Thecideida

Thecideida is an order of cryptic articulate brachiopods characterized by their small size and habit of cementing their ventral valves to hard substrates such as shells, rocks and carbonate hardgrounds. Thecideides first appeared in the Triassic and are common today.

Thecideida

Wilson44691 · 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
RhynchonellataPBDB
Diet
suspension feederPBDB
Life habit
epifaunalPBDB
Motility
stationary, attachedPBDB
Vision
blindPBDB, for Rhynchonellata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 236 million years on record.

The record covers at least 237 Mya to 774 ka. No occurrence read is dated outside 241.464 Mya to 129 ka.

Middle Triassic — about 1 of 265 occurrencesLate Triassic — about 87 of 265 occurrencesLate TriassicEarly Jurassic — about 3 of 265 occurrencesEarly JurassicMiddle Jurassic — about 19 of 265 occurrencesLate Jurassic — about 34 of 265 occurrencesEarly Cretaceous — about 9 of 265 occurrencesEarly CretaceousLate Cretaceous — about 34 of 265 occurrencesLate CretaceousPaleocene — about 6 of 265 occurrencesEocene — about 18 of 265 occurrencesEoceneOligocene — about 13 of 265 occurrencesMiocene — about 19 of 265 occurrencesPliocene — about 7 of 265 occurrencesPleistocene — about 15 of 265 occurrences246–238 Mya — about 1.0 occurrences238–230 Mya — about 51 occurrences230–222 Mya — about 16 occurrences222–213 Mya — about 3 occurrences213–205 Mya — about 3 occurrences205–197 Mya — about 13 occurrences197–189 Mya — about 0.5 occurrences189–181 Mya — about 3 occurrences181–172 Mya — about 5 occurrences172–164 Mya — about 12 occurrences164–156 Mya — about 18 occurrences156–148 Mya — about 16 occurrences148–140 Mya — about 2 occurrences140–131 Mya — about 3 occurrences131–123 Mya — about 4 occurrences123–115 Mya — about 2 occurrences115–107 Mya — about 1 occurrence107–99 Mya — about 0.3 occurrences99–90 Mya — about 6 occurrences90–82 Mya — about 1 occurrence82–74 Mya — about 2 occurrences74–66 Mya — about 25 occurrences66–57 Mya — about 5 occurrences57–49 Mya — about 6 occurrences49–41 Mya — about 2 occurrences41–33 Mya — about 12 occurrences33–25 Mya — about 9 occurrences25–16 Mya — about 8 occurrences16–8.2 Mya — about 10 occurrences8.2–0 Mya — about 26 occurrences237 Mya774 ka246 Mya0 Mya

265 occurrences of Thecideida on record, most of them in the Late Triassic. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

265 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

68 formations

San Cassiano — 46.52°N, 12.12°ESan Cassiano — 46.56°N, 12.14°ESan Cassiano — 46.54°N, 12.17°EKoessen — 47.61°N, 12.57°EKoessen — 47.87°N, 16.05°EKoessen — 47.85°N, 16.02°EKoessen — 48.13°N, 16.24°ECassian — 46.68°N, 12.15°ECassian — 46.54°N, 12.10°ECassian — 46.64°N, 12.20°ECassian — 46.52°N, 11.93°EBirdlip Limestone — 51.94°N, 2.02°WBirdlip Limestone — 52.04°N, 1.78°WBirdlip Limestone — 51.86°N, 2.08°WBirdlip Limestone — 51.85°N, 2.11°WBirdlip Limestone — 51.73°N, 2.24°WSandorhegy Limestone — 47.00°N, 17.90°EVeszprém Marl — 47.09°N, 17.90°ECiply-Malogne Phosphatic Chalk — 50.42°N, 3.94°EKorojon — 22.99°S, 114.09°EKorojon — 22.88°S, 114.13°ESant'Agata Fossili — 45.06°N, 7.94°EWhite Limestone — 51.75°N, 1.17°WWhite Limestone — 51.78°N, 1.92°WAlcobaça — 39.55°N, 8.98°WBilá — 49.98°N, 15.60°EMaastricht — 50.80°N, 5.68°EMaastricht — 50.85°N, 5.82°EGurabo — 19.50°N, 71.18°WRaibl — 47.36°N, 11.48°ERaibl — 47.33°N, 11.46°EOberrhaet — 47.61°N, 12.57°EChay — 46.10°N, 1.13°WTe Whanga Limestone — 43.82°S, 176.50°WAbadia — 38.98°N, 9.07°WMatmor — 30.93°N, 34.97°EKuahongdong — 31.45°N, 104.17°EBazardarin — 37.63°N, 74.58°EWaititi — 35.55°S, 173.44°EWaititi — 35.55°S, 173.49°EWaiareka Volcanic — 45.12°S, 170.98°E

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The named rock units Thecideida has been recovered from, largest first. Drawn where the rock is now, not where it formed. 44 further formations hold fewer occurrences each and are not listed. 111 occurrences have no formation on record, which is common for older literature.

Thecideida and its relatives

Late Triassic

Where Thecideida and its relatives were recorded in the Late Triassic.

Found in the same rock

2,563 taxa

The Paleobiology Database records 194 sites for Thecideida, 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

98 references

Each of the 265 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. 86 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 Thecideida

Credit
Wilson44691
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Thecideida 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 itRhynchonellata through timeFormations of the Late TriassicThe world it lived on

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