Polyipnus polli

Polyipnus polli, commonly known as the round hatchetfish, is a species of ray-finned fish in the family Sternoptychidae. It occurs in deep water in the eastern Atlantic Ocean, at depths between about 250 and 600 metres.

Polyipnus polli

M. Pilar Olivar · CC BY-NC 4.0 · 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
PolyipnusPBDB
Diet
carnivorePBDB, for Sternoptychidae
Life habit
nektonic, depth=deepPBDB, for Sternoptychidae
Motility
fast-movingPBDB, for Sternoptychidae
Vision
well-developedPBDB, for Sternoptychidae
Environment
oceanic,marinePBDB, for Sternoptychidae

Time the record covers

At most 2.5 million years on record.

Every occurrence read is dated to somewhere between 2.58 Mya and 129 ka, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Pliocene — about 0 of 4 occurrencesPleistocene — about 4 of 4 occurrencesPleistoceneHolocene — about 0 of 4 occurrences2.7–2.6 Mya — about 0.0 occurrences2.6–2.5 Mya — about 0.1 occurrences2.5–2.4 Mya — about 0.1 occurrences2.4–2.3 Mya — about 0.1 occurrences2.3–2.2 Mya — about 0.1 occurrences2.2–2.1 Mya — about 0.1 occurrences2.1–2.0 Mya — about 0.1 occurrences2.0–1.8 Mya — about 0.1 occurrences1.8–1.7 Mya — about 0.1 occurrences1.7–1.6 Mya — about 0.1 occurrences1.6–1.5 Mya — about 0.1 occurrences1.5–1.4 Mya — about 0.1 occurrences1.4–1.3 Mya — about 0.1 occurrences1.3–1.2 Mya — about 0.1 occurrences1.2–1.1 Mya — about 0.1 occurrences1.1–1.0 Mya — about 0.1 occurrences1.0–924 ka Mya — about 0.1 occurrences924 ka–821 ka Mya — about 0.1 occurrences821 ka–719 ka Mya — about 0.2 occurrences719 ka–616 ka Mya — about 0.2 occurrences616 ka–513 ka Mya — about 0.2 occurrences513 ka–411 ka Mya — about 0.2 occurrences411 ka–308 ka Mya — about 0.2 occurrences308 ka–205 ka Mya — about 0.2 occurrences205 ka–103 ka Mya — about 0.2 occurrences3.08 Mya0 Mya

4 occurrences of Polyipnus polli on record, most of them in the Pleistocene. 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

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

1 formation

Lindos Bay — 36.09°N, 28.01°ELindos Bay — 36.36°N, 28.21°E

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The named rock units Polyipnus polli has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Polyipnus polli and its relatives

Pleistocene

Where Polyipnus polli and its relatives were recorded in the Pleistocene.

Found in the same rock

95 taxa

The Paleobiology Database records 4 sites for Polyipnus polli, 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 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Polyipnus polli

Source
GBIF
Credit
M. Pilar Olivar
Licence
CC BY-NC 4.0
Commercial use
the licence does not allow it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itPolyipnus through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Schultz 1961