Retzia

Retzia

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
RetziidaePBDB
Diet
suspension feederPBDB, for Retziidina
Life habit
low-level epifaunalPBDB, for Retziidina
Motility
stationary, attachedPBDB, for Retziidina
Vision
blindPBDB, for Rhynchonellata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 213 million years on record.

The record covers at least 419.62 Mya to 205.7 Mya. No occurrence read is dated outside 426.7 Mya to 201.4 Mya.

Silurian — about 5 of 49 occurrencesDevonian — about 9 of 49 occurrencesDevonianCarboniferous — about 3 of 49 occurrencesCarboniferousPermian — about 3 of 49 occurrencesPermianEarly Triassic — about 0 of 49 occurrencesMiddle Triassic — about 17 of 49 occurrencesLate Triassic — about 13 of 49 occurrencesLate TriassicEarly Jurassic — about 0 of 49 occurrences431–423 Mya — about 0.5 occurrences423–416 Mya — about 7 occurrences416–408 Mya — about 2 occurrences400–392 Mya — about 2 occurrences392–384 Mya — about 0.6 occurrences384–377 Mya — about 1 occurrence361–353 Mya — about 0.2 occurrences353–345 Mya — about 1.0 occurrences345–337 Mya — about 0.5 occurrences337–330 Mya — about 0.2 occurrences330–322 Mya — about 0.2 occurrences322–314 Mya — about 0.2 occurrences314–306 Mya — about 0.2 occurrences306–298 Mya — about 0.2 occurrences298–291 Mya — about 1 occurrence291–283 Mya — about 0.2 occurrences283–275 Mya — about 0.2 occurrences275–267 Mya — about 0.0 occurrences259–252 Mya — about 1 occurrence252–244 Mya — about 7 occurrences244–236 Mya — about 12 occurrences236–228 Mya — about 9 occurrences228–220 Mya — about 0.6 occurrences213–205 Mya — about 0.2 occurrences205–197 Mya — about 0.8 occurrences419.62 Mya205.7 Mya431 Mya197 Mya

49 occurrences of Retzia on record, most of them in the Middle Triassic. 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

49 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

21 formations

Verkhneargskaya — 39.00°N, 69.00°ECassian — 46.64°N, 12.20°ECassian — 46.68°N, 12.15°EMarmolata — 46.43°N, 11.82°EWetterstein — 47.30°N, 11.37°EKapp Toscana — 78.53°N, 15.31°EKapp Toscana — 74.42°N, 19.16°ERamp Creek — 39.33°N, 86.67°WLambertenghi — 46.50°N, 13.00°EChortkov — 48.63°N, 25.73°EIdjerane Sandstone — 24.58°N, 3.25°ELynton Slates — 51.22°N, 3.83°WOuamoui — 21.74°S, 165.68°ESandorhegy Limestone — 47.00°N, 17.90°EBleskovy pramen — 48.65°N, 20.67°ESan Cassiano — 46.53°N, 11.42°EKoh-e Qas — 33.75°N, 68.03°EZarubino — 55.63°N, 85.67°ESafonovski — 54.30°N, 86.23°EWellenkalk — 50.30°N, 18.97°EChangxing — 28.91°N, 106.89°EBaird — 40.79°N, 122.30°WMcCloud — 40.71°N, 122.30°W

Loading coastlines…

The named rock units Retzia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 15 occurrences have no formation on record, which is common for older literature.

Retzia and its relatives

Middle Triassic

Where Retzia and its relatives were recorded in the Middle Triassic.

Found in the same rock

801 taxa

The Paleobiology Database records 38 sites for Retzia, 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

27 references

Each of the 49 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. 15 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 Retzia

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

No 3D scan of Retzia 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 itRetziidae through timeFormations of the Middle TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. King 1850