Hyolitha

Hyoliths are an extinct group of invertebrates with small conical shells, known from fossils from the Palaeozoic era. They are at least considered lophotrochozoans, possibly being lophophorates, a group which includes the brachiopods, while others consider them as being basal lophotrochozoans, or even molluscs.

Hyolitha

Wilson44691 at English Wikipedia · Public Domain · 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
LophophorataPBDB
Diet
suspension feederPBDB
Life habit
epifaunalPBDB
Motility
stationaryPBDB
Vision
blindPBDB
Environment
marinePBDB

Time the record covers

At least 284 million years on record.

The record covers at least 538.8 Mya to 254.14 Mya. No occurrence read is dated outside 635 Mya to 251.902 Mya.

Cambrian — about 2064 of 2473 occurrencesCambrianOrdovician — about 215 of 2473 occurrencesOrdovicianSilurian — about 52 of 2473 occurrencesDevonian — about 95 of 2473 occurrencesDevonianCarboniferous — about 18 of 2473 occurrencesCarboniferousPermian — about 25 of 2473 occurrencesPermianEarly Triassic — about 0 of 2473 occurrencesMiddle Triassic — about 0 of 2473 occurrences643–629 Mya — about 0.2 occurrences629–616 Mya — about 0.6 occurrences616–603 Mya — about 0.6 occurrences603–590 Mya — about 0.6 occurrences590–576 Mya — about 0.6 occurrences576–563 Mya — about 0.6 occurrences563–550 Mya — about 0.6 occurrences550–536 Mya — about 26 occurrences536–523 Mya — about 542 occurrences523–510 Mya — about 1008 occurrences510–497 Mya — about 442 occurrences497–483 Mya — about 52 occurrences483–470 Mya — about 28 occurrences470–457 Mya — about 73 occurrences457–443 Mya — about 105 occurrences443–430 Mya — about 21 occurrences430–417 Mya — about 38 occurrences417–404 Mya — about 32 occurrences404–390 Mya — about 33 occurrences390–377 Mya — about 23 occurrences377–364 Mya — about 3 occurrences364–350 Mya — about 1 occurrence350–337 Mya — about 3 occurrences337–324 Mya — about 2 occurrences324–311 Mya — about 5 occurrences311–297 Mya — about 6 occurrences297–284 Mya — about 7 occurrences284–271 Mya — about 0.7 occurrences271–258 Mya — about 9 occurrences258–244 Mya — about 8 occurrences538.8 Mya254.14 Mya643 Mya244 Mya

2,473 occurrences of Hyolitha 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

