Rhadinacanthus longispinus

Kleesment · CC BY-NC 4.0 · via GBIF. 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
- RhadinacanthusPBDB
- Diet
- carnivorePBDB, for Acanthodii
- Life habit
- nektonicPBDB, for Acanthodii
- Motility
- actively mobilePBDB, for Acanthodii
Time the record covers
At most 12 million years on record.
Every occurrence read is dated to somewhere between 393.47 Mya and 382.31 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
7 occurrences of Rhadinacanthus longispinus on record, most of them in the Devonian. 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
7 occurrences- Devonian100%
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
3 formations
- Lybster flagstone Formation · Caithness flagstone Group3
- Upper Stromness Flagstones Formation1
- Mey Flagstone Formation · Upper Caithness Flagstone Group1
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The named rock units Rhadinacanthus longispinus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Rhadinacanthus longispinus and its relatives
DevonianWhere Rhadinacanthus longispinus and its relatives were recorded in the Devonian.
Found in the same rock
47 taxa- Cheirolepis trailli4 sites
- Coccosteus cuspidatus4 sites
- Diplacanthus crassisimus4 sites
- Cheiracanthus murchisoni3 sites
- Homosteus milleri3 sites
- Osteolepis macrolepidotus3 sites
- Pterichthyodes milleri3 sites
- Diplacanthus striatus2 sites
- Diplacanthus tenuistriatus2 sites
- Dipterus valenciennesi2 sites
- Glyptolepis leptopterus2 sites
- Palaeospondylus gunni2 sites
- Acanthodii1 site
- Achanarella trewini1 site
- Acinosporites acanthomammillatus1 site
- Ancyrospora grandispinosa1 site
- Apiculatisporis1 site
- Auroaspora aurora1 site
- Auroraspora macromanifestus1 site
- Auroraspora micromanifestus1 site
- Calamospora1 site
- Calyptosporites microspinosus1 site
- Calyptosporites velatus1 site
- Cheiracanthus latus1 site
The Paleobiology Database records 7 sites for Rhadinacanthus longispinus, 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
3 references- The diplacanthid fishes (Acanthodii, Diplacanthiformes, Diplacanthidae) from the Middle Devonian of Scotland5
- Mid Devonian fossil fishes sites of Scotland1
- Fossil Fishes of Great Britain1
Each of the 7 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 the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Rhadinacanthus longispinus
- Source
- GBIF
- Credit
- Kleesment
- Licence
- CC BY-NC 4.0
- Commercial use
- the licence does not allow it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itRhadinacanthus through timeFormations of the DevonianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Agassiz 1844