Thecia

Thecia

via iDigBio · CC0 · via iDigBio. 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
TheciidaePBDB
Diet
suspension feeder, photosymbioticPBDB, for Tabulata
Life habit
epifaunalPBDB, for Tabulata
Motility
stationary, attachedPBDB, for Tabulata
Vision
blindPBDB, for Anthozoa

Time the record covers

At least 18 million years on record.

The record covers at least 443.1 Mya to 425 Mya. No occurrence read is dated outside 445.5 Mya to 419.62 Mya.

Ordovician — about 3 of 70 occurrencesOrdovicianSilurian — about 67 of 70 occurrencesSilurianDevonian — about 0 of 70 occurrences446–445 Mya — about 0.5 occurrences445–444 Mya — about 1 occurrence444–443 Mya — about 1 occurrence443–442 Mya — about 0.5 occurrences442–442 Mya — about 0.4 occurrences442–441 Mya — about 0.4 occurrences441–440 Mya — about 0.4 occurrences440–439 Mya — about 0.4 occurrences439–438 Mya — about 0.4 occurrences438–437 Mya — about 0.5 occurrences437–436 Mya — about 0.5 occurrences436–435 Mya — about 0.5 occurrences435–434 Mya — about 0.5 occurrences434–433 Mya — about 0.6 occurrences433–433 Mya — about 6 occurrences433–432 Mya — about 10 occurrences432–431 Mya — about 10 occurrences431–430 Mya — about 6 occurrences430–429 Mya — about 6 occurrences429–428 Mya — about 5 occurrences428–427 Mya — about 4 occurrences427–426 Mya — about 3 occurrences426–425 Mya — about 3 occurrences425–424 Mya — about 3 occurrences424–424 Mya — about 3 occurrences424–423 Mya — about 3 occurrences423–422 Mya — about 0.2 occurrences422–421 Mya — about 0.2 occurrences421–420 Mya — about 0.2 occurrences420–419 Mya — about 0.1 occurrences443.1 Mya425 Mya446 Mya419.1 Mya

70 occurrences of Thecia on record, most of them in the Silurian. 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

70 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

27 formations

Steinsfjorden — 68.79°N, 14.95°EUpper Visby — 57.63°N, 18.30°EUpper Visby — 57.82°N, 18.48°EJaani — 58.57°N, 22.29°EJaani — 58.62°N, 22.90°ETernava Suite — 51.82°N, 34.22°ETernava Suite — 48.87°N, 26.53°ETernava Suite — 48.65°N, 26.80°EStonewall — 50.13°N, 97.32°WWabash — 40.42°N, 85.80°WLa Vieille — 48.13°N, 65.83°WSlite Beds — 57.72°N, 18.80°EKopanina — 49.95°N, 14.22°EMuch Wenlock Limestone — 52.50°N, 2.08°WMuksha subsuite — 48.00°N, 26.00°EMuksha subsuite — 48.62°N, 26.73°EMuch Wenlock — 52.60°N, 2.55°WMuch Wenlock — 52.50°N, 2.08°WLouisville Limestone — 38.26°N, 85.63°WHalla Beds — 57.53°N, 18.43°ELower Visby Beds — 57.63°N, 18.30°EUpper Visby Beds — 57.63°N, 18.30°EMotol — 49.77°N, 13.25°EVrublevtsy Subsuite — 48.55°N, 26.82°EWest Khatanzeya — 71.00°N, 58.00°EMarshrutny — 65.58°N, 59.75°EKuba — 57.00°N, 59.00°EQiaergaye — 45.95°N, 83.62°EShaerbuer — 46.78°N, 85.72°EKhandyg — 62.93°N, 138.10°E

Loading coastlines…

The named rock units Thecia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 further formations hold fewer occurrences each and are not listed. 20 occurrences have no formation on record, which is common for older literature.

Thecia and its relatives

Silurian

Where Thecia and its relatives were recorded in the Silurian.

Found in the same rock

678 taxa

The Paleobiology Database records 57 sites for Thecia, 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

30 references

Each of the 70 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. 18 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 Thecia

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Thecia was found in MorphoSource and Sketchfab.

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 itTheciidae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Milne-Edwards and Haime 1849