Longchaeus

Longchaeus is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.

Longchaeus

Shellnut · 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
Sits inside
PyramidellidaePBDB
Diet
carnivorePBDB, for Pyramidellidae
Life habit
epifaunalPBDB, for Pyramidellidae
Motility
actively mobilePBDB, for Pyramidellidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 40 million years on record.

The record covers at least 41.03 Mya to 129 ka. No occurrence read is dated outside 48.07 Mya to 11.7 ka.

Eocene — about 4 of 33 occurrencesEoceneOligocene — about 0 of 33 occurrencesMiocene — about 15 of 33 occurrencesMiocenePliocene — about 7 of 33 occurrencesPleistocene — about 7 of 33 occurrences49–47 Mya — about 0.1 occurrences47–46 Mya — about 0.2 occurrences46–44 Mya — about 0.2 occurrences44–42 Mya — about 0.2 occurrences42–41 Mya — about 0.4 occurrences41–39 Mya — about 1 occurrence39–38 Mya — about 1 occurrence16–15 Mya — about 7 occurrences15–13 Mya — about 6 occurrences13–11 Mya — about 2 occurrences6.5–4.9 Mya — about 0.4 occurrences4.9–3.3 Mya — about 3 occurrences3.3–1.6 Mya — about 4 occurrences1.6–0 Mya — about 6 occurrences41.03 Mya129 ka49 Mya0 Mya

33 occurrences of Longchaeus on record, most of them in the Miocene. 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

33 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

Round Mountain Silt — 35.43°N, 118.81°WRound Mountain Silt — 35.44°N, 118.88°WAgueguexquite — 18.14°N, 94.44°WAgueguexquite — 18.07°N, 94.32°WOlcese — 35.45°N, 118.87°WOlcese — 35.45°N, 118.87°WGosport Sand — 31.54°N, 87.52°WGosport Sand — 31.55°N, 87.91°WRound Mountain — 35.43°N, 118.80°WRound Mountain — 35.45°N, 118.85°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.74°N, 118.28°WCaloosahatchee — 26.89°N, 82.01°WBermont — 26.89°N, 82.01°WTalparo — 10.67°N, 61.07°WMare — 10.64°N, 64.11°WFort Thompson — 26.76°N, 81.44°WWeches — 31.21°N, 96.02°WMoodys Branch — 32.33°N, 90.15°W

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The named rock units Longchaeus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Longchaeus and its relatives

Miocene

Where Longchaeus and its relatives were recorded in the Miocene.

Found in the same rock

1,452 taxa

The Paleobiology Database records 23 sites for Longchaeus, 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

15 references

Each of the 33 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. 3 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 Longchaeus

Credit
Shellnut
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Longchaeus 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 itPyramidellidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Mörch 1875)