Liparoceras

Liparoceras is an extinct fossil ammonite genus from the Early Jurassic period of England, and is found in lower Lias deposits. Its name means 'fat head' and this is due to its broad shell. The venter is wide and finely ribbed with no keel and it has two rows of tubercules on each whorl.

Liparoceras

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
LiparoceratidaePBDB
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 most 16 million years on record.

Every occurrence read is dated to somewhere between 199.5 Mya and 183.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Jurassic — about 167 of 167 occurrencesEarly Jurassic200–199 Mya — about 0.0 occurrences199–199 Mya — about 0.1 occurrences199–198 Mya — about 0.1 occurrences198–198 Mya — about 0.1 occurrences198–197 Mya — about 0.1 occurrences197–197 Mya — about 0.1 occurrences197–196 Mya — about 0.1 occurrences196–195 Mya — about 0.1 occurrences195–195 Mya — about 0.1 occurrences195–194 Mya — about 0.1 occurrences194–194 Mya — about 0.1 occurrences194–193 Mya — about 0.1 occurrences193–193 Mya — about 5 occurrences193–192 Mya — about 11 occurrences192–192 Mya — about 11 occurrences192–191 Mya — about 11 occurrences191–190 Mya — about 11 occurrences190–190 Mya — about 11 occurrences190–189 Mya — about 11 occurrences189–189 Mya — about 11 occurrences189–188 Mya — about 11 occurrences188–188 Mya — about 11 occurrences188–187 Mya — about 11 occurrences187–186 Mya — about 11 occurrences186–186 Mya — about 11 occurrences186–185 Mya — about 11 occurrences185–185 Mya — about 11 occurrences185–184 Mya — about 10 occurrences184–184 Mya — about 0.7 occurrences184–183 Mya — about 0.1 occurrences200 Mya183 Mya

167 occurrences of Liparoceras 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

167 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

14 formations

Charmouth Mudstone — 50.72°N, 2.85°WIsztimér — 47.19°N, 17.90°EIsztimér — 47.28°N, 17.84°EFannin — 53.38°N, 132.27°WFannin — 53.20°N, 132.05°WTűzkövesárok Limestone — 47.28°N, 18.08°EBelemnite Marls — 50.72°N, 2.85°WAlmonacid de la Cuba — 41.29°N, 0.79°WAllgäu — 47.18°N, 9.98°ELower Marly Limestone — 34.06°N, 5.52°WGhost Creek — 53.20°N, 132.05°WOust — 36.35°N, 10.07°EMaftah 1 top to Maftah 2 base — 33.46°N, 4.99°WMiddle Lias — 51.80°N, 1.88°WLower Lias — 51.80°N, 1.88°WSunrise — 39.33°N, 118.07°W

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The named rock units Liparoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 132 occurrences have no formation on record, which is common for older literature.

Liparoceras and its relatives

Early Jurassic

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

Found in the same rock

314 taxa

The Paleobiology Database records 149 sites for Liparoceras, 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

23 references

Each of the 167 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. 11 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 Liparoceras

Credit
Daderot
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Liparoceras 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 itLiparoceratidae through timeFormations of the Early JurassicThe world it lived on

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