Robustichthys luopingensis

Robustichthys is an extinct genus of ray-finned fish from the Middle Triassic period, contains only one species R. luopingensis. It belonged to the clade Halecomorphi, which were once diverse during the Mesozoic Era, but which are today represented by only a single species, the bowfin. Halecomorphs are holosteans, a clade which first appeared in the fossil record during the Triassic.

Robustichthys luopingensis

Xu G. 2019. · CC BY-SA 4.0 · 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
RobustichthysPBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At most 970 thousand years on record.

Every occurrence read is dated to somewhere between 244.4 Mya and 243.43 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Middle Triassic — about 2 of 2 occurrencesMiddle Triassic244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–243 Mya — about 0.1 occurrences243–243 Mya — about 0.1 occurrences244.9 Mya242.93 Mya

2 occurrences of Robustichthys luopingensis on record, most of them in the Middle Triassic. 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

2 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

Guanling — 24.71°N, 104.33°E

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

Robustichthys luopingensis and its relatives

Middle Triassic

Where Robustichthys luopingensis and its relatives were recorded in the Middle Triassic.

Found in the same rock

10 taxa

The Paleobiology Database records 2 sites for Robustichthys luopingensis, 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 2 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 Robustichthys luopingensis

Credit
Xu G. 2019.
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Robustichthys luopingensis 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 itRobustichthys through timeFormations of the Middle TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Xu et al. 2014