2,473 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

359 formations

Pestrotsvet — 57.35°N, 131.20°EPestrotsvet — 57.67°N, 131.83°EPestrotsvet — 57.17°N, 132.00°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 — 60.83°N, 125.33°EPestrotsvet — 66.40°N, 112.28°EPestrotsvet — 71.83°N, 107.00°EPestrotsvet — 71.50°N, 105.00°EPestrotsvet — 57.40°N, 132.73°EPestrotsvet — 61.29°N, 135.50°EZhujiaqing — 27.93°N, 103.56°EZhujiaqing — 24.67°N, 102.65°EZhujiaqing — 24.55°N, 102.72°EZhujiaqing — 26.28°N, 103.22°EZhujiaqing — 24.73°N, 102.57°EZhujiaqing — 25.52°N, 103.07°EZhujiaqing — 26.38°N, 103.21°EDengying — 30.77°N, 111.32°EDengying — 32.98°N, 106.27°EDengying — 32.50°N, 107.00°EDengying — 33.00°N, 107.92°EDengying — 25.48°N, 103.03°EDengying — 24.55°N, 102.72°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 — 33.67°N, 109.46°EParara — 34.70°S, 137.71°EParara — 34.06°S, 138.02°EParara — 34.73°S, 137.63°EParara — 34.80°S, 137.69°EGowers — 19.56°S, 138.90°EGowers — 19.50°S, 138.93°EParara Limestone — 34.92°S, 137.80°EYanjiahe — 30.73°N, 111.08°EYanjiahe — 30.73°N, 111.03°EYanjiahe — 30.78°N, 111.35°EBastion — 74.10°N, 23.00°WBastion — 73.52°N, 24.68°WBastion — 72.85°N, 25.03°WBastion — 74.35°N, 22.77°WBeetle Creek — 21.77°S, 139.98°EBeetle Creek — 21.89°S, 139.98°EBeetle Creek — 20.83°S, 139.06°ETyuser — 62.00°N, 129.67°ETyuser — 71.03°N, 127.48°ETyuser — 71.57°N, 127.37°ETyuser — 71.52°N, 127.37°ETyuser — 71.07°N, 127.43°EHuangshandong — 30.83°N, 111.17°EHuangshandong — 30.77°N, 111.13°EChapel Island — 46.92°N, 56.00°WChapel Island — 47.00°N, 56.00°WChapel Island — 47.07°N, 55.87°WTindall Limestone — 13.33°S, 130.63°ETindall Limestone — 13.88°S, 131.15°ETindall Limestone — 13.82°S, 131.35°ETindall Limestone — 14.25°S, 131.38°ETindall Limestone — 14.50°S, 132.17°ETindall Limestone — 13.68°S, 131.33°ETindall Limestone — 13.80°S, 131.00°ETindall Limestone — 14.42°S, 132.25°ETindall Limestone — 13.42°S, 130.58°ETindall Limestone — 13.75°S, 131.28°ETindall Limestone — 14.33°S, 132.17°ETindall Limestone — 13.60°S, 131.20°EEmyaksin — 62.00°N, 129.67°EEmyaksin — 70.72°N, 112.88°EEmyaksin — 70.22°N, 113.70°EEmyaksin — 70.72°N, 112.76°ETannenknock — 50.20°N, 11.56°ETannenknock — 50.19°N, 11.55°EMedvezhin — 70.50°N, 103.40°EMedvezhin — 70.67°N, 103.00°EShabakty — 43.08°N, 80.42°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°ELower Comley — 52.56°N, 2.76°WLower Comley — 52.65°N, 2.73°WLower Comley — 52.58°N, 2.67°WYuanshan — 24.81°N, 102.58°EYuanshan — 24.67°N, 102.65°EYuanshan — 25.40°N, 103.38°EYuanshan — 24.84°N, 102.41°EYuanshan — 25.68°N, 102.17°EYuanshan — 25.72°N, 103.99°EFosters Point — 46.00°N, 60.00°WFosters Point — 45.77°N, 60.29°WFosters Point — 48.16°N, 53.70°WBrowns Pond — 42.22°N, 73.73°WBrowns Pond — 43.60°N, 73.32°WKuanchuanpu — 33.00°N, 106.17°EKuanchuanpu — 32.50°N, 106.92°EKuanchuanpu — 32.94°N, 107.70°EKuanchuanpu — 32.32°N, 106.79°EKuanchuanpu — 32.97°N, 106.25°EAjax Limestone — 30.59°S, 138.33°EChulaktau — 43.47°N, 69.87°EChulaktau — 43.62°N, 69.73°EChulaktau — 43.37°N, 70.22°EChulaktau — 43.60°N, 69.33°EChulaktau — 43.47°N, 69.97°EChulaktau — 43.68°N, 69.68°EChulaktau — 43.60°N, 69.45°E

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The named rock units Hyolitha has been recovered from, largest first. Drawn where the rock is now, not where it formed. 335 further formations hold fewer occurrences each and are not listed. 59 occurrences have no formation on record, which is common for older literature.

Hyolitha and its relatives

Cambrian

Where Hyolitha and its relatives were recorded in the Cambrian.

Found in the same rock

2,632 taxa

The Paleobiology Database records at least 990 sites for Hyolitha, 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

404 references

Each of the 2,473 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. 392 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 Hyolitha

Credit
Wilson44691 at English Wikipedia
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Hyolitha 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 itLophophorata through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Marek 1963)