Problematica

Problematica

Barrande, Joachim; Frič, Antonín · Public Domain · via Wikidata/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
AnimaliaPBDB

Time the record covers

At least 1797 million years on record.

The record covers at least 1800 Mya to 2.58 Mya. No occurrence read is dated outside 2050 Mya to 1.8 Mya.

Cambrian — about 1409 of 2338 occurrencesOrdovician — about 130 of 2338 occurrencesSilurian — about 3 of 2338 occurrencesDevonian — about 91 of 2338 occurrencesCarboniferous — about 112 of 2338 occurrencesPermian — about 80 of 2338 occurrencesEarly Triassic — about 0 of 2338 occurrencesMiddle Triassic — about 52 of 2338 occurrencesLate Triassic — about 151 of 2338 occurrencesEarly Jurassic — about 6 of 2338 occurrencesMiddle Jurassic — about 0 of 2338 occurrencesLate Jurassic — about 14 of 2338 occurrencesEarly Cretaceous — about 4 of 2338 occurrencesLate Cretaceous — about 2 of 2338 occurrencesPaleocene — about 0 of 2338 occurrencesEocene — about 2 of 2338 occurrencesOligocene — about 2 of 2338 occurrencesMiocene — about 0 of 2338 occurrencesPliocene — about 1 of 2338 occurrencesPleistocene — about 1 of 2338 occurrences2091–2021 Mya — about 4 occurrences2021–1952 Mya — about 9 occurrences1952–1882 Mya — about 9 occurrences1882–1812 Mya — about 9 occurrences1812–1742 Mya — about 6 occurrences1742–1673 Mya — about 5 occurrences1673–1603 Mya — about 5 occurrences1603–1533 Mya — about 0.5 occurrences1533–1464 Mya — about 0.3 occurrences1464–1394 Mya — about 0.3 occurrences1045–976 Mya — about 1 occurrence976–906 Mya — about 4 occurrences906–836 Mya — about 4 occurrences836–767 Mya — about 4 occurrences767–697 Mya — about 4 occurrences697–627 Mya — about 20 occurrences627–558 Mya — about 155 occurrences558–488 Mya — about 1449 occurrences488–418 Mya — about 135 occurrences418–348 Mya — about 94 occurrences348–279 Mya — about 131 occurrences279–209 Mya — about 224 occurrences209–139 Mya — about 57 occurrences139–70 Mya — about 5 occurrences70–0 Mya — about 6 occurrences1800 Mya2.58 Mya2091 Mya0 Mya

2,338 occurrences of Problematica 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

