Exechiini

Exechiini is a tribe of fungus gnats in the family Mycetophilidae. There are about 13 genera and at least 130 described species in Exechiini.

Exechiini

janet graham · CC BY 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
Sits inside
MycetophilinaePBDB
Motility
actively mobilePBDB, for Arthropoda
Environment
terrestrialPBDB, for Insecta

Time the record covers

At least 48 million years on record.

The record covers at least 48.07 Mya to 11.7 ka. No occurrence read is dated outside 56 Mya to 0 Mya.

Paleocene — about 0 of 55 occurrencesEocene — about 30 of 55 occurrencesEoceneOligocene — about 17 of 55 occurrencesOligoceneMiocene — about 7 of 55 occurrencesMiocenePliocene — about 0 of 55 occurrencesPleistocene — about 0 of 55 occurrences57–55 Mya — about 0.1 occurrences55–53 Mya — about 0.2 occurrences53–51 Mya — about 0.2 occurrences51–50 Mya — about 0.9 occurrences50–48 Mya — about 1.0 occurrences48–46 Mya — about 0.9 occurrences46–44 Mya — about 0.3 occurrences44–42 Mya — about 0.3 occurrences42–40 Mya — about 0.1 occurrences38–36 Mya — about 10 occurrences36–34 Mya — about 13 occurrences34–32 Mya — about 3 occurrences32–30 Mya — about 2 occurrences30–29 Mya — about 2 occurrences29–27 Mya — about 3 occurrences27–25 Mya — about 5 occurrences25–23 Mya — about 5 occurrences23–21 Mya — about 1 occurrence21–19 Mya — about 1 occurrence19–17 Mya — about 2 occurrences17–15 Mya — about 2 occurrences15–13 Mya — about 1 occurrence1.9–0 Mya — about 1 occurrence48.07 Mya11.7 ka57 Mya0 Mya

55 occurrences of Exechiini 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

55 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

11 formations

Rott — 50.75°N, 7.26°ERott — 50.75°N, 7.26°EBouldnor — 50.74°N, 1.36°WLatah — 46.53°N, 116.79°WGreen River — 41.55°N, 109.51°WAustralian Creek — 52.97°N, 122.50°WNiveau du gypse d'Aix — 43.52°N, 5.45°ESalt — 47.69°N, 7.53°EFlorissant — 38.92°N, 105.28°WRenova — 45.21°N, 112.18°WKishenehn — 48.39°N, 113.70°WArgiles d'lignite du Soissonnais — 49.33°N, 2.66°E

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The named rock units Exechiini has been recovered from, largest first. Drawn where the rock is now, not where it formed. 29 occurrences have no formation on record, which is common for older literature.

Exechiini and its relatives

Eocene

Where Exechiini and its relatives were recorded in the Eocene.

Found in the same rock

2,758 taxa

The Paleobiology Database records 25 sites for Exechiini, 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

26 references

Each of the 55 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. 14 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 Exechiini

Credit
janet graham
Licence
CC BY 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 itMycetophilinae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Enderlein 1936