Metaxia

Metaxia is a genus of minute sea snails with right-handed shell-coiling, marine gastropod mollusks or micromollusks in the family Triphoridae, which are mostly left-handed in shell-coiling.

Metaxia

John Bollons (collector) · CC BY 4.0 · 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
MetaxiinaePBDB
Diet
carnivorePBDB, for Triphoridae
Life habit
epifaunalPBDB, for Triphoridae
Motility
actively mobilePBDB, for Triphoridae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 20 million years on record.

The record covers at least 20.45 Mya to 129 ka. No occurrence read is dated outside 23.04 Mya to 0 Mya.

Oligocene — about 0 of 18 occurrencesMiocene — about 1 of 18 occurrencesMiocenePliocene — about 2 of 18 occurrencesPliocenePleistocene — about 15 of 18 occurrencesPleistocene24–23 Mya — about 0.1 occurrences23–22 Mya — about 0.3 occurrences22–21 Mya — about 0.3 occurrences21–20 Mya — about 0.3 occurrences5.5–4.7 Mya — about 0.7 occurrences4.7–3.9 Mya — about 0.9 occurrences3.9–3.1 Mya — about 0.4 occurrences3.1–2.4 Mya — about 0.8 occurrences2.4–1.6 Mya — about 3 occurrences1.6–785 ka Mya — about 3 occurrences785 ka–0 Mya — about 9 occurrences20.45 Mya129 ka23.5 Mya0 Mya

18 occurrences of Metaxia on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. 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

18 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

10 formations

Quaternary terrace — 33.75°N, 118.33°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes — 33.63°N, 117.90°WUnnamed — 33.24°N, 119.51°WOrtovero Clay — 44.10°N, 8.23°EFalun de Saucats — 44.66°N, 0.57°WSwan Cay — 9.45°N, 82.30°WCoralline Crag — 52.75°N, 1.53°ESan Pedro Sand — 33.74°N, 118.28°WRhodes — 36.42°N, 28.20°E

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The named rock units Metaxia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.

Metaxia and its relatives

Pleistocene

Where Metaxia and its relatives were recorded in the Pleistocene.

Found in the same rock

1,147 taxa

The Paleobiology Database records 11 sites for Metaxia, 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

12 references

Each of the 18 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 Metaxia

Credit
John Bollons (collector)
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Metaxia 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 itMetaxiinae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Monterosato 1884