Megayoldia

Megayoldia

Uncredited · via Wikidata/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
YoldiinaePBDB
Diet
deposit feederPBDB, for Sareptidae
Life habit
infaunalPBDB, for Sareptidae
Motility
facultatively mobilePBDB, for Sareptidae
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 62 million years on record.

The record covers at least 66 Mya to 3.6 Mya. No occurrence read is dated outside 72.2 Mya to 2.58 Mya.

Late Cretaceous — about 1 of 100 occurrencesLate CretaceousPaleocene — about 3 of 100 occurrencesPaleoceneEocene — about 11 of 100 occurrencesEoceneOligocene — about 35 of 100 occurrencesOligoceneMiocene — about 35 of 100 occurrencesMiocenePliocene — about 15 of 100 occurrencesPleistocene — about 0 of 100 occurrences74–71 Mya — about 0.2 occurrences71–69 Mya — about 0.4 occurrences69–66 Mya — about 0.4 occurrences66–64 Mya — about 0.5 occurrences64–62 Mya — about 0.5 occurrences62–59 Mya — about 0.5 occurrences59–57 Mya — about 1 occurrence57–54 Mya — about 0.9 occurrences54–52 Mya — about 0.8 occurrences52–49 Mya — about 0.8 occurrences49–47 Mya — about 0.9 occurrences47–45 Mya — about 1 occurrence45–42 Mya — about 1 occurrence42–40 Mya — about 1 occurrence40–37 Mya — about 2 occurrences37–35 Mya — about 2 occurrences35–33 Mya — about 5 occurrences33–30 Mya — about 7 occurrences30–28 Mya — about 7 occurrences28–25 Mya — about 9 occurrences25–23 Mya — about 9 occurrences23–20 Mya — about 4 occurrences20–18 Mya — about 4 occurrences18–16 Mya — about 4 occurrences16–13 Mya — about 5 occurrences13–11 Mya — about 5 occurrences11–8.4 Mya — about 6 occurrences8.4–6.0 Mya — about 5 occurrences6.0–3.6 Mya — about 7 occurrences3.6–1.2 Mya — about 9 occurrences66 Mya3.6 Mya74 Mya1 Mya

100 occurrences of Megayoldia 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

100 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

48 formations

Gakkhinskaya — 58.25°N, 158.75°ETentokuji — 39.75°N, 140.41°EPico — 34.42°N, 118.70°WPico — 34.36°N, 118.56°WAluginskaya — 60.42°N, 165.92°EAluginskaya — 59.83°N, 165.00°EKakertskaya — 62.50°N, 165.00°ETyushevskaya — 54.50°N, 161.37°EIonayskaya — 62.25°N, 175.17°EIonayskaya — 62.43°N, 176.33°EKholmskaya — 47.05°N, 142.06°EMysa Ploskogo — 58.75°N, 163.75°EKylanskaya — 59.92°N, 165.00°EKaskadnaya — 54.16°N, 142.56°EOkobykayskaya — 52.57°N, 143.23°EVengeriyskaya — 54.16°N, 142.56°EKovachinskaya — 60.42°N, 165.92°EKovachinskaya — 57.78°N, 158.58°EAmaninskaya — 58.00°N, 158.20°EKamchikskaya — 62.50°N, 165.00°EKuluvenskaya — 58.50°N, 159.17°ELimimtevayamskaya — 58.97°N, 163.92°ESnatol'skaya — 57.78°N, 158.58°EViventekskaya — 57.78°N, 158.58°EUtkholokskaya — 57.53°N, 157.17°EBlakeley — 47.58°N, 122.48°WBlakeley — 48.16°N, 123.83°WSankebetsu — 44.36°N, 141.70°EDaekhuriinskaya — 51.83°N, 143.17°E

Loading coastlines…

The named rock units Megayoldia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 24 further formations hold fewer occurrences each and are not listed. 2 occurrences have no formation on record, which is common for older literature.

Megayoldia and its relatives

Oligocene

Where Megayoldia and its relatives were recorded in the Oligocene.

Found in the same rock

677 taxa

The Paleobiology Database records 48 sites for Megayoldia, 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

16 references

Each of the 100 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. 4 further references are not listed. 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 Megayoldia

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Megayoldia 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itYoldiinae through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Verrill and Bush 1897)