Julidae

Julidae is a family of millipedes in the order Julida, containing more than 600 species in around 20 genera. Its members are largely confined to the Western Palaearctic, with only a few species extending into the Oriental and Afrotropical realms. They are united by a characteristic form of the mouthparts, and are classified in the superfamily Juloidea of the order Julida, alongside the families Trichoblaniulidae, Rhopaloiulidae and Trichonemasomatidae.

Julidae

Jörg Spelda, Hans S. Reip, Ulla Oliveira–Biener, Roland R. Melzer · 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
JuloideaPBDB
Motility
actively mobilePBDB, for Arthropoda

Time the record covers

At least 33 million years on record.

The record covers at least 33.9 Mya to 129 ka. No occurrence read is dated outside 37.71 Mya to 11.7 ka.

Eocene — about 4 of 11 occurrencesEoceneOligocene — about 2 of 11 occurrencesOligoceneMiocene — about 2 of 11 occurrencesMiocenePliocene — about 0 of 11 occurrencesPleistocene — about 3 of 11 occurrences38–37 Mya — about 0.6 occurrences37–36 Mya — about 1 occurrence36–35 Mya — about 1 occurrence35–33 Mya — about 0.8 occurrences33–32 Mya — about 0.2 occurrences32–31 Mya — about 0.2 occurrences31–29 Mya — about 0.2 occurrences29–28 Mya — about 0.2 occurrences28–27 Mya — about 0.2 occurrences27–26 Mya — about 0.3 occurrences26–24 Mya — about 0.3 occurrences24–23 Mya — about 0.3 occurrences23–22 Mya — about 0.0 occurrences13–12 Mya — about 2 occurrences3.8–2.6 Mya — about 0.0 occurrences2.6–1.3 Mya — about 0.7 occurrences1.3–0 Mya — about 2 occurrences33.9 Mya129 ka38.5 Mya0 Mya

11 occurrences of Julidae on record. 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

11 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

1 formation

Thermalsinterkalk — 48.41°N, 9.55°E

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The named rock units Julidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Found in the same rock

742 taxa

The Paleobiology Database records 8 sites for Julidae, 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

8 references

Each of the 11 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. 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 Julidae

Credit
Jörg Spelda, Hans S. Reip, Ulla Oliveira–Biener, Roland R. Melzer
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Julidae 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 itJuloidea through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Leach 1814