Yoldia

Yoldia is a genus of marine bivalve mollusks in the family Yoldiidae. Some former members of the genus are now known as Portlandia. The genus was named after Alfonso de Aguirre y Yoldi, Conde de Yoldi (1764–1852), a Spanish nobleman in charge of the royal naturalistic collection of Denmark.

Yoldia

Eric A. Lazo-Wasem · 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
YoldiidaePBDB
Diet
deposit feederPBDB
Life habit
infaunalPBDB
Motility
facultatively mobilePBDB
Vision
blindPBDB, for Bivalvia
Environment
inner shelf,outer shelf,oceanicPBDB, for Yoldiidae

Time the record covers

At least 335 million years on record.

The record covers at least 335.4 Mya to 11.7 ka. No occurrence read is dated outside 358.86 Mya to 0 Mya.

Devonian — about 0 of 779 occurrencesCarboniferous — about 6 of 779 occurrencesCarboniferousPermian — about 6 of 779 occurrencesPermianEarly Triassic — about 0 of 779 occurrencesMiddle Triassic — about 0 of 779 occurrencesLate Triassic — about 0 of 779 occurrencesEarly Jurassic — about 0 of 779 occurrencesMiddle Jurassic — about 0 of 779 occurrencesLate Jurassic — about 0 of 779 occurrencesEarly Cretaceous — about 11 of 779 occurrencesEarly CretaceousLate Cretaceous — about 62 of 779 occurrencesLate CretaceousPaleocene — about 14 of 779 occurrencesEocene — about 73 of 779 occurrencesOligocene — about 209 of 779 occurrencesMiocene — about 233 of 779 occurrencesPliocene — about 69 of 779 occurrencesPleistocene — about 92 of 779 occurrences366–354 Mya — about 0.1 occurrences354–342 Mya — about 0.4 occurrences342–329 Mya — about 1 occurrence329–317 Mya — about 0.2 occurrences317–305 Mya — about 4 occurrences305–293 Mya — about 2 occurrences293–281 Mya — about 1 occurrence281–268 Mya — about 3 occurrences268–256 Mya — about 1 occurrence122–110 Mya — about 6 occurrences110–98 Mya — about 18 occurrences98–85 Mya — about 17 occurrences85–73 Mya — about 11 occurrences73–61 Mya — about 27 occurrences61–49 Mya — about 22 occurrences49–37 Mya — about 40 occurrences37–24 Mya — about 201 occurrences24–12 Mya — about 173 occurrences12–0 Mya — about 251 occurrences335.4 Mya11.7 ka366 Mya0 Mya

779 occurrences of Yoldia on record, most of them in the Miocene. 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

779 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

223 formations

Byram — 32.01°N, 89.38°WByram — 32.18°N, 90.25°WByram — 32.32°N, 90.86°WByram — 32.41°N, 90.84°WWoodbine — 31.95°N, 97.32°WWoodbine — 32.77°N, 97.01°WWoodbine — 32.86°N, 97.06°WWoodbine — 33.71°N, 96.46°WWoodbine — 33.81°N, 96.83°WWoodbine — 33.66°N, 96.45°WWoodbine — 32.05°N, 97.23°WWoodbine — 32.35°N, 97.39°WWoodbine — 33.05°N, 96.99°WWoodbine — 32.99°N, 96.95°WWoodbine — 33.66°N, 96.91°WWoodbine — 33.68°N, 96.85°WWoodbine — 33.76°N, 96.67°WWoodbine — 33.90°N, 95.57°WWoodbine — 33.84°N, 95.76°WAmaninskaya — 58.00°N, 158.20°ENorwich Crag — 52.58°N, 1.38°ENorwich Crag — 52.12°N, 1.48°EShoal River — 30.72°N, 86.12°WShoal River — 30.72°N, 86.04°WShoal River — 30.65°N, 86.04°WShoal River — 30.63°N, 86.17°WShoal River — 30.69°N, 86.65°WGakkhinskaya — 58.25°N, 158.75°EMoodys Branch — 32.85°N, 90.41°WMoodys Branch — 32.95°N, 90.17°WMoodys Branch — 32.30°N, 90.18°WMoodys Branch — 33.96°N, 92.19°WMoodys Branch — 33.86°N, 92.29°WMoodys Branch — 31.97°N, 88.53°WMoodys Branch — 32.17°N, 88.83°WRed Bluff — 30.98°N, 88.73°WRed Bluff — 31.81°N, 88.69°WRed Bluff — 31.66°N, 88.66°WOmagari — 42.83°N, 143.67°EBlakeley — 47.58°N, 122.48°WBlakeley — 48.16°N, 123.95°WBlakeley — 47.53°N, 122.03°WBlakeley — 47.57°N, 122.42°WYorktown — 35.51°N, 77.62°WYorktown — 37.10°N, 76.39°WYorktown — 37.25°N, 76.50°WYorktown — 37.02°N, 76.58°WEugene — 44.06°N, 123.22°WEugene — 44.05°N, 123.09°WEugene — 45.21°N, 123.20°WEugene — 44.04°N, 123.06°WEugene — 44.94°N, 123.03°WEugene — 44.88°N, 123.13°WChipola — 30.44°N, 85.19°WChipola — 30.65°N, 86.04°WChipola — 30.72°N, 86.04°WChipola — 30.57°N, 85.84°WTemblor — 35.50°N, 119.78°WTemblor — 35.88°N, 120.10°WTemblor — 35.40°N, 119.81°WTemblor — 35.43°N, 118.83°WCareaga Sandstone — 34.74°N, 120.41°WCareaga Sandstone — 34.86°N, 120.46°WCareaga Sandstone — 34.82°N, 120.45°WUtkholokskaya — 57.53°N, 157.17°ENutovskaya — 52.57°N, 143.23°EPittsburg Bluff — 45.86°N, 123.19°WPittsburg Bluff — 46.13°N, 123.37°WPittsburg Bluff — 45.69°N, 123.19°WPittsburg Bluff — 45.46°N, 123.12°WPittsburg Bluff — 46.00°N, 123.26°WPittsburg Bluff — 45.83°N, 123.98°WOak Grove — 30.92°N, 86.57°WViventekskaya — 57.78°N, 158.58°EBerada — 51.10°N, 5.80°EStepovak — 55.46°N, 160.98°WStepovak — 55.37°N, 161.36°WStepovak — 55.66°N, 160.23°WTakaradayskaya — 47.00°N, 142.10°EShitakara — 43.25°N, 144.08°E

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The named rock units Yoldia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 199 further formations hold fewer occurrences each and are not listed. 117 occurrences have no formation on record, which is common for older literature.

Yoldia and its relatives

Miocene

Where Yoldia and its relatives were recorded in the Miocene.

Found in the same rock

2,834 taxa

The Paleobiology Database records 446 sites for Yoldia, and this reads 240 of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

178 references

Each of the 779 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. 166 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 Yoldia

Credit
Eric A. Lazo-Wasem
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Yoldia 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.

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 itYoldiidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Möller 1842)