Agkistracanthus

Agkistracanthus is an extinct genus of holocephalan cartilaginous fish from the Mesozoic era. It currently contains a single species, A. mitgelensis. It is known from the Rhaetian to Hettangian epochs, spanning the transition from the Triassic to Jurassic period. Fossils from this genus are known from Switzerland, Austria, and Britain. It is known mostly from isolated and fragmentary material, including fin spines as well as palatine, symphyseal, and mandibular structures.

No picture of Agkistracanthus was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Agkistracanthus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
MyriacanthidaePBDB
Diet
carnivorePBDB, for Chimaeriformes
Life habit
nektobenthicPBDB, for Chimaeriformes
Motility
actively mobilePBDB, for Chimaeriformes

Time the record covers

At most 6.2 million years on record.

Every occurrence read is dated to somewhere between 205.7 Mya and 199.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Triassic — about 10 of 13 occurrencesLate TriassicEarly Jurassic — about 3 of 13 occurrencesEarly Jurassic206–205 Mya — about 0.5 occurrences205–205 Mya — about 0.6 occurrences205–205 Mya — about 0.6 occurrences205–205 Mya — about 0.6 occurrences205–205 Mya — about 0.6 occurrences205–204 Mya — about 0.6 occurrences204–204 Mya — about 0.6 occurrences204–204 Mya — about 0.6 occurrences204–204 Mya — about 0.6 occurrences204–203 Mya — about 0.6 occurrences203–203 Mya — about 0.6 occurrences203–203 Mya — about 0.6 occurrences203–203 Mya — about 0.6 occurrences203–202 Mya — about 0.6 occurrences202–202 Mya — about 0.6 occurrences202–202 Mya — about 0.6 occurrences202–202 Mya — about 0.6 occurrences202–201 Mya — about 0.6 occurrences201–201 Mya — about 0.4 occurrences201–201 Mya — about 0.4 occurrences201–201 Mya — about 0.4 occurrences201–200 Mya — about 0.4 occurrences200–200 Mya — about 0.4 occurrences200–200 Mya — about 0.4 occurrences200–200 Mya — about 0.4 occurrences200–199 Mya — about 0.3 occurrences206.2 Mya199 Mya

13 occurrences of Agkistracanthus on record, most of them in the Late 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

13 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

6 formations

Kössen — 46.64°N, 9.64°EKössen — 46.62°N, 9.68°EKössen — 46.60°N, 9.82°EKössen — 46.77°N, 9.68°EKössen — 46.75°N, 9.61°EKössen — 46.65°N, 10.14°EKössen — 47.06°N, 9.71°EAdnet — 47.06°N, 9.69°EAllgäu — 47.06°N, 9.72°EAllgäu — 46.60°N, 10.05°ELilstock — 51.18°N, 3.27°W

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The named rock units Agkistracanthus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Agkistracanthus and its relatives

Late Triassic

Where Agkistracanthus and its relatives were recorded in the Late Triassic.

Found in the same rock

32 taxa

The Paleobiology Database records 13 sites for Agkistracanthus, 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

2 references

Each of the 13 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 content0

No picture of Agkistracanthus was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Agkistracanthus, or no answer at all. This entry cannot say which.

No 3D scan of Agkistracanthus 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 itMyriacanthidae through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Duffin and Furrer 1981