Tetradella

Tetradella

via iDigBio · CC BY-NC-SA · 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
TetradellidaePBDB
Diet
suspension feederPBDB, for Palaeocopida
Life habit
epifaunalPBDB, for Palaeocopida
Motility
actively mobilePBDB, for Ostracoda
Vision
limitedPBDB, for Ostracoda
Environment
marinePBDB, for Ostracoda

Time the record covers

At least 75 million years on record.

The record covers at least 469.1 Mya to 393.47 Mya. No occurrence read is dated outside 471.3 Mya to 387.95 Mya.

Ordovician — about 96 of 98 occurrencesOrdovicianSilurian — about 0 of 98 occurrencesDevonian — about 2 of 98 occurrencesDevonian473–470 Mya — about 1 occurrence470–467 Mya — about 3 occurrences467–464 Mya — about 4 occurrences464–461 Mya — about 3 occurrences461–459 Mya — about 4 occurrences459–456 Mya — about 13 occurrences456–453 Mya — about 21 occurrences453–450 Mya — about 32 occurrences450–447 Mya — about 10 occurrences447–444 Mya — about 4 occurrences444–441 Mya — about 0.9 occurrences395–392 Mya — about 0.5 occurrences392–389 Mya — about 1 occurrence389–386 Mya — about 0.4 occurrences469.1 Mya393.47 Mya473 Mya386 Mya

98 occurrences of Tetradella on record, most of them in the Ordovician. 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

98 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

33 formations

Whittaker — 62.00°N, 127.00°WWhittaker — 61.52°N, 124.87°WWhittaker — 62.47°N, 124.85°WWhittaker — 63.28°N, 125.35°WWhittaker — 61.48°N, 125.05°WWhittaker — 62.46°N, 124.88°WWhittaker — 62.50°N, 125.25°WDecorah Shale — 44.00°N, 92.00°WDecorah Shale — 46.00°N, 94.00°WEsbataottine — 62.00°N, 127.00°WEsbataottine — 61.63°N, 125.73°WEsbataottine — 61.72°N, 125.93°WEsbataottine — 62.52°N, 124.78°WLiben — 49.72°N, 13.57°ELiben — 49.80°N, 13.63°ELiben — 49.82°N, 13.70°ELiben — 49.68°N, 13.47°EDunleith — 42.00°N, 94.00°WIon — 42.00°N, 94.00°WOnondaga — 40.48°N, 76.53°WOnondaga — 39.73°N, 78.08°WCummingsville — 46.00°N, 94.00°WDubuque — 46.00°N, 94.00°WDubuque — 42.00°N, 94.00°WFort Atkinson Limestone — 42.00°N, 94.00°WBrainard Shale — 42.00°N, 94.00°WTachilla — 32.00°N, 4.00°WTachilla — 31.45°N, 4.17°WRichmond — 45.90°N, 86.87°WRichmond — 45.83°N, 86.88°WDecorah — 43.12°N, 91.27°WBucke — 47.42°N, 79.60°WCarters Limestone — 35.50°N, 86.50°WHermitage — 35.50°N, 86.50°WStewartville — 46.00°N, 94.00°WGuttenberg — 42.00°N, 94.00°WWise Lake — 42.00°N, 94.00°WSunblood, Esbataottine — 62.00°N, 127.00°WFonte da Horta — 41.00°N, 8.00°WLa Bastida Shales — 41.00°N, 6.00°WBills Creek — 45.85°N, 85.88°W

Loading coastlines…

The named rock units Tetradella has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 further formations hold fewer occurrences each and are not listed. 26 occurrences have no formation on record, which is common for older literature.

Tetradella and its relatives

Ordovician

Where Tetradella and its relatives were recorded in the Ordovician.

Found in the same rock

723 taxa

The Paleobiology Database records 78 sites for Tetradella, 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

26 references

Each of the 98 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. 14 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 Tetradella

Source
iDigBio
Credit
via iDigBio
Licence
CC BY-NC-SA
Commercial use
the licence does not allow it

No 3D scan of Tetradella 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itTetradellidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ulrich 1890