Laccognathus

Laccognathus is an extinct genus of amphibious lobe-finned fish from Europe and North America. They existed from the Middle Devonian to the Late Devonian. The name comes from Greek for 'pitted jaw'.

Laccognathus

Obsidian Soul Background from File:Sea floor, sea depth.jpg , by Dimitris Siskopoulos · CC BY-SA 3.0 · 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
HoloptychiidaePBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At least 1 million years on record.

The record covers at least 383.4 Mya to 382.31 Mya. No occurrence read is dated outside 387.95 Mya to 372.15 Mya.

Devonian — about 8 of 8 occurrencesDevonian388–388 Mya — about 0.0 occurrences388–387 Mya — about 0.0 occurrences387–387 Mya — about 0.0 occurrences387–386 Mya — about 0.0 occurrences386–386 Mya — about 0.1 occurrences386–385 Mya — about 0.3 occurrences385–385 Mya — about 0.3 occurrences385–384 Mya — about 0.3 occurrences384–383 Mya — about 0.3 occurrences383–383 Mya — about 2 occurrences383–382 Mya — about 2 occurrences382–382 Mya — about 0.5 occurrences382–381 Mya — about 0.5 occurrences381–381 Mya — about 0.5 occurrences381–380 Mya — about 0.5 occurrences380–379 Mya — about 0.5 occurrences379–379 Mya — about 0.5 occurrences379–378 Mya — about 0.0 occurrences378–378 Mya — about 0.0 occurrences378–377 Mya — about 0.0 occurrences377–377 Mya — about 0.0 occurrences377–376 Mya — about 0.0 occurrences376–376 Mya — about 0.0 occurrences376–375 Mya — about 0.0 occurrences375–374 Mya — about 0.0 occurrences374–374 Mya — about 0.0 occurrences374–373 Mya — about 0.0 occurrences373–373 Mya — about 0.0 occurrences373–372 Mya — about 0.0 occurrences372–372 Mya — about 0.0 occurrences383.4 Mya – 382.31 Mya388.4 Mya371.6 Mya

8 occurrences of Laccognathus 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

8 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

Gauja — 58.01°N, 25.38°EBurtnieki — 58.10°N, 25.55°EPolotsk — 52.88°N, 26.86°EFram — 77.17°N, 86.27°WTsilemskaya — 65.51°N, 49.34°EYam-Tesovo — 58.89°N, 30.56°E

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The named rock units Laccognathus 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.

Laccognathus and its relatives

Devonian

Where Laccognathus and its relatives were recorded in the Devonian.

Found in the same rock

85 taxa

The Paleobiology Database records 7 sites for Laccognathus, 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 8 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 Laccognathus

Credit
Obsidian Soul Background from File:Sea floor, sea depth.jpg , by Dimitris Siskopoulos
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

Photogrammetry

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Laccognathus embryi · CMN:NUFV:656

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 itHoloptychiidae through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Gross 1941