2,338 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

409 formations

Parara — 35.13°S, 137.43°EParara — 34.43°S, 137.90°EParara — 34.70°S, 137.71°EParara — 34.06°S, 138.02°EParara — 34.73°S, 137.63°EParara — 34.80°S, 137.69°EDengying — 33.50°N, 106.00°EDengying — 25.48°N, 103.03°EDengying — 32.50°N, 107.00°EDengying — 33.00°N, 107.92°EDengying — 32.94°N, 107.70°EDengying — 26.63°N, 105.85°EDengying — 28.27°N, 106.30°EDengying — 32.35°N, 106.82°EDengying — 30.73°N, 111.13°EDengying — 30.77°N, 111.12°EDengying — 32.53°N, 107.92°EDengying — 25.52°N, 103.07°EDengying — 24.72°N, 102.56°EDengying — 32.97°N, 106.25°EDengying — 32.97°N, 106.27°EDengying — 33.67°N, 109.46°EParara Limestone — 34.92°S, 137.80°EZhujiaqing — 24.67°N, 102.65°EZhujiaqing — 27.93°N, 103.56°EZhujiaqing — 24.73°N, 102.57°EZhujiaqing — 25.64°N, 103.07°EZhujiaqing — 26.28°N, 103.22°EZhujiaqing — 25.52°N, 103.07°EZhujiaqing — 26.38°N, 103.21°EShabakty — 42.90°N, 71.37°EShabakty — 43.57°N, 69.75°EShabakty — 43.47°N, 69.87°EShabakty — 43.62°N, 69.73°EShabakty — 43.60°N, 69.33°EShabakty — 43.47°N, 69.97°EShabakty — 43.68°N, 69.68°EShabakty — 43.60°N, 69.45°EPestrotsvet — 57.35°N, 131.20°EPestrotsvet — 57.67°N, 131.83°EPestrotsvet — 57.17°N, 132.00°EPestrotsvet — 63.00°N, 123.00°EPestrotsvet — 60.70°N, 124.72°EPestrotsvet — 60.82°N, 125.00°EPestrotsvet — 60.92°N, 125.77°EPestrotsvet — 60.83°N, 125.40°EPestrotsvet — 58.50°N, 129.50°EPestrotsvet — 58.75°N, 128.00°EPestrotsvet — 58.75°N, 127.00°EPestrotsvet — 71.83°N, 107.00°EPestrotsvet — 71.50°N, 105.00°EPestrotsvet — 57.40°N, 132.73°EPestrotsvet — 58.85°N, 130.60°EPestrotsvet — 55.97°N, 126.18°EPestrotsvet — 61.29°N, 135.50°EAjax Limestone — 30.58°S, 138.32°ESecond Abden Shale — 56.07°N, 3.17°WBastion — 74.10°N, 23.00°WBastion — 73.52°N, 24.68°WBastion — 72.85°N, 25.03°WBastion — 74.35°N, 22.77°WXinji — 33.27°N, 112.98°EXinji — 34.53°N, 110.87°EXinji — 34.90°N, 106.85°EWirrealpa Limestone — 31.15°S, 138.93°EWirrealpa Limestone — 31.33°S, 138.87°ERawnsley Quartzite — 30.00°S, 138.00°ERawnsley Quartzite — 31.67°S, 138.80°ERawnsley Quartzite — 30.97°S, 138.18°ERawnsley Quartzite — 30.85°S, 138.13°ERawnsley Quartzite — 31.32°S, 138.50°ERawnsley Quartzite — 30.79°S, 138.14°EKuanchuanpu — 33.00°N, 106.17°EKuanchuanpu — 32.50°N, 106.92°EKuanchuanpu — 32.94°N, 106.23°EKuanchuanpu — 32.32°N, 106.79°EKuanchuanpu — 32.97°N, 106.25°EBurgess Shale — 51.44°N, 116.47°WBurgess Shale — 51.03°N, 115.83°WBurgess Shale — 51.39°N, 116.43°WZhujianqing — 24.73°N, 102.57°EYurtus — 40.52°N, 79.05°EYurtus — 41.15°N, 80.25°EYurtus — 40.83°N, 79.67°EYurtus — 40.88°N, 79.47°ERiley — 30.64°N, 99.26°WRiley — 30.92°N, 98.61°WRiley — 30.81°N, 98.28°WRiley — 30.91°N, 99.00°WRiley — 30.76°N, 99.41°WRiley — 30.54°N, 99.09°WRiley — 30.49°N, 98.52°WAmsden — 41.81°N, 107.30°WAmsden — 41.83°N, 107.24°WAmsden — 41.92°N, 107.34°WAmsden — 43.66°N, 109.60°WAmsden — 43.51°N, 107.46°WAmsden — 44.88°N, 107.35°WAmsden — 44.88°N, 107.39°WAmsden — 42.87°N, 110.79°WOhio Shale — 40.33°N, 83.68°WOhio Shale — 46.10°N, 83.02°WOhio Shale — 41.25°N, 82.70°WOhio Shale — 39.97°N, 83.00°WOhio Shale — 38.60°N, 83.32°WOhio Shale — 37.98°N, 84.18°WOhio Shale — 37.87°N, 83.92°WOhio Shale — 37.68°N, 83.95°WOhio Shale — 37.57°N, 84.30°WOhio Shale — 36.90°N, 82.72°WOhio Shale — 35.10°N, 85.33°WOhio Shale — 35.02°N, 85.02°WOhio Shale — 36.38°N, 95.05°WOhio Shale — 41.90°N, 80.78°WOhio Shale — 41.67°N, 80.95°WOhio Shale — 41.02°N, 81.35°WOhio Shale — 41.03°N, 81.65°WOhio Shale — 40.40°N, 82.03°WOhio Shale — 40.33°N, 82.17°WOhio Shale — 40.15°N, 82.83°WOhio Shale — 34.53°N, 82.40°WOhio Shale — 39.33°N, 82.98°WYuanshan — 24.81°N, 102.58°EYuanshan — 24.84°N, 102.41°EYuanshan — 25.68°N, 102.17°EYuanshan — 25.40°N, 103.38°EYuanshan — 25.72°N, 103.99°EYuanshan — 24.00°N, 102.00°EDoushantuo — 27.07°N, 107.48°EDoushantuo — 33.20°N, 106.46°EAndamooka Limestone — 30.12°S, 137.16°EAndamooka Limestone — 30.12°S, 137.01°EBeshtash — 42.17°N, 72.00°ELechkogel — 47.42°N, 13.07°ELechkogel — 47.43°N, 13.67°ELechkogel — 47.55°N, 14.52°ELechkogel — 47.70°N, 15.53°ELechkogel — 46.77°N, 14.45°ELechkogel — 46.67°N, 14.85°ELechkogel — 48.00°N, 16.23°E

Loading coastlines…

The named rock units Problematica has been recovered from, largest first. Drawn where the rock is now, not where it formed. 385 further formations hold fewer occurrences each and are not listed. 195 occurrences have no formation on record, which is common for older literature.

Problematica and its relatives

Cambrian

Where Problematica and its relatives were recorded in the Cambrian.

Found in the same rock

1,631 taxa

The Paleobiology Database records at least 1,160 sites for Problematica, 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

534 references

Each of the 2,338 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. 522 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 Problematica

Credit
Barrande, Joachim; Frič, Antonín
Licence
Public Domain
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows it

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itAnimalia through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Andrews 1970