Lichas

Lichas is a genus of lichid trilobites from Ordovician-Devonian-aged marine strata of Europe and Morocco.

Lichas

Apokryltaros · CC BY-SA 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
LichiniPBDB
Diet
carnivorePBDB, for Lichida
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Lichidae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 64 million years on record.

The record covers at least 464.3 Mya to 399.5 Mya. No occurrence read is dated outside 469.1 Mya to 393.47 Mya.

Ordovician — about 40 of 64 occurrencesOrdovicianSilurian — about 23 of 64 occurrencesSilurianDevonian — about 1 of 64 occurrencesDevonian471–468 Mya — about 0.5 occurrences468–465 Mya — about 1 occurrence465–463 Mya — about 0.4 occurrences460–458 Mya — about 0.3 occurrences458–455 Mya — about 1 occurrence455–452 Mya — about 4 occurrences452–450 Mya — about 5 occurrences450–447 Mya — about 9 occurrences447–444 Mya — about 12 occurrences444–442 Mya — about 13 occurrences442–439 Mya — about 6 occurrences439–437 Mya — about 0.9 occurrences437–434 Mya — about 0.8 occurrences434–431 Mya — about 2 occurrences431–429 Mya — about 2 occurrences429–426 Mya — about 2 occurrences426–423 Mya — about 3 occurrences423–421 Mya — about 1.0 occurrences421–418 Mya — about 0.1 occurrences400–397 Mya — about 0.4 occurrences397–395 Mya — about 0.4 occurrences395–392 Mya — about 0.2 occurrences464.3 Mya399.5 Mya471 Mya392 Mya

64 occurrences of Lichas on record, most of them in the Ordovician. 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

64 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

27 formations

Becscie — 49.82°N, 64.35°WBecscie — 49.42°N, 62.25°WBecscie — 49.40°N, 62.43°WBecscie — 49.80°N, 64.42°WBecscie — 49.74°N, 63.90°WBecscie — 49.38°N, 62.46°WBoda Limestone — 60.97°N, 15.15°EBoda Limestone — 61.17°N, 14.71°EBoda Limestone — 61.05°N, 15.20°ELoka — 58.57°N, 15.07°ELoka — 58.19°N, 13.53°ELipeon — 24.00°S, 65.00°WLipeon — 24.50°S, 65.10°WWaldron Shale — 39.00°N, 86.00°WUpper Ktaoua — 31.08°N, 5.25°WUpper Ktaoua — 30.77°N, 5.66°WCystoid Limestone — 41.15°N, 1.18°WCystoid Limestone — 41.17°N, 1.15°WLoka Fm — 58.17°N, 13.53°EHolen — 57.32°N, 17.00°EHolen — 57.15°N, 16.92°EFukata — 33.53°N, 133.22°EFosses — 50.40°N, 4.72°EFosses — 50.36°N, 4.60°EKunlein — 22.93°N, 97.30°ELi-Lu — 22.55°N, 96.95°ELi-Lu — 22.94°N, 97.35°EMosalem — 42.42°N, 90.43°WGulang — 38.00°N, 102.00°ERacine Dolomite — 41.57°N, 87.60°WLambertenghi — 46.50°N, 13.00°EHaverford — 51.80°N, 4.98°WKullsberg — 60.92°N, 15.10°EKeisley — 54.62°N, 2.45°WKalvsjø — 60.76°N, 10.69°EChedao — 36.08°N, 106.75°EViluciai — 55.55°N, 24.10°EFerradosa — 40.31°N, 8.33°W

Loading coastlines…

The named rock units Lichas has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 further formations hold fewer occurrences each and are not listed. 5 occurrences have no formation on record, which is common for older literature.

Lichas and its relatives

Ordovician

Where Lichas and its relatives were recorded in the Ordovician.

Found in the same rock

969 taxa

The Paleobiology Database records 59 sites for Lichas, 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

30 references

Each of the 64 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. 18 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 content1

Picture of Lichas

Credit
Apokryltaros
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Lichas 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 itLichini through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Dalman 1827