Lioplacodes

Lioplacodes is an extinct genus of freshwater snail of the family Viviparidae. It lived from the Jurassic to Paleocene of Canada, the United States, and China.

Lioplacodes

Yale Peabody Museum · CC0 · via GBIF. 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
ViviparidaePBDB
Diet
omnivorePBDB, for Viviparidae
Life habit
epifaunalPBDB, for Viviparidae
Motility
actively mobilePBDB, for Viviparidae
Vision
limitedPBDB, for Gastropoda
Environment
freshwaterPBDB, for Viviparidae

Time the record covers

At least 104 million years on record.

The record covers at least 165.3 Mya to 60.9 Mya. No occurrence read is dated outside 170.9 Mya to 56 Mya.

Middle Jurassic — about 3 of 38 occurrencesMiddle JurassicLate Jurassic — about 0 of 38 occurrencesEarly Cretaceous — about 1 of 38 occurrencesEarly CretaceousLate Cretaceous — about 13 of 38 occurrencesLate CretaceousPaleocene — about 21 of 38 occurrencesPaleoceneEocene — about 0 of 38 occurrences173–169 Mya — about 0.9 occurrences169–165 Mya — about 2 occurrences121–117 Mya — about 0.3 occurrences117–113 Mya — about 0.6 occurrences113–109 Mya — about 0.0 occurrences86–82 Mya — about 0.5 occurrences82–78 Mya — about 1 occurrence78–74 Mya — about 1 occurrence74–70 Mya — about 5 occurrences70–66 Mya — about 7 occurrences66–62 Mya — about 10 occurrences62–58 Mya — about 7 occurrences58–54 Mya — about 3 occurrences165.3 Mya60.9 Mya173 Mya54 Mya

38 occurrences of Lioplacodes on record, most of them in the Paleocene. 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

12 formations

Ravenscrag — 49.60°N, 108.70°WRavenscrag — 49.57°N, 108.81°WRavenscrag — 49.70°N, 109.00°WRavenscrag — 49.30°N, 105.42°WRavenscrag — 49.40°N, 105.63°WRavenscrag — 49.13°N, 104.88°WRavenscrag — 49.70°N, 110.50°WRavenscrag — 49.10°N, 102.88°WRavenscrag — 49.51°N, 109.02°WHell Creek — 45.53°N, 101.63°WHell Creek — 46.90°N, 101.50°WHell Creek — 47.57°N, 106.95°WLance — 43.12°N, 104.64°WLance — 43.15°N, 104.57°WLance — 43.17°N, 104.53°WTwo Medicine — 48.63°N, 113.75°WHepingxiang — 25.32°N, 100.24°EHepingxiang — 25.65°N, 99.95°EScollard — 52.33°N, 113.12°WNorth Horn — 39.27°N, 111.25°WPaskapoo — 54.80°N, 115.46°WJudith River — 47.81°N, 109.59°WFrenchman — 49.52°N, 108.82°WUpper Lufeng — 25.17°N, 102.08°EDraney Limestone — 43.05°N, 111.16°W

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

Lioplacodes and its relatives

Paleocene

Where Lioplacodes and its relatives were recorded in the Paleocene.

Found in the same rock

355 taxa

The Paleobiology Database records 31 sites for Lioplacodes, 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

14 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. 2 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 Lioplacodes

Source
GBIF
Credit
Yale Peabody Museum
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Lioplacodes 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 itViviparidae through timeFormations of the PaleoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Meek and Hayden 1864