Bactroceras

Bactroceras is a genus of orthoceratoid cephalopods that lived during the early Middle Ordovician, from about 472—464 mya, existing for approximately 8 million years.

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

On record

Recorded, not inferred
Sits inside
BaltoceratidaePBDB
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 24 million years on record.

The record covers at least 477.1 Mya to 452.3 Mya. No occurrence read is dated outside 486.85 Mya to 443.1 Mya.

Cambrian — about 0 of 36 occurrencesOrdovician — about 36 of 36 occurrencesOrdovicianSilurian — about 0 of 36 occurrences488–486 Mya — about 0.3 occurrences486–485 Mya — about 0.7 occurrences485–483 Mya — about 0.7 occurrences483–482 Mya — about 0.7 occurrences482–480 Mya — about 0.7 occurrences480–479 Mya — about 0.8 occurrences479–477 Mya — about 0.9 occurrences477–476 Mya — about 2 occurrences476–474 Mya — about 2 occurrences474–473 Mya — about 2 occurrences473–471 Mya — about 3 occurrences471–470 Mya — about 3 occurrences470–468 Mya — about 2 occurrences468–466 Mya — about 1 occurrence466–465 Mya — about 1 occurrence465–463 Mya — about 1 occurrence463–462 Mya — about 0.9 occurrences462–460 Mya — about 3 occurrences460–459 Mya — about 3 occurrences459–457 Mya — about 0.9 occurrences457–456 Mya — about 0.9 occurrences456–454 Mya — about 1.0 occurrences454–453 Mya — about 0.4 occurrences453–451 Mya — about 1 occurrence451–450 Mya — about 1 occurrence450–448 Mya — about 0.8 occurrences448–447 Mya — about 0.2 occurrences447–445 Mya — about 0.2 occurrences445–444 Mya — about 0.2 occurrences444–442 Mya — about 0.1 occurrences477.1 Mya452.3 Mya487.7 Mya442.2 Mya

36 occurrences of Bactroceras 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

36 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

22 formations

Couches de la Maurerie — 43.45°N, 2.99°ECouches de la Maurerie — 43.58°N, 3.36°ECouches de la Maurerie — 43.46°N, 3.00°EAntelope Valley — 39.09°N, 116.85°WAntelope Valley — 39.00°N, 116.62°WAntelope Valley — 39.05°N, 116.74°WSarka — 50.00°N, 14.00°EMalongulli — 34.00°S, 148.00°EMalongulli — 33.00°S, 148.00°EMiaopo — 33.00°N, 111.00°EBaota — 32.00°N, 118.00°EBaota — 33.00°N, 106.00°EGoonumbla Volcanics — 33.04°S, 147.93°ESeby Limestone — 57.00°N, 17.00°EZhitai — 29.00°N, 109.00°EDawan — 29.00°N, 110.00°ETaohuashi — 29.00°N, 111.00°EPanjiazui — 29.00°N, 111.00°EGuniutan — 30.00°N, 117.00°EKariem — 5.16°S, 140.91°EFolkeslunda Limestone — 56.73°N, 16.72°EValhallfonna — 79.79°N, 17.87°EPontyfenni — 51.82°N, 4.56°WLlyn y Gafr — 52.72°N, 3.95°WSchistes de Saint-Chinian — 43.33°N, 2.60°ECouches du Foulon — 43.58°N, 3.36°EElnes — 59.91°N, 10.67°EUpper Fezouata — 30.55°N, 5.68°W

Loading coastlines…

The named rock units Bactroceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Bactroceras and its relatives

Ordovician

Where Bactroceras and its relatives were recorded in the Ordovician.

Found in the same rock

449 taxa

The Paleobiology Database records 35 sites for Bactroceras, 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

19 references

Each of the 36 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. 7 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 content0

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

No 3D scan of Bactroceras 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 itBaltoceratidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Holm 1898