Barleeia

Barleeia, or the barleysnails, is a genus of very small sea snails. They are marine gastropod micromollusks in the family Barleeiidae. These snails are usually only a couple of millimeters in length.

Barleeia

H. Zell · 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
Also called
barleysnailPBDB
Sits inside
BarleeiidaePBDB
Diet
grazerPBDB, for Barleeiidae
Life habit
epifaunalPBDB, for Barleeiidae
Motility
actively mobilePBDB, for Barleeiidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 5.2 million years on record.

The record covers at least 5.333 Mya to 129 ka. No occurrence read is dated outside 11.63 Mya to 0 Mya.

Miocene — about 2 of 62 occurrencesMiocenePliocene — about 2 of 62 occurrencesPliocenePleistocene — about 58 of 62 occurrencesPleistoceneHolocene — about 0 of 62 occurrences12–11 Mya — about 0.0 occurrences11–11 Mya — about 0.1 occurrences11–11 Mya — about 0.1 occurrences11–10 Mya — about 0.1 occurrences10–9.7 Mya — about 0.1 occurrences9.7–9.3 Mya — about 0.1 occurrences9.3–8.9 Mya — about 0.1 occurrences8.9–8.5 Mya — about 0.1 occurrences8.5–8.1 Mya — about 0.1 occurrences8.1–7.7 Mya — about 0.1 occurrences7.7–7.3 Mya — about 0.1 occurrences7.3–6.9 Mya — about 0.3 occurrences6.9–6.5 Mya — about 0.3 occurrences6.5–6.1 Mya — about 0.3 occurrences6.1–5.7 Mya — about 0.3 occurrences5.7–5.3 Mya — about 0.2 occurrences5.3–4.9 Mya — about 0.1 occurrences4.9–4.4 Mya — about 0.1 occurrences4.4–4.0 Mya — about 0.1 occurrences4.0–3.6 Mya — about 0.1 occurrences3.6–3.2 Mya — about 0.5 occurrences3.2–2.8 Mya — about 0.5 occurrences2.8–2.4 Mya — about 2 occurrences2.4–2.0 Mya — about 5 occurrences2.0–1.6 Mya — about 5 occurrences1.6–1.2 Mya — about 5 occurrences1.2–809 ka Mya — about 5 occurrences809 ka–404 ka Mya — about 14 occurrences404 ka–0 Mya — about 21 occurrences5.333 Mya129 ka12.1 Mya0 Mya

62 occurrences of Barleeia 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

62 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

Unnamed — 33.24°N, 119.51°WUnnamed — 33.24°N, 119.55°WLomita Marl — 33.74°N, 118.29°WLomita Marl — 33.75°N, 118.30°WDiscovery Point — 29.00°N, 118.27°WDiscovery Point — 29.00°N, 118.23°WTimms Point Silt — 33.73°N, 118.28°WQuaternary terrace — 33.75°N, 118.33°WQuaternary terrace — 33.76°N, 118.35°WSan Pedro Sand — 33.74°N, 118.29°WPalau Limestone — 7.37°N, 134.58°EEscudo de Veraguas — 9.10°N, 81.55°WChagres Sandstone — 9.33°N, 80.00°WSwan Cay — 9.45°N, 82.30°WKef El Haroun — 33.58°N, 7.65°WBay Point — 32.78°N, 117.24°WPico — 34.33°N, 118.72°W

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The named rock units Barleeia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 occurrences have no formation on record, which is common for older literature.

Barleeia and its relatives

Pleistocene

Where Barleeia and its relatives were recorded in the Pleistocene.

Found in the same rock

489 taxa

The Paleobiology Database records 29 sites for Barleeia, 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 62 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 content1

Picture of Barleeia

Credit
H. Zell
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Barleeia 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 itBarleeiidae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Clark 1853