Polydora

Polydora is a genus of annelid worms. It contains marine polychaete species that live in mud, holes bored in rocks, and holes bored in the shells of shellfish.

Polydora

P.M. Brasser in Slabber, M. · Public Domain · 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
SpionidaePBDB
Diet
detritivorePBDB, for Spionidae
Life habit
low-level epifaunalPBDB, for Spionidae
Motility
stationary, attached, epibiontPBDB, for Spionidae

Time the record covers

At least 93 million years on record.

The record covers at least 93.9 Mya to 129 ka. No occurrence read is dated outside 100.5 Mya to 11.7 ka.

Early Cretaceous — about 0 of 20 occurrencesLate Cretaceous — about 3 of 20 occurrencesLate CretaceousPaleocene — about 0 of 20 occurrencesEocene — about 0 of 20 occurrencesOligocene — about 0 of 20 occurrencesMiocene — about 7 of 20 occurrencesMiocenePliocene — about 1 of 20 occurrencesPleistocene — about 9 of 20 occurrences103–99 Mya — about 0.2 occurrences99–96 Mya — about 0.5 occurrences96–92 Mya — about 0.3 occurrences89–85 Mya — about 0.1 occurrences85–82 Mya — about 0.9 occurrences75–72 Mya — about 0.1 occurrences72–68 Mya — about 0.6 occurrences68–65 Mya — about 0.4 occurrences21–17 Mya — about 2 occurrences17–14 Mya — about 2 occurrences14–10 Mya — about 4 occurrences6.8–3.4 Mya — about 0.7 occurrences3.4–0 Mya — about 9 occurrences93.9 Mya129 ka103 Mya0 Mya

20 occurrences of Polydora on record, most of them in the Pleistocene. 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

20 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

10 formations

James City — 35.04°N, 76.99°WAcredale — 36.79°N, 76.17°WChoptank — 38.39°N, 76.57°WChoptank — 38.41°N, 76.48°WChoptank — 38.62°N, 76.12°WHookton — 40.98°N, 124.11°WFleming — 31.00°N, 93.67°WDakota — 35.91°N, 110.89°WCalvert — 38.64°N, 76.52°WTielrode — 51.12°N, 4.18°EPrairie Bluff — 32.05°N, 86.78°WBerchem — 51.21°N, 4.42°E

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The named rock units Polydora has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Polydora and its relatives

Pleistocene

Where Polydora and its relatives were recorded in the Pleistocene.

Found in the same rock

634 taxa

The Paleobiology Database records 20 sites for Polydora, 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

11 references

Each of the 20 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 content2

Picture of Polydora

Credit
P.M. Brasser in Slabber, M.
Licence
Public Domain
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial-ShareAlike
Commercial use
the licence does not allow it

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 itSpionidae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Bosk 1801