Acalyptratae

The Acalyptratae or Acalyptrata are a subsection of the Schizophora, which are a section of the order Diptera, the "true flies". In various contexts the Acalyptratae also are referred to informally as the acalyptrate muscoids, or acalyptrates, as opposed to the Calyptratae. All forms of the name refer to the lack of calypters in the members of this subsection of flies. An alternative name, Acalypterae is current, though in minority usage. It was first used by Pierre-Justin-Marie Macquart in 1835 for a section of his tribe Muscides; he used it to refer to all acalyptrates plus scathophagids and phorids, but excluding Conopidae.

Acalyptratae

Eric Guinther · 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
SchizophoraPBDB
Motility
actively mobilePBDB, for Arthropoda
Environment
terrestrialPBDB, for Insecta

Time the record covers

At least 113 million years on record.

The record covers at least 113.2 Mya to 11.7 ka. No occurrence read is dated outside 119.57 Mya to 0 Mya.

Early Cretaceous — about 1 of 124 occurrencesEarly CretaceousLate Cretaceous — about 0 of 124 occurrencesPaleocene — about 0 of 124 occurrencesEocene — about 104 of 124 occurrencesEoceneOligocene — about 9 of 124 occurrencesOligoceneMiocene — about 5 of 124 occurrencesMiocenePliocene — about 1 of 124 occurrencesPleistocene — about 0 of 124 occurrences122–118 Mya — about 0.3 occurrences118–114 Mya — about 0.6 occurrences114–110 Mya — about 0.1 occurrences53–49 Mya — about 0.4 occurrences49–45 Mya — about 0.6 occurrences41–37 Mya — about 30 occurrences37–33 Mya — about 74 occurrences33–28 Mya — about 3 occurrences28–24 Mya — about 4 occurrences24–20 Mya — about 2 occurrences20–16 Mya — about 3 occurrences16–12 Mya — about 2 occurrences8.1–4.1 Mya — about 0.2 occurrences4.1–0 Mya — about 5 occurrences113.2 Mya11.7 ka122 Mya0 Mya

124 occurrences of Acalyptratae 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

124 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

9 formations

Bouldnor — 50.74°N, 1.36°WBouldnor — 50.75°N, 1.35°WRott — 50.75°N, 7.26°EFlorissant — 38.92°N, 105.28°WFlorissant — 38.93°N, 105.24°WGreen River — 39.00°N, 108.00°WAustralian Creek — 52.97°N, 122.50°WSalt — 47.69°N, 7.53°ECampagne-Calavon — 43.85°N, 5.58°ERita Blanca — 35.71°N, 102.45°WRenova — 45.21°N, 112.18°W

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The named rock units Acalyptratae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 110 occurrences have no formation on record, which is common for older literature.

Acalyptratae and its relatives

Eocene

Where Acalyptratae and its relatives were recorded in the Eocene.

Found in the same rock

3,604 taxa

The Paleobiology Database records 55 sites for Acalyptratae, 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

49 references

Each of the 124 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. 37 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 Acalyptratae

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

No 3D scan of Acalyptratae 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 itSchizophora through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Macquart 1835