Cyclostomatida

Cyclostomatida, or cyclostomata, are an ancient order of stenolaemate bryozoans which first appeared in the Lower Ordovician. It consists of 7+ suborders, 59+ families, 373+ genera, and 666+ species. The cyclostome bryozoans were dominant in the Mesozoic; since that era, they have decreased. Currently, cyclostomes seldom constitute more than 20% of the species recorded in regional bryozoan faunas.

Cyclostomatida

Alison M. Fortunato · CC0 · 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
StenolaemataPBDB
Diet
suspension feederPBDB, for Stenolaemata
Life habit
epifaunalPBDB, for Bryozoa
Motility
stationary, attachedPBDB, for Stenolaemata
Vision
blindPBDB, for Stenolaemata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 59 million years on record.

The record covers at least 61.66 Mya to 2.58 Mya. No occurrence read is dated outside 66 Mya to 774 ka.

Late Cretaceous — about 0 of 19 occurrencesPaleocene — about 8 of 19 occurrencesPaleoceneEocene — about 1 of 19 occurrencesEoceneOligocene — about 1 of 19 occurrencesOligoceneMiocene — about 5 of 19 occurrencesMiocenePliocene — about 0 of 19 occurrencesPleistocene — about 4 of 19 occurrences67–65 Mya — about 0.9 occurrences65–63 Mya — about 2 occurrences63–61 Mya — about 1 occurrence61–58 Mya — about 1 occurrence58–56 Mya — about 3 occurrences56–54 Mya — about 0.1 occurrences38–36 Mya — about 0.5 occurrences36–34 Mya — about 0.5 occurrences29–27 Mya — about 0.1 occurrences27–25 Mya — about 0.5 occurrences25–22 Mya — about 0.4 occurrences18–16 Mya — about 0.1 occurrences16–13 Mya — about 1 occurrence13–11 Mya — about 2 occurrences9.0–6.7 Mya — about 0.5 occurrences6.7–4.5 Mya — about 1 occurrence4.5–2.2 Mya — about 1 occurrence2.2–0 Mya — about 3 occurrences61.66 Mya2.58 Mya67 Mya0 Mya

19 occurrences of Cyclostomatida on record, most of them in the Paleocene. 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

19 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

3 formations

Kolymbia — 36.25°N, 28.17°ERhodes — 36.42°N, 28.20°ELower Coralline Limestone — 35.93°N, 14.44°E

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The named rock units Cyclostomatida has been recovered from, largest first. Drawn where the rock is now, not where it formed. 14 occurrences have no formation on record, which is common for older literature.

Cyclostomatida and its relatives

Paleocene

Where Cyclostomatida and its relatives were recorded in the Paleocene.

Found in the same rock

431 taxa

The Paleobiology Database records 16 sites for Cyclostomatida, 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 19 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 Cyclostomatida

Credit
Alison M. Fortunato
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Cyclostomatida 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 itStenolaemata through timeFormations of the PaleoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Busk 1852