Vermiceras

Searched as Discoceras. The Paleobiology Database treats Vermiceras as the accepted name.

Discoceras is an extinct marine cephalopod mollusk, a member of the Trocholitidae in the Tarphycerida. It is distinct from Discosorus, It is characterized by closely coiled, gradually expanding shells with a subquadrate cross section, that may be ribbed or smooth. The sides are broadly rounded; the venter is wide and slightly rounded. The maximum width is slightly dorsal of the middle. The dorsum has a slight to moderate impression. The siphuncle starts off central for the first half whorl then becomes marginodorsal in the succeeding two whorls, then subdorsal at maturity. As with Trocholites, the dorsal siphuncle in Discoceras probably indicates an orientation during life that places the back of the living chamber high in the shell.

Vermiceras

Kittil hagen · Public Domain · 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
ArietitinaePBDB
Diet
carnivorePBDB, for Ammonoidea
Life habit
nektonicPBDB, for Ammonoidea
Motility
fast-movingPBDB, for Ammonoidea
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At least 376 million years on record.

The record covers at least 477.1 Mya to 100.5 Mya. No occurrence read is dated outside 486.85 Mya to 93.9 Mya.

Cambrian — about 0 of 337 occurrencesOrdovician — about 88 of 337 occurrencesOrdovicianSilurian — about 0 of 337 occurrencesDevonian — about 0 of 337 occurrencesCarboniferous — about 0 of 337 occurrencesPermian — about 0 of 337 occurrencesEarly Triassic — about 0 of 337 occurrencesMiddle Triassic — about 0 of 337 occurrencesLate Triassic — about 0 of 337 occurrencesLate TriassicEarly Jurassic — about 186 of 337 occurrencesMiddle Jurassic — about 0 of 337 occurrencesLate Jurassic — about 0 of 337 occurrencesEarly Cretaceous — about 0 of 337 occurrencesLate Cretaceous — about 62 of 337 occurrences495–481 Mya — about 0.6 occurrences481–467 Mya — about 5 occurrences467–454 Mya — about 27 occurrences454–440 Mya — about 55 occurrences209–195 Mya — about 161 occurrences195–181 Mya — about 25 occurrences181–168 Mya — about 1 occurrence168–154 Mya — about 0.2 occurrences113–100 Mya — about 8 occurrences100–86 Mya — about 54 occurrences477.1 Mya100.5 Mya495 Mya86 Mya

337 occurrences of Vermiceras on record, most of them in the Early Jurassic. 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

337 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

90 formations

Last Creek — 51.09°N, 122.96°WLast Creek — 51.05°N, 122.97°WGraylock — 44.11°N, 119.43°WSandilands — 53.93°N, 133.15°WSunrise — 38.81°N, 117.60°WSunrise — 38.49°N, 118.09°WVasalemma — 59.24°N, 24.29°EVasalemma — 59.23°N, 24.23°EBaota — 28.00°N, 107.00°EBaota — 27.00°N, 107.00°EBaota — 32.00°N, 108.00°EBaota — 29.00°N, 109.00°EBaota — 30.00°N, 111.00°EBaota — 33.00°N, 106.00°EBaota — 33.00°N, 108.00°EOdukpani — 5.19°N, 8.27°EOdukpani — 4.57°N, 6.98°EOdukpani — 5.13°N, 8.34°EHerøya — 59.11°N, 9.65°EAntimonio — 30.63°N, 112.57°WFrognerkilen — 60.00°N, 11.00°EFrognerkilen — 61.33°N, 8.80°EFrognerkilen — 59.88°N, 10.61°EFrognerkilen — 59.92°N, 10.72°EFrognerkilen — 59.82°N, 10.46°EHusbergøya — 59.96°N, 10.48°EHusbergøya — 59.50°N, 10.33°EHusbergøya — 59.87°N, 10.21°EHusbergøya — 59.87°N, 10.72°EHusbergøya — 59.85°N, 10.50°EBønsnes — 66.77°N, 13.47°EBønsnes — 60.06°N, 10.21°EBønsnes — 59.98°N, 11.32°EBønsnes — 60.14°N, 10.30°ESchnöll — 47.70°N, 13.17°EMzinene — 26.92°S, 32.26°EMzinene — 27.87°S, 32.34°ELower Lias — 51.80°N, 1.88°WElnes — 60.00°N, 11.00°EElnes — 60.71°N, 10.89°EElnes — 59.91°N, 10.81°ETalkeetna — 57.73°N, 155.40°WBuda Limestone — 30.71°N, 104.77°WBuda Limestone — 31.04°N, 104.05°WBoda Limestone — 61.17°N, 14.71°EBoda Limestone — 61.05°N, 15.20°EHuayacocotla — 20.33°N, 98.22°WCraie de Rouen — 48.60°N, 0.63°ESaint Jouin — 49.65°N, 0.17°ESaint Jouin — 49.55°N, 0.12°ESandaogou — 37.00°N, 107.00°ESandaogou — 36.00°N, 107.00°EXiayan — 37.00°N, 95.00°EXiayan — 40.00°N, 95.00°E

Loading coastlines…

The named rock units Vermiceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 66 further formations hold fewer occurrences each and are not listed. 82 occurrences have no formation on record, which is common for older literature.

Vermiceras and its relatives

Early Jurassic

Where Vermiceras and its relatives were recorded in the Early Jurassic.

Found in the same rock

305 taxa

The Paleobiology Database records 92 sites for Vermiceras, 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

98 references

Each of the 337 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. 86 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 content2

Picture of Vermiceras

Credit
Kittil hagen
Licence
Public Domain
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial-ShareAlike
Commercial use
the licence does not allow it

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 itArietitinae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hyatt 1867