Clitellata

The Clitellata are a class of annelid worms, characterized by having a clitellum – the 'collar' that forms a reproductive cocoon during part of their life cycles. The clitellates comprise around 8,000 species. Unlike the class of Polychaeta, they do not have parapodia and their heads are less developed.

Clitellata

Luis Miguel Bugallo Sánchez ( Lmbuga Commons )( Lmbuga Galipedia ) Publicada por/ Publish by : Luis Miguel Bugallo Sá… · 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
AnnelidaPBDB

Time the record covers

At least 395 million years on record.

The record covers at least 432.9 Mya to 37.71 Mya. No occurrence read is dated outside 438.6 Mya to 33.9 Mya.

Ordovician — about 0 of 11 occurrencesSilurian — about 1 of 11 occurrencesDevonian — about 0 of 11 occurrencesCarboniferous — about 2 of 11 occurrencesCarboniferousPermian — about 3 of 11 occurrencesPermianEarly Triassic — about 1 of 11 occurrencesMiddle Triassic — about 0 of 11 occurrencesLate Triassic — about 0 of 11 occurrencesEarly Jurassic — about 0 of 11 occurrencesMiddle Jurassic — about 0 of 11 occurrencesLate Jurassic — about 0 of 11 occurrencesEarly Cretaceous — about 3 of 11 occurrencesEarly CretaceousLate Cretaceous — about 0 of 11 occurrencesPaleocene — about 0 of 11 occurrencesEocene — about 1 of 11 occurrencesOligocene — about 0 of 11 occurrences447–433 Mya — about 1 occurrence320–306 Mya — about 2 occurrences306–292 Mya — about 1 occurrence292–278 Mya — about 0.7 occurrences278–264 Mya — about 1.0 occurrences264–250 Mya — about 0.0 occurrences250–236 Mya — about 1 occurrence124–110 Mya — about 3 occurrences40–26 Mya — about 1 occurrence432.9 Mya37.71 Mya447 Mya26 Mya

11 occurrences of Clitellata on record, most of them in the Permian. 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

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

6 formations

Kladno — 50.10°N, 13.72°EProsecne — 50.62°N, 15.32°EVrchabi — 50.55°N, 15.38°EPetropavlovka — 52.03°N, 55.63°EAbrahamskraal — 32.62°S, 20.42°EBrandon Bridge — 43.03°N, 88.21°W

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The named rock units Clitellata has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.

Clitellata and its relatives

Permian

Where Clitellata and its relatives were recorded in the Permian.

Found in the same rock

181 taxa

The Paleobiology Database records 8 sites for Clitellata, 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

7 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 Clitellata

Credit
Luis Miguel Bugallo Sánchez ( Lmbuga Commons )( Lmbuga Galipedia ) Publicada por/ Publish by : Luis Miguel Bugallo Sá…
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Clitellata was found in Sketchfab.

Smithsonian Open Access and MorphoSource were 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 itAnnelida through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.