Lewesiceras

Lewesiceras is a genus of large ammonites belonging to the order Ammonitida and the family Pachydiscidae.

Lewesiceras

Hectonichus · CC BY-SA 3.0 · 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
PachydiscidaePBDB
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 4.1 million years on record.

The record covers at least 93.9 Mya to 89.8 Mya. No occurrence read is dated outside 100.5 Mya to 66 Mya.

Early Cretaceous — about 0 of 38 occurrencesLate Cretaceous — about 38 of 38 occurrencesLate CretaceousPaleocene — about 0 of 38 occurrences101–100 Mya — about 0.2 occurrences100–99 Mya — about 0.4 occurrences99–98 Mya — about 0.4 occurrences98–96 Mya — about 0.4 occurrences96–95 Mya — about 0.4 occurrences95–94 Mya — about 0.4 occurrences94–93 Mya — about 9 occurrences93–92 Mya — about 10 occurrences92–90 Mya — about 10 occurrences90–89 Mya — about 5 occurrences89–88 Mya — about 0.3 occurrences88–87 Mya — about 0.3 occurrences87–86 Mya — about 0.3 occurrences86–84 Mya — about 0.0 occurrences84–83 Mya — about 0.0 occurrences83–82 Mya — about 0.0 occurrences82–81 Mya — about 0.0 occurrences81–80 Mya — about 0.0 occurrences80–78 Mya — about 0.0 occurrences78–77 Mya — about 0.0 occurrences77–76 Mya — about 0.0 occurrences76–75 Mya — about 0.0 occurrences75–74 Mya — about 0.0 occurrences74–72 Mya — about 0.0 occurrences72–71 Mya — about 0.0 occurrences71–70 Mya — about 0.0 occurrences70–69 Mya — about 0.0 occurrences69–68 Mya — about 0.0 occurrences68–67 Mya — about 0.0 occurrences67–65 Mya — about 0.0 occurrences93.9 Mya – 89.8 Mya101.2 Mya65.3 Mya

38 occurrences of Lewesiceras on record, most of them in the Late Cretaceous. 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

38 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

13 formations

Lewes Nodular Chalk — 51.87°N, 0.52°WLewes Nodular Chalk — 51.42°N, 1.93°WLewes Nodular Chalk — 51.69°N, 0.94°WLewes Nodular Chalk — 51.88°N, 0.03°ELewes Nodular Chalk — 51.90°N, 0.26°WBrießnitz — 51.00°N, 13.77°EBrießnitz — 51.05°N, 13.69°ESenneville — 49.78°N, 0.42°ETeplice — 50.45°N, 14.05°ETeplice — 50.40°N, 13.94°ELa Frontera — 5.30°N, 73.82°WBuda Limestone — 29.82°N, 98.30°WDölzschen — 51.05°N, 13.64°EStrehlen — 51.03°N, 13.77°EUpper Chalk — 51.25°N, 0.57°WWadi Daya — 34.03°N, 5.38°WAnaipadi — 11.10°N, 78.96°EMassillan — 44.24°N, 4.75°EBila Hora — 50.22°N, 13.74°E

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The named rock units Lewesiceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 occurrences have no formation on record, which is common for older literature.

Lewesiceras and its relatives

Late Cretaceous

Where Lewesiceras and its relatives were recorded in the Late Cretaceous.

Found in the same rock

161 taxa

The Paleobiology Database records 36 sites for Lewesiceras, 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

16 references

Each of the 38 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. 4 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 Lewesiceras

Credit
Hectonichus
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itPachydiscidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Spath 1939