Lichida

Lichida is an order of typically spiny trilobite that lived from the Furongian to the Devonian period. These trilobites usually have 8–13 thoracic segments. Their exoskeletons often have a grainy texture or have wart or spine-like tubercles. Some species are extraordinarily spiny, having spiny thoracic segments that are as long or longer than the entire body, from cephalon (head) to pygidium (tail). The sections of the pygidia are leaf-like in shape and also typically end in spines.

Lichida

Apokryltaros at English Wikipedia · CC BY 2.5 · 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
TrilobitaPBDB
Diet
carnivorePBDB
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Environment
marinePBDB, for Trilobita

Time the record covers

At least 118 million years on record.

The record covers at least 504.5 Mya to 385.9 Mya. No occurrence read is dated outside 506.5 Mya to 382.31 Mya.

Cambrian — about 502 of 1599 occurrencesCambrianOrdovician — about 597 of 1599 occurrencesOrdovicianSilurian — about 352 of 1599 occurrencesSilurianDevonian — about 148 of 1599 occurrencesDevonian509–505 Mya — about 3 occurrences505–500 Mya — about 29 occurrences500–496 Mya — about 419 occurrences496–492 Mya — about 37 occurrences492–487 Mya — about 12 occurrences487–483 Mya — about 4 occurrences483–479 Mya — about 3 occurrences479–475 Mya — about 3 occurrences475–470 Mya — about 18 occurrences470–466 Mya — about 60 occurrences466–462 Mya — about 46 occurrences462–457 Mya — about 82 occurrences457–453 Mya — about 128 occurrences453–449 Mya — about 135 occurrences449–444 Mya — about 96 occurrences444–440 Mya — about 69 occurrences440–436 Mya — about 57 occurrences436–431 Mya — about 79 occurrences431–427 Mya — about 120 occurrences427–423 Mya — about 46 occurrences423–419 Mya — about 6 occurrences419–414 Mya — about 6 occurrences414–410 Mya — about 46 occurrences410–406 Mya — about 11 occurrences406–401 Mya — about 11 occurrences401–397 Mya — about 11 occurrences397–393 Mya — about 15 occurrences393–388 Mya — about 35 occurrences388–384 Mya — about 9 occurrences384–380 Mya — about 2 occurrences504.5 Mya385.9 Mya509 Mya380 Mya

1,599 occurrences of Lichida 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

