Maackia

Maackia is a genus of freshwater snails with an operculum, an aquatic gastropod mollusk in the family Amnicolidae.

Maackia

Uncredited · 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
PachydomidaePBDB
Diet
suspension feederPBDB, for Pholadomyida
Life habit
infaunalPBDB, for Pholadomyida
Motility
facultatively mobilePBDB, for Pholadomyida
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 22 million years on record.

The record covers at least 33.9 Mya to 11.63 Mya. No occurrence read is dated outside 56 Mya to 2.58 Mya.

Paleocene — about 0 of 6 occurrencesEocene — about 4 of 6 occurrencesEoceneOligocene — about 0 of 6 occurrencesMiocene — about 2 of 6 occurrencesMiocenePliocene — about 0 of 6 occurrencesPleistocene — about 0 of 6 occurrences57–55 Mya — about 0.1 occurrences55–53 Mya — about 0.3 occurrences53–52 Mya — about 0.3 occurrences52–50 Mya — about 0.3 occurrences50–48 Mya — about 0.3 occurrences48–46 Mya — about 0.3 occurrences46–44 Mya — about 0.3 occurrences44–42 Mya — about 0.3 occurrences42–40 Mya — about 0.3 occurrences40–39 Mya — about 0.3 occurrences39–37 Mya — about 0.3 occurrences37–35 Mya — about 0.3 occurrences35–33 Mya — about 0.2 occurrences24–22 Mya — about 0.1 occurrences22–20 Mya — about 0.1 occurrences20–18 Mya — about 0.1 occurrences18–16 Mya — about 0.1 occurrences16–14 Mya — about 0.1 occurrences14–13 Mya — about 0.1 occurrences13–11 Mya — about 0.2 occurrences11–8.9 Mya — about 0.4 occurrences8.9–7.1 Mya — about 0.4 occurrences7.1–5.2 Mya — about 0.4 occurrences5.2–3.4 Mya — about 0.1 occurrences3.4–1.5 Mya — about 0.0 occurrences33.9 Mya11.63 Mya57 Mya2 Mya

6 occurrences of Maackia on record. 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

6 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

3 formations

Okinoyama — 34.00°N, 131.00°EOgawa — 36.42°N, 138.08°EBangmai — 23.90°N, 100.02°E

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

Found in the same rock

196 taxa

The Paleobiology Database records 6 sites for Maackia, 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

3 references

Each of the 6 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. 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 Maackia

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Maackia 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 itPachydomidae through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Mendes 1954