Yoldia (Megayoldia) montereyensis

Yoldia montereyensis Dall, 1893, a relative of Yoldia (Megayoldia) montereyensis — not Yoldia (Megayoldia) montereyensis itself

Not Yoldia (Megayoldia) montereyensis. This is Yoldia montereyensis Dall, 1893, a relative — both are Yoldiidae.

Paul Bartsch · CC0 · via GBIF. 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
MegayoldiaPBDB
Diet
deposit feederPBDB, for Sareptidae
Life habit
infaunalPBDB, for Sareptidae
Motility
facultatively mobilePBDB, for Sareptidae
Vision
blindPBDB, for Bivalvia

Time the record covers

At most 2.8 million years on record.

Every occurrence read is dated to somewhere between 5.333 Mya and 2.58 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Miocene — about 0 of 7 occurrencesPliocene — about 7 of 7 occurrencesPliocenePleistocene — about 0 of 7 occurrences5.3–5.2 Mya — about 0.0 occurrences5.2–5.1 Mya — about 0.0 occurrences5.1–5.0 Mya — about 0.0 occurrences5.0–4.8 Mya — about 0.0 occurrences4.8–4.7 Mya — about 0.0 occurrences4.7–4.6 Mya — about 0.0 occurrences4.6–4.5 Mya — about 0.0 occurrences4.5–4.3 Mya — about 0.0 occurrences4.3–4.2 Mya — about 0.0 occurrences4.2–4.1 Mya — about 0.0 occurrences4.1–4.0 Mya — about 0.0 occurrences4.0–3.8 Mya — about 0.0 occurrences3.8–3.7 Mya — about 0.0 occurrences3.7–3.6 Mya — about 0.2 occurrences3.6–3.5 Mya — about 0.8 occurrences3.5–3.3 Mya — about 0.8 occurrences3.3–3.2 Mya — about 0.8 occurrences3.2–3.1 Mya — about 0.8 occurrences3.1–3.0 Mya — about 0.8 occurrences3.0–2.8 Mya — about 0.8 occurrences2.8–2.7 Mya — about 0.8 occurrences2.7–2.6 Mya — about 0.8 occurrences2.6–2.5 Mya — about 0.0 occurrences5.83 Mya2.08 Mya

7 occurrences of Yoldia (Megayoldia) montereyensis on record, most of them in the Pliocene. 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

7 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

2 formations

Pico — 34.42°N, 118.70°WPico — 34.36°N, 118.56°WTowsley — 34.34°N, 118.54°W

Loading coastlines…

The named rock units Yoldia (Megayoldia) montereyensis 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.

Yoldia (Megayoldia) montereyensis and its relatives

Pliocene

Where Yoldia (Megayoldia) montereyensis and its relatives were recorded in the Pliocene.

Found in the same rock

153 taxa

The Paleobiology Database records 7 sites for Yoldia (Megayoldia) montereyensis, 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

2 references

Each of the 7 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 Yoldia montereyensis Dall, 1893

Source
GBIF
Credit
Paul Bartsch
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Yoldia (Megayoldia) montereyensis 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 itMegayoldia through timeFormations of the PlioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Dall 1893)