1,599 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

340 formations

Huaqiao — 28.39°N, 109.53°EHuaqiao — 28.72°N, 109.97°EHuaqiao — 28.05°N, 109.42°EHuaqiao — 29.10°N, 110.92°EKushan — 41.35°N, 123.73°EKushan — 35.73°N, 117.77°EKushan — 34.63°N, 112.97°EKushan — 35.42°N, 114.05°EKushan — 39.75°N, 118.32°EKushan — 39.67°N, 111.92°EKushan — 39.48°N, 112.18°EKushan — 41.25°N, 124.35°EKushan — 41.35°N, 123.75°EKushan — 41.23°N, 123.32°EKushan — 36.50°N, 116.85°EKushan — 34.42°N, 117.43°EKushan — 36.90°N, 111.13°EKushan — 34.17°N, 112.80°EKushan — 39.92°N, 111.68°EKushan — 39.63°N, 107.00°EKushan — 36.30°N, 118.41°EZhumabai — 43.53°N, 69.95°ECape Phillips — 75.13°N, 95.00°WCape Phillips — 75.40°N, 95.80°WCape Phillips — 75.80°N, 94.50°WCape Phillips — 75.57°N, 94.28°WDelorme — 63.28°N, 128.54°WDelorme — 62.77°N, 125.25°WDelorme — 62.38°N, 127.00°WBoda Limestone — 60.97°N, 15.15°EBoda Limestone — 61.17°N, 14.71°EBoda Limestone — 61.05°N, 15.20°EBoda Limestone — 61.15°N, 15.12°EBoda Limestone — 61.12°N, 15.16°EBoda Limestone — 61.20°N, 14.97°EBoda Limestone — 61.13°N, 16.63°ESesong — 37.17°N, 128.78°ESesong — 37.07°N, 129.15°EJupiter — 49.47°N, 63.62°WJupiter — 49.47°N, 63.12°WJupiter — 49.38°N, 63.51°WJupiter — 49.56°N, 63.35°WJupiter — 49.35°N, 63.25°WJupiter — 49.25°N, 62.29°WJupiter — 49.25°N, 62.29°WJupiter — 49.20°N, 62.22°WJupiter — 49.12°N, 62.22°WJupiter — 49.24°N, 62.39°WJupiter — 49.14°N, 62.34°WJupiter — 49.23°N, 62.60°WJupiter — 49.43°N, 63.12°WJupiter — 49.15°N, 62.54°WMotol — 49.95°N, 12.93°EMotol — 50.00°N, 17.78°EMotol — 49.95°N, 14.22°EMotol — 50.05°N, 14.37°EMotol — 50.03°N, 14.32°EMotol — 49.97°N, 14.13°EMotol — 49.77°N, 13.25°EMotol — 50.08°N, 14.47°EEsbataottine — 62.00°N, 127.00°WEsbataottine — 61.72°N, 125.93°WEsbataottine — 61.63°N, 125.73°WEsbataottine — 62.52°N, 124.78°WEsbataottine — 61.63°N, 125.75°WHolen — 57.23°N, 16.96°EHolen — 57.37°N, 17.08°EHolen — 57.32°N, 17.00°EHolen — 57.15°N, 16.92°EHolen — 57.03°N, 16.88°EHolen — 57.00°N, 16.82°EHolen — 57.17°N, 16.94°EHolen — 56.62°N, 16.56°EWhittaker — 62.00°N, 127.00°WWhittaker — 61.52°N, 124.87°WWhittaker — 62.47°N, 124.85°WWhittaker — 63.28°N, 125.35°WWhittaker — 61.48°N, 125.05°WWhittaker — 62.46°N, 124.88°WWhittaker — 62.38°N, 127.00°WWhittaker — 63.22°N, 126.33°WRacine Dolomite — 41.67°N, 88.00°WRacine Dolomite — 43.00°N, 88.00°WRacine Dolomite — 38.97°N, 90.43°WRacine Dolomite — 41.12°N, 88.02°WRacine Dolomite — 42.72°N, 87.78°WRacine Dolomite — 41.57°N, 87.60°WGarra — 32.58°S, 148.95°EBalclatchie — 55.22°N, 4.85°WBalclatchie — 54.84°N, 4.05°WBalclatchie — 55.31°N, 4.80°WVolkhov — 59.97°N, 32.57°EEdinburg — 36.88°N, 81.68°WEdinburg — 37.74°N, 79.51°WEdinburg — 39.00°N, 78.38°WCampile — 53.44°N, 7.23°WCampile — 53.22°N, 7.93°WCampile — 53.45°N, 7.17°WCampile — 52.36°N, 6.80°WCrown Point — 44.61°N, 73.42°WCrown Point — 44.84°N, 73.35°WCrown Point — 44.58°N, 73.53°WCrown Point — 44.88°N, 73.44°WCrown Point — 44.94°N, 73.45°WBecscie — 49.82°N, 64.35°WBecscie — 49.42°N, 62.25°WBecscie — 49.40°N, 62.43°WBecscie — 49.80°N, 64.42°WBecscie — 49.61°N, 63.45°WBecscie — 49.74°N, 63.90°WBecscie — 49.38°N, 62.46°WValcour — 44.87°N, 73.41°WValcour — 44.62°N, 73.41°WValcour — 44.30°N, 73.31°WKullsberg — 61.05°N, 15.20°EKullsberg — 60.92°N, 15.10°EMulloch Hill — 55.28°N, 4.74°WRacine — 42.73°N, 87.78°WRacine — 42.88°N, 88.04°WRacine — 43.05°N, 88.01°WRacine — 41.85°N, 87.65°W

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The named rock units Lichida has been recovered from, largest first. Drawn where the rock is now, not where it formed. 316 further formations hold fewer occurrences each and are not listed. 87 occurrences have no formation on record, which is common for older literature.

Lichida and its relatives

Ordovician

Where Lichida and its relatives were recorded in the Ordovician.

Found in the same rock

3,028 taxa

The Paleobiology Database records 829 sites for Lichida, and this reads 240 of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

344 references

Each of the 1,599 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. 332 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 content2

Picture of Lichida

Credit
Apokryltaros at English Wikipedia
Licence
CC BY 2.5
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 itTrilobita through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Moore 1959