Chordeumatida

Chordeumatida is a large order of millipedes containing more than 1,100 species. Also known as sausage millipedes, they are found nearly worldwide. Chordeumatida is the largest order in the superorder Nematophora, a group also known as spinning millipedes because their telsons feature spinnerets used to build nests of silk. These millipedes produce this silk to create chambers in which to molt or to lay their eggs.

Chordeumatida

N. Akkari · CC BY 4.0 · 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
CoelochetaPBDB
Motility
actively mobilePBDB, for Arthropoda

Time the record covers

At least 56 million years on record.

The record covers at least 93.9 Mya to 37.71 Mya. No occurrence read is dated outside 100.5 Mya to 33.9 Mya.

Early Cretaceous — about 0 of 14 occurrencesLate Cretaceous — about 5 of 14 occurrencesLate CretaceousPaleocene — about 0 of 14 occurrencesEocene — about 9 of 14 occurrencesEoceneOligocene — about 0 of 14 occurrences102–100 Mya — about 0.7 occurrences100–97 Mya — about 2 occurrences97–95 Mya — about 2 occurrences95–93 Mya — about 0.8 occurrences39–37 Mya — about 1 occurrence37–35 Mya — about 5 occurrences35–33 Mya — about 2 occurrences93.9 Mya37.71 Mya102 Mya33 Mya

14 occurrences of Chordeumatida on record, most of them in the Eocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

14 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.

Chordeumatida and its relatives

Eocene

Where Chordeumatida and its relatives were recorded in the Eocene.

Found in the same rock

1,768 taxa

The Paleobiology Database records 7 sites for Chordeumatida, 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

4 references

Each of the 14 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 Chordeumatida

Credit
N. Akkari
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Chordeumatida 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 itCoelocheta through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cook 1895