Redlichiida

Redlichiida is an order of trilobites, a group of extinct marine arthropods. Species assigned to the order Redlichiida are among the first trilobites to appear in the fossil record, about halfway during the Lower Cambrian. Due to the difficulty to relate sediments in different areas, there remains some discussion, but among the earliest are Fallotaspis, and Lemdadella, both belonging to this order. The first representatives of the orders Corynexochida and Ptychopariida also appear very early on and may prove to be even earlier than any redlichiid species. In terms of anatomical comparison, the earliest redlichiid species are probably ancestral to all other trilobite orders and share many primitive characters. The last redlichiid trilobites died out before the end of the Middle Cambrian.

Redlichiida

氏子 · 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
TrilobitaPBDB
Diet
deposit feederPBDB
Life habit
low-level epifaunalPBDB
Motility
fast-movingPBDB
Environment
marinePBDB, for Trilobita

Time the record covers

At least 34 million years on record.

The record covers at least 521 Mya to 486.4 Mya. No occurrence read is dated outside 538.8 Mya to 477.1 Mya.

Cambrian — about 2530 of 2533 occurrencesCambrianOrdovician — about 3 of 2533 occurrencesOrdovician540–538 Mya — about 6 occurrences538–536 Mya — about 13 occurrences536–534 Mya — about 13 occurrences534–531 Mya — about 13 occurrences531–529 Mya — about 14 occurrences529–527 Mya — about 14 occurrences527–525 Mya — about 15 occurrences525–523 Mya — about 16 occurrences523–521 Mya — about 39 occurrences521–519 Mya — about 281 occurrences519–517 Mya — about 306 occurrences517–514 Mya — about 360 occurrences514–512 Mya — about 408 occurrences512–510 Mya — about 324 occurrences510–508 Mya — about 189 occurrences508–506 Mya — about 165 occurrences506–504 Mya — about 108 occurrences504–502 Mya — about 99 occurrences502–499 Mya — about 90 occurrences499–497 Mya — about 44 occurrences497–495 Mya — about 6 occurrences495–493 Mya — about 1 occurrence493–491 Mya — about 1 occurrence491–489 Mya — about 2 occurrences489–487 Mya — about 2 occurrences487–484 Mya — about 1 occurrence484–482 Mya — about 0.7 occurrences482–480 Mya — about 0.4 occurrences480–478 Mya — about 0.4 occurrences478–476 Mya — about 0.2 occurrences521 Mya486.4 Mya540 Mya476 Mya

2,533 occurrences of Redlichiida on record, most of them in the Cambrian. 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

