Scydmaeninae

Scydmaeninae are a subfamily of small beetles, commonly called ant-like stone beetles or scydmaenines. These beetles occur worldwide, and the subfamily includes some 4,500 species in about 80 genera. Established as a family, they were reduced in status to a subfamily of Staphylinidae in 2009

Scydmaeninae

IES MANUEL GARCÍA BARROS A ESTRADA- PONTEVEDRA · CC BY-SA 2.0 · 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
antlike stone beetlePBDB
Sits inside
StaphylinidaePBDB
Motility
actively mobilePBDB, for Arthropoda
Environment
terrestrialPBDB, for Insecta

Time the record covers

At least 109 million years on record.

The record covers at least 110.1 Mya to 129 ka. No occurrence read is dated outside 113.2 Mya to 11.7 ka.

Early Cretaceous — about 5 of 143 occurrencesEarly CretaceousLate Cretaceous — about 52 of 143 occurrencesLate CretaceousPaleocene — about 0 of 143 occurrencesEocene — about 59 of 143 occurrencesEoceneOligocene — about 2 of 143 occurrencesOligoceneMiocene — about 8 of 143 occurrencesMiocenePliocene — about 1 of 143 occurrencesPleistocene — about 16 of 143 occurrences115–112 Mya — about 2 occurrences112–108 Mya — about 2 occurrences108–104 Mya — about 0.4 occurrences104–100 Mya — about 4 occurrences100–96 Mya — about 28 occurrences96–92 Mya — about 17 occurrences92–89 Mya — about 0.6 occurrences89–85 Mya — about 1.0 occurrences85–81 Mya — about 1 occurrence81–77 Mya — about 0.3 occurrences77–73 Mya — about 0.3 occurrences73–69 Mya — about 0.1 occurrences38–35 Mya — about 48 occurrences35–31 Mya — about 11 occurrences31–27 Mya — about 0.2 occurrences27–23 Mya — about 2 occurrences23–19 Mya — about 1 occurrence19–15 Mya — about 3 occurrences15–12 Mya — about 1.0 occurrences12–7.7 Mya — about 1 occurrence7.7–3.8 Mya — about 2 occurrences3.8–0 Mya — about 17 occurrences110.1 Mya129 ka115 Mya0 Mya

143 occurrences of Scydmaeninae on record, most of them in the Eocene. 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

143 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

7 formations

Titusville Till — 41.62°N, 79.64°WLas Penosas — 43.31°N, 4.45°WKheta — 71.31°N, 99.56°EForemost — 49.83°N, 111.70°WImuruk Volcanics — 65.88°N, 163.13°WNiveau du gypse d'Aix — 43.52°N, 5.45°EOlympia beds — 47.66°N, 122.43°W

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The named rock units Scydmaeninae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 131 occurrences have no formation on record, which is common for older literature.

Scydmaeninae and its relatives

Eocene

Where Scydmaeninae and its relatives were recorded in the Eocene.

Found in the same rock

4,069 taxa

The Paleobiology Database records 61 sites for Scydmaeninae, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

57 references

Each of the 143 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. 45 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 Scydmaeninae

Credit
IES MANUEL GARCÍA BARROS A ESTRADA- PONTEVEDRA
Licence
CC BY-SA 2.0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itStaphylinidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Leach 1815)