Stethacanthus
Stethacanthus is an extinct genus of shark-like cartilaginous fish which lived from the Late Devonian to Late Carboniferous epoch, dying out around 298.9 million years ago. Fossils have been found in Australia, Asia, Europe and North America.

Montanoceratops · CC0 · 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
- SymmoriidaePBDB
- Diet
- carnivorePBDB, for Symmoriiformes
- Life habit
- nektonicPBDB, for Symmoriiformes
- Motility
- actively mobilePBDB, for Symmoriiformes
Time the record covers
At least 94 million years on record.
The record covers at least 358.86 Mya to 264.28 Mya. No occurrence read is dated outside 382.31 Mya to 259.857 Mya.
37 occurrences of Stethacanthus 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
37 occurrences- Devonian14%
- Carboniferous54%
- Permian32%
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
17 formations
- Ohio shale Formation4
- Bell Canyon Formation4
- Jingyuan Formation2
- Linton Formation2
- Onaga Formation2
- Cherry Canyon Formation2
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The named rock units Stethacanthus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 occurrences have no formation on record, which is common for older literature.
Stethacanthus and its relatives
CarboniferousWhere Stethacanthus and its relatives were recorded in the Carboniferous.
Found in the same rock
98 taxa- Euselachii7 sites
- Symmoriiformes7 sites
- Heslerodus divergens6 sites
- Stethacanthulus meccaensis6 sites
- Glikmanius occidentalis5 sites
- Actinopteri4 sites
- Actinopterygii3 sites
- Bransonella lingulata3 sites
- Glikmanius myachkovensis3 sites
- Osteichthyes3 sites
- Adamantina benedictae2 sites
- Chondrichthyes2 sites
- Cladodontomorphi2 sites
- Cooleyella amazonensis2 sites
- Denaea2 sites
- Iniopera richardsoni2 sites
- Orodus micropterygius2 sites
- Peripristis semicircularis2 sites
- Promexyele peyeri2 sites
- Sphenacanthus2 sites
- Stethacanthulus2 sites
- Stethacanthulus decorus2 sites
- Symmoriiform indet.2 sites
- Varialepis2 sites
The Paleobiology Database records 34 sites for Stethacanthus, 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
15 references- The "Cladodont level" sharks of the Pennsylvanian black shales of central North America11
- Fish assemblage from the Capitanian (Middle Permian) of the Apache Mountains, west Texas, USA4
- Permian chondrichthyans from the Guadalupe Mountains National Park of West Texas (USA)3
- Permian chondrichthyans of the Kanin Peninsula, Russia3
- Carboniferous fishes from the central western States3
- Symmoriiform sharks from the Pennsylvanian of Nebraska2
- Early Carboniferous Fishes (Acanthodian, Actinopterygians, and Chondrichthyes) from the East Sector of North Qilian Mountain, China2
- Late Devonian - Early Permian chondrichthyans of the Russian Arctic2
- Late Pennsylvanian fishes from the Finis Shales of North-Central Texas (USA)1
- The fish assemblage from the Pennsylvanian Buckhorn Asphalt Quarry Lagerstätte (Oklahoma, USA)1
- Pennsylvanian fishes from the Sandia Formation, Socorro County, New Mexico1
- A new specimen of Helicoprion Karpinsky, 1899 from Kazakhstanian Cisurals and a new reconstruction of its tooth whorl position and function1
Each of the 37 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. 3 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 content2
Picture of Stethacanthus
- Source
- Wikipedia/Commons
- Credit
- Montanoceratops
- Licence
- CC0
- Commercial use
- the licence allows it
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 itSymmoriidae through timeFormations of the CarboniferousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Newberry 1889