Habroichthys

Habroichthys is an extinct genus of marine peltopleuriform ray-finned fish from the Middle Triassic, and is the only genus of the monotypic family Habroichthyidae. Fossils of the fish have been found in a number of countries being Slovenia, Italy, and China. Species within the genus were small with the largest species having a standard length of only 50 millimetres (2.0 in). Due to their small size, the preservation of the skull bones of the fish are usually poorly preserved, resulting in species being identified by the number of flank scales along with the placement of certain fins on the body. Within their environment, Habroichthys would have been a very common fish and would have contributed a large amount of biomass in their ecosystems. Overall, these fish would have most likely behaved like a number of modern schooling fish that swim near the water's surface. There are currently 12 valid species attributed to the genus.

Habroichthys

Conedera, D.; Hitij, T.; Monari, S.; Gatto, R.; Andreetti, M.; Tintori, A. · CC BY 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
HabroichthyidaePBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At least 7.4 million years on record.

The record covers at least 244.4 Mya to 237 Mya. No occurrence read is dated outside 247 Mya to 233.6 Mya.

Early Triassic — about 0 of 28 occurrencesMiddle Triassic — about 27 of 28 occurrencesMiddle TriassicLate Triassic — about 1 of 28 occurrencesLate Triassic247–247 Mya — about 0.2 occurrences247–246 Mya — about 0.2 occurrences246–246 Mya — about 0.2 occurrences246–245 Mya — about 0.2 occurrences245–245 Mya — about 0.2 occurrences245–244 Mya — about 2 occurrences244–244 Mya — about 4 occurrences244–243 Mya — about 3 occurrences243–243 Mya — about 2 occurrences243–242 Mya — about 2 occurrences242–242 Mya — about 2 occurrences242–241 Mya — about 2 occurrences241–241 Mya — about 1 occurrence241–240 Mya — about 1 occurrence240–240 Mya — about 1 occurrence240–239 Mya — about 1 occurrence239–239 Mya — about 0.6 occurrences239–238 Mya — about 0.6 occurrences238–238 Mya — about 0.6 occurrences238–237 Mya — about 0.6 occurrences237–237 Mya — about 0.5 occurrences237–236 Mya — about 0.1 occurrences236–236 Mya — about 0.1 occurrences236–236 Mya — about 0.1 occurrences236–235 Mya — about 0.1 occurrences235–235 Mya — about 0.1 occurrences235–234 Mya — about 0.1 occurrences234–234 Mya — about 0.1 occurrences244.4 Mya237 Mya247.5 Mya233.1 Mya

28 occurrences of Habroichthys 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

28 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

11 formations

Besano — 45.91°N, 8.95°EBesano — 45.90°N, 8.96°EStrelovec — 46.33°N, 14.59°EStrelovec — 46.39°N, 14.60°EStrelovec — 46.37°N, 14.66°EProsanto — 46.70°N, 9.84°EProsanto — 46.77°N, 9.75°EBesano — 45.89°N, 8.90°ESciliar — 46.35°N, 12.02°EReingrabener Schiefer — 47.88°N, 15.07°EPerledo-Varenna — 46.02°N, 9.30°EDont — 46.74°N, 12.12°EGuanling — 24.78°N, 104.33°ECunardo — 45.93°N, 8.69°ELower Serla Dolomite — 46.32°N, 14.72°E

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

Habroichthys and its relatives

Middle Triassic

Where Habroichthys and its relatives were recorded in the Middle Triassic.

Found in the same rock

145 taxa

The Paleobiology Database records 19 sites for Habroichthys, 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

9 references

Each of the 28 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 content1

Picture of Habroichthys

Credit
Conedera, D.; Hitij, T.; Monari, S.; Gatto, R.; Andreetti, M.; Tintori, A.
Licence
CC BY 4.0
Commercial use
the licence allows 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 itHabroichthyidae through timeFormations of the Middle TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Brough 1939