Paratrachichthys

Paratrachichthys is a genus of slimeheads found in the Pacific Ocean. It consists of three species, all known as sandpaper fish.

Paratrachichthys

Edgar Ravenswood Waite · Public Domain · 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
TrachichthyidaePBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At most 770 thousand years on record.

The one occurrence read is dated to somewhere between 2.4 Mya and 1.63 Mya, which is a dating window rather than a span.

Pliocene — about 0 of 1 occurrencePleistocene — about 1 of 1 occurrencePleistocene2.4–2.4 Mya — about 0.0 occurrences2.4–2.3 Mya — about 0.1 occurrences2.3–2.3 Mya — about 0.1 occurrences2.3–2.2 Mya — about 0.1 occurrences2.2–2.1 Mya — about 0.1 occurrences2.1–2.1 Mya — about 0.1 occurrences2.1–2.0 Mya — about 0.1 occurrences2.0–2.0 Mya — about 0.1 occurrences2.0–1.9 Mya — about 0.1 occurrences1.9–1.8 Mya — about 0.1 occurrences1.8–1.8 Mya — about 0.1 occurrences1.8–1.7 Mya — about 0.1 occurrences1.7–1.7 Mya — about 0.1 occurrences1.7–1.6 Mya — about 0.0 occurrences2.9 Mya1.13 Mya

1 occurrence of Paratrachichthys 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

1 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.

Paratrachichthys and its relatives

Pleistocene

Where Paratrachichthys and its relatives were recorded in the Pleistocene.

Found in the same rock

11 taxa

The Paleobiology Database records 1 site for Paratrachichthys, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

1 reference

Each of the 1 occurrence 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 the Paleobiology Database's own record for the work.

Media and terms

Media content2

Picture of Paratrachichthys

Credit
Edgar Ravenswood Waite
Licence
Public Domain
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Paratrachichthys trailli · YPM:VZ:YPM ICH 023511

Smithsonian Open Access was 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 itTrachichthyidae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Waite 1899