Pterothrissus

Pterothrissus gissu, also known as the Japanese gissu, is a species of ray-finned fish in the family Albulidae. The Japanese gissu is an extremely rare marine fish that is distributed in deep water off northwest Pacific Ocean. Due to its natural habitat being in deep offshore waters, there is a lack of sufficient data on the Japanese gissu. This fish is known to pass through a leptocephalus larval stage, but only metamorphosed specimens have been available This species is the only member of its genus.

Pterothrissus

R. Mintern · Public Domain · via Wikidata/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
PterothrissinaePBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At least 61 million years on record.

The record covers at least 61.66 Mya to 129 ka. No occurrence read is dated outside 66 Mya to 11.7 ka.

Late Cretaceous — about 0 of 68 occurrencesPaleocene — about 7 of 68 occurrencesPaleoceneEocene — about 31 of 68 occurrencesEoceneOligocene — about 13 of 68 occurrencesOligoceneMiocene — about 12 of 68 occurrencesMiocenePliocene — about 3 of 68 occurrencesPleistocene — about 2 of 68 occurrences67–65 Mya — about 0.2 occurrences65–63 Mya — about 0.5 occurrences63–61 Mya — about 3 occurrences61–58 Mya — about 3 occurrences58–56 Mya — about 0.4 occurrences56–54 Mya — about 1 occurrence54–52 Mya — about 2 occurrences52–49 Mya — about 2 occurrences49–47 Mya — about 3 occurrences47–45 Mya — about 4 occurrences45–43 Mya — about 3 occurrences43–40 Mya — about 5 occurrences40–38 Mya — about 5 occurrences38–36 Mya — about 3 occurrences36–34 Mya — about 2 occurrences34–31 Mya — about 2 occurrences31–29 Mya — about 2 occurrences29–27 Mya — about 2 occurrences27–25 Mya — about 4 occurrences25–22 Mya — about 3 occurrences22–20 Mya — about 0.8 occurrences20–18 Mya — about 2 occurrences18–16 Mya — about 2 occurrences16–13 Mya — about 2 occurrences13–11 Mya — about 2 occurrences11–9.0 Mya — about 2 occurrences9.0–6.7 Mya — about 2 occurrences6.7–4.5 Mya — about 2 occurrences4.5–2.2 Mya — about 2 occurrences2.2–0 Mya — about 2 occurrences61.66 Mya129 ka67 Mya0 Mya

68 occurrences of Pterothrissus on record, most of them in the Eocene. 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

68 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

29 formations

Cook Mountain — 31.33°N, 95.52°WCook Mountain — 32.03°N, 88.70°WCook Mountain — 30.61°N, 96.57°WBarton Clay — 51.02°N, 1.32°WBarton Clay — 50.74°N, 1.69°WSelsey — 50.80°N, 1.21°WReklaw — 30.80°N, 96.72°WReklaw — 30.00°N, 97.25°WLellinge Greensand — 55.63°N, 12.62°ELellinge Greensand — 55.71°N, 12.60°EElmore — 50.80°N, 1.21°WJan Juc — 38.33°S, 144.30°EYorktown — 35.36°N, 76.82°WRupel — 51.22°N, 12.33°EAlzey — 49.83°N, 7.72°ETashlik — 49.06°N, 31.90°EPorters Creek — 32.02°N, 87.42°WEger — 47.90°N, 20.40°EBassevelde Sand — 51.08°N, 4.35°EKishima — 33.38°N, 129.93°EStone City — 30.67°N, 96.56°WCane River — 31.88°N, 93.37°WAgatdal — 70.58°N, 53.10°WMarnes de Saint-Etienne-d’Orthe — 43.57°N, 1.10°WPiney Point — 37.61°N, 76.76°WNanjemoy — 37.75°N, 77.33°WNavidad — 33.89°S, 71.83°WSant’Agata Fossili — 45.07°N, 7.94°ELiuchungchi — 23.44°N, 120.59°E

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The named rock units Pterothrissus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 further formations hold fewer occurrences each and are not listed. 33 occurrences have no formation on record, which is common for older literature.

Pterothrissus and its relatives

Eocene

Where Pterothrissus and its relatives were recorded in the Eocene.

Found in the same rock

2,158 taxa

The Paleobiology Database records 62 sites for Pterothrissus, 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

41 references

Each of the 68 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. 29 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 Pterothrissus

Credit
R. Mintern
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Pterothrissus 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 itPterothrissinae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hilgendorf 1877