.2 Mya. No occurrence read is dated outside 472.1 Mya to 443.1 Mya.

Ordovician — about 18 of 18 occurrencesOrdovicianSilurian — about 0 of 18 occurrences473–472 Mya — about 0.1 occurrences472–471 Mya — about 1 occurrence471–470 Mya — about 1.0 occurrences470–469 Mya — about 0.2 occurrences469–468 Mya — about 0.2 occurrences468–467 Mya — about 0.2 occurrences467–466 Mya — about 0.2 occurrences466–465 Mya — about 0.1 occurrences465–464 Mya — about 0.1 occurrences464–463 Mya — about 0.1 occurrences463–462 Mya — about 0.1 occurrences462–461 Mya — about 0.1 occurrences461–460 Mya — about 0.1 occurrences460–459 Mya — about 0.1 occurrences459–458 Mya — about 0.1 occurrences458–457 Mya — about 0.2 occurrences457–456 Mya — about 0.3 occurrences456–455 Mya — about 0.3 occurrences455–454 Mya — about 0.6 occurrences454–453 Mya — about 1 occurrence453–452 Mya — about 1.0 occurrences452–451 Mya — about 0.3 occurrences451–450 Mya — about 0.3 occurrences450–449 Mya — about 1 occurrence449–448 Mya — about 1 occurrence448–447 Mya — about 1 occurrence447–446 Mya — about 1 occurrence446–445 Mya — about 2 occurrences445–444 Mya — about 3 occurrences444–443 Mya — about 1 occurrence470.3 Mya445.2 Mya472.7 Mya442.5 Mya

18 occurrences of Graciloceratidae on record, most of them in the Ordovician. 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

18 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

9 formations

Ärina — 59.19°N, 26.19°EAntelope Valley — 39.09°N, 116.85°WAntelope Valley — 39.00°N, 116.62°WAntelope Valley — 39.05°N, 116.74°WBønsnes — 66.77°N, 13.47°EBønsnes — 60.06°N, 10.21°EValcour — 44.87°N, 73.41°WKullsberg — 60.92°N, 15.10°EWhitewater — 39.00°N, 84.00°WGillberga — 57.35°N, 17.05°EKilley Bridge — 54.60°N, 6.87°WLyckholm — 59.05°N, 24.03°E

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

Graciloceratidae and its relatives

Ordovician

Where Graciloceratidae and its relatives were recorded in the Ordovician.

Found in the same rock

388 taxa

The Paleobiology Database records 12 sites for Graciloceratidae, 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

10 references

Each of the 18 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 Graciloceratidae 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 Graciloceratidae, or no answer at all. This entry cannot say which.

No 3D scan of Graciloceratidae 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 itOncocerida through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Flower in Flower and Kummel 1950