Pseudorca yokoyamai

Pseudorca yokoyamai is an extinct species of oceanic dolphin from the Calabrian stage of the Pleistocene of Japan, an extinct relative of the modern day false killer whale.

No picture of Pseudorca yokoyamai was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Pseudorca yokoyamai, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
PseudorcaPBDB
Diet
piscivore, carnivorePBDB, for Delphinidae
Life habit
aquatic, depth=surfacePBDB, for Cetacea
Motility
actively mobilePBDB, for Cetacea
Environment
marine,freshwaterPBDB, for Odontoceti

Time the record covers

At least 780 thousand years on record.

The record covers at least 2.58 Mya to 1.8 Mya. No occurrence read is dated outside 5.333 Mya to 774 ka.

Miocene — about 0 of 4 occurrencesPliocene — about 1 of 4 occurrencesPliocenePleistocene — about 3 of 4 occurrencesPleistocene5.5–5.3 Mya — about 0.0 occurrences5.3–5.1 Mya — about 0.1 occurrences5.1–4.9 Mya — about 0.1 occurrences4.9–4.7 Mya — about 0.1 occurrences4.7–4.5 Mya — about 0.1 occurrences4.5–4.4 Mya — about 0.1 occurrences4.4–4.2 Mya — about 0.1 occurrences4.2–4.0 Mya — about 0.1 occurrences4.0–3.8 Mya — about 0.1 occurrences3.8–3.6 Mya — about 0.1 occurrences3.6–3.4 Mya — about 0.1 occurrences3.4–3.2 Mya — about 0.1 occurrences3.2–3.1 Mya — about 0.1 occurrences3.1–2.9 Mya — about 0.1 occurrences2.9–2.7 Mya — about 0.1 occurrences2.7–2.5 Mya — about 0.1 occurrences2.5–2.3 Mya — about 0.2 occurrences2.3–2.1 Mya — about 0.2 occurrences2.1–1.9 Mya — about 0.2 occurrences1.9–1.8 Mya — about 0.2 occurrences1.8–1.6 Mya — about 0.4 occurrences1.6–1.4 Mya — about 0.4 occurrences1.4–1.2 Mya — about 0.4 occurrences1.2–1.0 Mya — about 0.4 occurrences1.0–830 ka Mya — about 0.4 occurrences830 ka–645 ka Mya — about 0.1 occurrences2.58 Mya1.8 Mya5.8 Mya274 ka

4 occurrences of Pseudorca yokoyamai on record, most of them in the Pleistocene. 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

4 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

3 formations

Sanuki — 41.11°N, 141.26°ESanuki — 35.35°N, 140.07°EUmegase — 35.15°N, 140.32°ENakazato — 35.45°N, 139.65°E

Loading coastlines…

The named rock units Pseudorca yokoyamai has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Pseudorca yokoyamai and its relatives

Pleistocene

Where Pseudorca yokoyamai and its relatives were recorded in the Pleistocene.

Found in the same rock

No other named taxon is catalogued from any of those sites.

The Paleobiology Database records 4 sites for Pseudorca yokoyamai, and this reads all of them.

Entered from

2 references

Each of the 4 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 content0

No picture of Pseudorca yokoyamai was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Pseudorca yokoyamai, or no answer at all. This entry cannot say which.

No 3D scan of Pseudorca yokoyamai 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 itPseudorca through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Matsumoto 1926