Idas

Idas is a genus of saltwater clams, marine bivalve molluscs in the family Mytilidae, the mussels.

Idas

Manuel CABALLER · 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
ModiolinaePBDB
Diet
suspension feederPBDB, for Modiolinae
Life habit
semi-infaunalPBDB, for Modiolinae
Motility
stationary, attached, epibiontPBDB, for Modiolinae
Vision
blindPBDB, for Bivalvia
Environment
lagoonal,coastal,inner shelf,outer shelf,oceanic,brackish,freshwaterPBDB, for Mytilidae

Time the record covers

At least 44 million years on record.

The record covers at least 56 Mya to 11.63 Mya. No occurrence read is dated outside 66 Mya to 5.333 Mya.

Late Cretaceous — about 0 of 16 occurrencesPaleocene — about 1 of 16 occurrencesPaleoceneEocene — about 0 of 16 occurrencesEoceneOligocene — about 13 of 16 occurrencesOligoceneMiocene — about 1 of 16 occurrencesMiocenePliocene — about 0 of 16 occurrences67–65 Mya — about 0.1 occurrences65–63 Mya — about 0.2 occurrences63–61 Mya — about 0.2 occurrences61–59 Mya — about 0.2 occurrences59–57 Mya — about 0.2 occurrences57–55 Mya — about 0.1 occurrences38–36 Mya — about 0.2 occurrences36–34 Mya — about 0.6 occurrences34–31 Mya — about 3 occurrences31–29 Mya — about 3 occurrences29–27 Mya — about 3 occurrences27–25 Mya — about 2 occurrences25–23 Mya — about 2 occurrences23–21 Mya — about 0.3 occurrences21–19 Mya — about 0.1 occurrences13–10 Mya — about 0.2 occurrences10–8.3 Mya — about 0.3 occurrences8.3–6.2 Mya — about 0.3 occurrences6.2–4.1 Mya — about 0.1 occurrences56 Mya11.63 Mya67 Mya4 Mya

16 occurrences of Idas on record, most of them in the Oligocene. 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

16 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

4 formations

Lincoln Creek — 47.29°N, 123.52°WLincoln Creek — 46.28°N, 123.81°WPysht — 48.16°N, 123.90°WPysht — 48.19°N, 124.07°WMakah — 48.30°N, 124.42°WMartinez — 38.00°N, 122.20°W

Loading coastlines…

The named rock units Idas has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Idas and its relatives

Oligocene

Where Idas and its relatives were recorded in the Oligocene.

Found in the same rock

114 taxa

The Paleobiology Database records 14 sites for Idas, 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 16 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 Idas

Credit
Manuel CABALLER
Licence
CC BY 4.0
Commercial use
the licence allows it

CT scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Idas simpsoni · usnm:invertebrate zoology:304427

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 itModiolinae through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Jeffreys 1876