Strepsodus

Strepsodus is a genus of rhizodont lobe-finned fish that lived throughout the Carboniferous period. Fossils have been found in eastern Canada, Britain, and Queensland, Australia; indeterminate species of Strepsodus have also been found in the late Devonian deposits of Turkey, Iran and Colombia. A large individual is measured up to 3.5 metres (11.5 ft) long.

Strepsodus

the paleobear from Lontananza, Loreto, Peru · CC BY 2.0 · 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
RhizodontidaePBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At least 24 million years on record.

The record covers at least 339.9 Mya to 315.2 Mya. No occurrence read is dated outside 346.7 Mya to 298.9 Mya.

Carboniferous — about 19 of 19 occurrencesCarboniferousPermian — about 0 of 19 occurrences348–346 Mya — about 0.1 occurrences346–344 Mya — about 0.2 occurrences344–343 Mya — about 0.2 occurrences343–341 Mya — about 0.2 occurrences341–339 Mya — about 0.2 occurrences328–326 Mya — about 0.7 occurrences326–324 Mya — about 2 occurrences324–323 Mya — about 0.9 occurrences323–321 Mya — about 0.3 occurrences321–319 Mya — about 0.3 occurrences319–318 Mya — about 1 occurrence318–316 Mya — about 1 occurrence316–315 Mya — about 1 occurrence315–313 Mya — about 2 occurrences313–311 Mya — about 2 occurrences311–310 Mya — about 2 occurrences310–308 Mya — about 2 occurrences308–306 Mya — about 1 occurrence306–305 Mya — about 0.1 occurrences305–303 Mya — about 0.1 occurrences303–301 Mya — about 0.1 occurrences301–300 Mya — about 0.1 occurrences300–298 Mya — about 0.0 occurrences339.9 Mya315.2 Mya347.7 Mya297.9 Mya

19 occurrences of Strepsodus on record, most of them in the Carboniferous. 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

19 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

4 formations

Heath — 46.95°N, 108.90°WHeath — 46.95°N, 108.96°WPennine Lower Coal Measures — 53.13°N, 3.09°WPennine Lower Coal Measures — 53.11°N, 3.03°WBluefield — 39.57°N, 79.85°WGlencartholm Volcanic Beds — 55.20°N, 3.07°W

Loading coastlines…

The named rock units Strepsodus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 13 occurrences have no formation on record, which is common for older literature.

Strepsodus and its relatives

Carboniferous

Where Strepsodus and its relatives were recorded in the Carboniferous.

Found in the same rock

96 taxa

The Paleobiology Database records 17 sites for Strepsodus, 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

6 references

Each of the 19 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 Strepsodus

Credit
the paleobear from Lontananza, Loreto, Peru
Licence
CC BY 2.0
Commercial use
the licence allows it

No 3D scan of Strepsodus was found in Smithsonian Open Access and Sketchfab.

MorphoSource 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 itRhizodontidae through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Huxley and Etheridge 1865