Daonella

Daonella is a genus of oyster-like saltwater clams, marine bivalve mollusks which lived in the middle to late Triassic period. They are related to the genera Aparimella and Halobia. Since they were ubiquitous in the Arctic, Tethys and Panthalassa seas, they are frequently used as index fossils in dating rocks to the Triassic period. However, the systematic classification of the Daonella is still an area of ongoing research.

Daonella

Ghedoghedo · CC BY-SA 3.0 · 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
HalobiidaePBDB
Diet
suspension feederPBDB, for Ostreida
Life habit
epifaunalPBDB, for Ostreida
Motility
stationary, attachedPBDB, for Ostreida
Vision
blindPBDB, for Bivalvia
Environment
marine,brackishPBDB, for Ostreida

Time the record covers

At least 171 million years on record.

The record covers at least 382.31 Mya to 211.18 Mya. No occurrence read is dated outside 393.47 Mya to 201.4 Mya.

Devonian — about 1 of 622 occurrencesDevonianCarboniferous — about 0 of 622 occurrencesPermian — about 0 of 622 occurrencesEarly Triassic — about 5 of 622 occurrencesMiddle Triassic — about 552 of 622 occurrencesLate Triassic — about 64 of 622 occurrencesLate TriassicEarly Jurassic — about 0 of 622 occurrences397–391 Mya — about 0.3 occurrences391–384 Mya — about 0.6 occurrences384–377 Mya — about 0.2 occurrences257–251 Mya — about 0.0 occurrences251–244 Mya — about 80 occurrences244–238 Mya — about 449 occurrences238–231 Mya — about 74 occurrences231–224 Mya — about 11 occurrences224–218 Mya — about 2 occurrences218–211 Mya — about 2 occurrences211–204 Mya — about 3 occurrences204–198 Mya — about 0.2 occurrences382.31 Mya211.18 Mya397 Mya198 Mya

622 occurrences of Daonella 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

622 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

90 formations

Prida — 40.28°N, 118.08°WPrida — 40.47°N, 118.17°WPrida — 40.42°N, 118.14°WPrida — 40.23°N, 118.10°WBuchenstein — 45.82°N, 10.47°EBuchenstein — 46.57°N, 11.67°EBuchenstein — 46.00°N, 10.55°EBuchenstein — 46.42°N, 11.80°EBuchenstein — 46.47°N, 11.85°EBuchenstein — 46.66°N, 11.91°EBuchenstein — 46.61°N, 11.90°EBuchenstein — 46.45°N, 11.99°EBuchenstein — 46.55°N, 11.62°EBuchenstein — 46.53°N, 11.67°EBuchenstein — 46.58°N, 11.76°EBuchenstein — 46.33°N, 12.00°EBotneheia — 78.22°N, 17.51°EBotneheia — 78.58°N, 15.29°EBotneheia — 78.27°N, 16.86°EBotneheia — 78.33°N, 16.45°EBotneheia — 78.53°N, 15.31°EBotneheia — 78.31°N, 14.07°EBotneheia — 78.29°N, 16.56°EBesano — 45.91°N, 8.95°ECassian — 46.50°N, 11.86°ECassian — 46.55°N, 12.27°ECassian — 46.52°N, 11.96°ECassian — 46.68°N, 12.15°ECassian — 46.57°N, 11.94°ECassian — 46.58°N, 12.23°ECassian — 46.54°N, 11.62°EWetterstein — 47.30°N, 11.37°EWetterstein — 47.30°N, 11.33°EKapp Toscana — 78.58°N, 15.29°EKapp Toscana — 78.33°N, 16.48°EKapp Toscana — 78.27°N, 16.86°EKapp Toscana — 78.53°N, 15.31°EKapp Toscana — 74.42°N, 19.16°ECataloi — 45.10°N, 28.73°EBravaisberget — 77.62°N, 14.98°EBravaisberget — 78.10°N, 13.88°EUlakhan-Krest — 71.81°N, 127.24°EUlakhan-Krest — 71.74°N, 127.82°EUlakhan-Krest — 72.95°N, 121.70°EVászoly — 47.14°N, 18.02°EVászoly — 46.98°N, 17.75°EVászoly — 46.92°N, 17.81°EMarmolata — 46.43°N, 11.82°EMarmolata — 46.45°N, 11.87°EMarmolata — 46.54°N, 11.75°EFelsõörs — 47.01°N, 17.93°ETschermakfjellet — 78.49°N, 20.32°EQingyan — 26.92°N, 108.73°EQingyan — 26.35°N, 106.70°EVal di Centa Marls — 46.03°N, 11.08°EFavret — 39.61°N, 117.49°WBuchenstein — 46.88°N, 17.60°EBuchenstein — 46.91°N, 17.78°EWengen — 46.31°N, 11.57°EWengen — 46.57°N, 11.75°EWengen — 46.55°N, 11.62°EWengen — 45.99°N, 10.17°ESan Felix — 29.19°S, 70.45°WSan Felix — 28.75°S, 70.45°WDorgicse — 46.93°N, 17.78°EBaifeng — 24.83°N, 106.75°EBaifeng — 23.53°N, 105.90°EBaifeng — 23.98°N, 104.39°EHong Hoi — 18.50°N, 99.83°EHong Hoi — 18.67°N, 99.92°ENadaska Limestones — 48.53°N, 20.38°E

Loading coastlines…

The named rock units Daonella has been recovered from, largest first. Drawn where the rock is now, not where it formed. 66 further formations hold fewer occurrences each and are not listed. 270 occurrences have no formation on record, which is common for older literature.

Daonella and its relatives

Middle Triassic

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

Found in the same rock

1,305 taxa

The Paleobiology Database records 424 sites for Daonella, 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

103 references

Each of the 622 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. 91 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 Daonella

Credit
Ghedoghedo
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itHalobiidae through timeFormations of the Middle TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Mojsisovics 1874)