Ischnacanthus

Ischnacanthus is an extinct genus of acanthodian jawed fish. It lived from the Pridoli to the Lochkovian. The type species I. gracilis is only known from Lochkovian.

Ischnacanthus

SeismicShrimp · 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
IschnacanthidaePBDB
Diet
carnivorePBDB, for Acanthodii
Life habit
nektonicPBDB, for Acanthodii
Motility
actively mobilePBDB, for Acanthodii

Time the record covers

At least 12 million years on record.

The record covers at least 422.7 Mya to 410.62 Mya. No occurrence read is dated outside 425 Mya to 393.47 Mya.

Silurian — about 2 of 9 occurrencesSilurianDevonian — about 7 of 9 occurrencesDevonian426–425 Mya — about 0.4 occurrences425–423 Mya — about 0.9 occurrences423–422 Mya — about 0.6 occurrences420–419 Mya — about 0.4 occurrences419–418 Mya — about 0.9 occurrences418–417 Mya — about 0.9 occurrences417–416 Mya — about 0.9 occurrences416–415 Mya — about 0.9 occurrences415–414 Mya — about 0.9 occurrences414–413 Mya — about 0.5 occurrences413–411 Mya — about 0.0 occurrences411–410 Mya — about 0.1 occurrences410–409 Mya — about 0.1 occurrences409–408 Mya — about 0.1 occurrences408–407 Mya — about 0.1 occurrences407–406 Mya — about 0.1 occurrences406–405 Mya — about 0.1 occurrences405–404 Mya — about 0.1 occurrences404–403 Mya — about 0.1 occurrences403–402 Mya — about 0.1 occurrences402–400 Mya — about 0.1 occurrences400–399 Mya — about 0.1 occurrences399–398 Mya — about 0.1 occurrences398–397 Mya — about 0.1 occurrences397–396 Mya — about 0.1 occurrences396–395 Mya — about 0.1 occurrences395–394 Mya — about 0.1 occurrences394–393 Mya — about 0.0 occurrences422.7 Mya410.62 Mya425.6 Mya392.8 Mya

9 occurrences of Ischnacanthus 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

9 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

5 formations

Dundee Flagstone — 57.00°N, 4.00°WDundee Flagstone — 56.48°N, 3.12°WDundee Flagstone — 56.67°N, 2.77°WOverton — 52.48°N, 2.63°WSnowblind — 75.07°N, 93.57°WWater Canyon — 41.98°N, 111.09°WDundee — 56.77°N, 2.48°W

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The named rock units Ischnacanthus 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.

Ischnacanthus and its relatives

Devonian

Where Ischnacanthus and its relatives were recorded in the Devonian.

Found in the same rock

73 taxa

The Paleobiology Database records 9 sites for Ischnacanthus, 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

5 references

Each of the 9 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 content2

Picture of Ischnacanthus

Credit
SeismicShrimp
Licence
CC BY 4.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
Free Standard
Commercial use
cannot be read from the licence given — check the record

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 itIschnacanthidae through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Powrie 1864