2,533 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

239 formations

Carrara — 35.85°N, 116.23°WCarrara — 37.35°N, 116.13°WCarrara — 37.45°N, 115.73°WCarrara — 36.67°N, 116.32°WCarrara — 36.75°N, 117.07°WCarrara — 36.47°N, 116.75°WCarrara — 36.48°N, 116.73°WCarrara — 36.38°N, 116.60°WCarrara — 36.20°N, 116.35°WCarrara — 36.08°N, 116.23°WCarrara — 36.15°N, 116.97°WCarrara — 36.23°N, 116.98°WCarrara — 36.43°N, 116.98°WCarrara — 35.88°N, 116.16°WCarrara — 35.88°N, 116.06°WCarrara — 35.95°N, 116.31°WJbel Wawrmast — 32.00°N, 6.00°WJbel Wawrmast — 31.21°N, 7.88°WJbel Wawrmast — 31.29°N, 4.98°WJbel Wawrmast — 31.39°N, 5.02°WJbel Wawrmast — 31.52°N, 5.02°WJbel Wawrmast — 31.29°N, 5.50°WCampito — 37.69°N, 117.73°WCampito — 37.53°N, 117.53°WCampito — 37.73°N, 117.35°WCampito — 37.35°N, 117.23°WCampito — 37.77°N, 117.42°WCampito — 37.47°N, 117.45°WCampito — 38.02°N, 118.18°WCampito — 37.02°N, 117.96°WCampito — 37.86°N, 117.87°WCampito — 36.91°N, 118.06°WCampito — 37.24°N, 118.16°WCampito — 37.30°N, 118.15°WCampito — 37.42°N, 118.19°WCampito — 37.01°N, 117.93°WCampito — 37.50°N, 118.30°WCampito — 37.27°N, 118.09°WSekwi — 59.27°N, 129.18°WSekwi — 63.52°N, 128.68°WSekwi — 63.52°N, 128.17°WSekwi — 63.44°N, 129.37°WSekwi — 63.37°N, 129.13°WSekwi — 63.55°N, 129.20°WSekwi — 63.62°N, 128.63°WSekwi — 63.33°N, 130.48°WJince — 49.78°N, 13.97°EJince — 49.00°N, 14.00°EJince — 49.96°N, 13.74°EPoleta — 37.79°N, 117.27°WPoleta — 37.87°N, 117.87°WPoleta — 37.32°N, 117.27°WPoleta — 37.72°N, 117.32°WPoleta — 37.38°N, 117.29°WPoleta — 37.81°N, 117.76°WPoleta — 37.49°N, 117.34°WPoleta — 37.50°N, 117.50°WPoleta — 37.86°N, 117.82°WPoleta — 37.28°N, 118.16°WPoleta — 37.73°N, 117.36°WPoleta — 36.79°N, 116.93°WPoleta — 37.26°N, 118.13°WYuanshan — 24.81°N, 102.58°EYuanshan — 24.67°N, 102.65°EYuanshan — 24.84°N, 102.41°EYuanshan — 25.40°N, 103.38°EYuanshan — 25.50°N, 102.40°EYuanshan — 25.68°N, 102.17°EYuanshan — 25.72°N, 103.99°EYuanshan — 24.00°N, 102.00°EYuanshan — 24.72°N, 102.55°EKinzers — 40.04°N, 76.31°WKinzers — 40.04°N, 76.41°WKinzers — 40.00°N, 76.73°WKinzers — 40.44°N, 75.12°WKinzers — 40.05°N, 76.36°WKinzers — 39.98°N, 76.76°WKinzers — 40.12°N, 76.33°WPioche Shale — 36.19°N, 115.01°WPioche Shale — 37.77°N, 114.56°WPioche Shale — 37.61°N, 114.76°WPioche Shale — 37.53°N, 114.73°WPioche Shale — 40.00°N, 115.00°WPioche Shale — 37.62°N, 114.72°WPioche Shale — 37.94°N, 114.50°WPioche — 36.19°N, 115.01°WPioche — 37.80°N, 114.57°WPioche — 40.64°N, 111.69°WAmouslek — 30.40°N, 8.83°WAmouslek — 30.38°N, 8.68°WAmouslek — 29.62°N, 9.47°WAmouslek — 30.18°N, 9.03°WGislov — 55.52°N, 14.35°EGislov — 55.72°N, 13.27°EGislov — 55.68°N, 14.26°ETannenknock — 50.17°N, 11.52°ETannenknock — 50.20°N, 11.56°EIdoudine — 30.40°N, 8.82°WForteau — 51.56°N, 56.75°WForteau — 49.52°N, 57.71°WForteau — 51.46°N, 56.86°WForteau — 51.02°N, 57.00°WForteau — 50.59°N, 57.22°WForteau — 51.02°N, 56.81°WForteau — 50.61°N, 57.14°WForteau — 51.02°N, 56.61°WForteau — 51.07°N, 56.69°WForteau — 50.97°N, 56.44°WForteau — 50.98°N, 56.32°WForteau — 51.53°N, 56.82°WForteau — 51.47°N, 56.97°WForteau — 50.66°N, 57.04°WForteau — 50.65°N, 57.05°WWulongqing — 24.95°N, 102.80°EWulongqing — 25.68°N, 102.17°EWulongqing — 24.78°N, 102.82°EUsa — 56.00°N, 88.00°EUsa — 54.00°N, 90.75°EUsa — 54.23°N, 90.82°EHuanglianba — 27.13°N, 106.82°ELatham — 34.54°N, 115.48°WLatham — 34.58°N, 115.52°WLatham — 34.95°N, 115.58°WLatham — 35.00°N, 115.53°WValdemiedes — 41.17°N, 1.48°WValdemiedes — 41.55°N, 1.67°WYu'anshan — 25.33°N, 103.50°EYu'anshan — 25.55°N, 102.40°EYu'anshan — 24.77°N, 102.58°EMural — 53.03°N, 119.23°WMural — 53.19°N, 119.16°WMural — 53.18°N, 119.13°WMernmerna — 31.19°S, 138.87°EMernmerna — 30.79°S, 139.14°EAjax Limestone — 30.59°S, 138.33°E

Loading coastlines…

The named rock units Redlichiida has been recovered from, largest first. Drawn where the rock is now, not where it formed. 215 further formations hold fewer occurrences each and are not listed. 32 occurrences have no formation on record, which is common for older literature.

Redlichiida and its relatives

Cambrian

Where Redlichiida and its relatives were recorded in the Cambrian.

Found in the same rock

908 taxa

The Paleobiology Database records 860 sites for Redlichiida, and this reads 240 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

313 references

Each of the 2,533 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. 301 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 Redlichiida

Credit
氏子
Licence
CC BY-SA 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

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 itTrilobita through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Richter 1932