Hiodon

Hiodontidae, commonly called mooneyes, is a family of ray-finned fish with a single included genus Hiodon. The genus comprise two extant species native to North America and three to five extinct species recorded from Paleocene to Eocene age fossils. They are large-eyed, fork-tailed fish that superficially resemble shads. The vernacular name comes from the metallic shine of their eyes.

Hiodon

NOAA · 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
HiodontidaePBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At least 33 million years on record.

The record covers at least 33.9 Mya to 11.7 ka. No occurrence read is dated outside 56 Mya to 0 Mya.

Paleocene — about 0 of 3 occurrencesEocene — about 2 of 3 occurrencesEoceneOligocene — about 0 of 3 occurrencesOligoceneMiocene — about 0 of 3 occurrencesPliocene — about 0 of 3 occurrencesPleistocene — about 0 of 3 occurrences57–55 Mya — about 0.1 occurrences55–53 Mya — about 0.2 occurrences53–51 Mya — about 0.2 occurrences51–50 Mya — about 0.2 occurrences50–48 Mya — about 0.2 occurrences48–46 Mya — about 0.2 occurrences46–44 Mya — about 0.2 occurrences44–42 Mya — about 0.2 occurrences42–40 Mya — about 0.2 occurrences40–38 Mya — about 0.2 occurrences38–36 Mya — about 0.2 occurrences36–34 Mya — about 0.2 occurrences34–32 Mya — about 0.1 occurrences32–30 Mya — about 0.1 occurrences30–29 Mya — about 0.1 occurrences29–27 Mya — about 0.0 occurrences1.9–0 Mya — about 1 occurrence33.9 Mya11.7 ka57 Mya0 Mya

3 occurrences of Hiodon on record. 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

3 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

Kishenehn — 48.22°N, 113.58°WClarno — 44.53°N, 120.36°W

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The named rock units Hiodon 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.

Found in the same rock

89 taxa

The Paleobiology Database records 3 sites for Hiodon, 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

3 references

Each of the 3 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 content3

Picture of Hiodon

Credit
NOAA
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
Hiodon alosoides · TCWC:Ichthyology:5433.02

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itHiodontidae through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Guo-Qing and Wilson 1994