Tropidodiscidae

Tropidodiscidae is an extinct family of Paleozoic fossil molluscs with isostrophically coiled shells. They are of uncertain position taxonomically, in other words it is not known whether they were s.

No picture of Tropidodiscidae was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Tropidodiscidae, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
TropidodiscoideaPBDB
Diet
detritivorePBDB, for Bellerophontida
Life habit
low-level epifaunalPBDB, for Bellerophontida
Motility
slow-movingPBDB, for Bellerophontida
Vision
limitedPBDB, for Gastropoda
Environment
marinePBDB, for Bellerophontida

Time the record covers

At least 239 million years on record.

The record covers at least 493.5 Mya to 254.14 Mya. No occurrence read is dated outside 497 Mya to 251.902 Mya.

Cambrian — about 16 of 358 occurrencesOrdovician — about 144 of 358 occurrencesOrdovicianSilurian — about 33 of 358 occurrencesSilurianDevonian — about 106 of 358 occurrencesDevonianCarboniferous — about 41 of 358 occurrencesCarboniferousPermian — about 18 of 358 occurrencesPermianEarly Triassic — about 0 of 358 occurrences502–493 Mya — about 5 occurrences493–485 Mya — about 16 occurrences485–476 Mya — about 31 occurrences476–468 Mya — about 20 occurrences468–459 Mya — about 35 occurrences459–451 Mya — about 29 occurrences451–442 Mya — about 24 occurrences442–434 Mya — about 6 occurrences434–425 Mya — about 15 occurrences425–417 Mya — about 23 occurrences417–408 Mya — about 33 occurrences408–400 Mya — about 9 occurrences400–391 Mya — about 18 occurrences391–383 Mya — about 20 occurrences383–374 Mya — about 3 occurrences374–366 Mya — about 1 occurrence366–357 Mya — about 13 occurrences357–349 Mya — about 14 occurrences349–340 Mya — about 11 occurrences340–332 Mya — about 3 occurrences332–323 Mya — about 2 occurrences323–315 Mya — about 0.5 occurrences315–306 Mya — about 1 occurrence306–298 Mya — about 7 occurrences298–289 Mya — about 1 occurrence289–281 Mya — about 2 occurrences281–272 Mya — about 0.7 occurrences264–255 Mya — about 4 occurrences255–247 Mya — about 10 occurrences493.5 Mya254.14 Mya502 Mya247 Mya

358 occurrences of Tropidodiscidae 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

358 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

185 formations

Kokbajtal — 48.24°N, 76.89°EKokbajtal — 47.30°N, 77.80°EChhidru — 32.45°N, 72.17°EChhidru — 32.42°N, 72.12°EChhidru — 32.47°N, 71.97°EChhidru — 32.47°N, 71.95°EChhidru — 32.48°N, 71.85°EChhidru — 32.72°N, 71.75°EBedford Shale — 41.59°N, 81.57°WBedford Shale — 41.38°N, 81.56°WBedford Shale — 41.50°N, 81.70°WDangarfield — 32.05°S, 150.92°EDangarfield — 32.03°S, 150.97°ESarka — 50.00°N, 14.00°ESarka — 49.73°N, 13.60°ESarka — 49.77°N, 13.60°ESarka — 50.12°N, 14.38°ELexington Limestone — 37.65°N, 84.77°WLexington Limestone — 38.00°N, 84.67°WPribalkhash — 48.24°N, 76.89°EPribalkhash — 47.22°N, 77.06°EMoscow — 42.90°N, 76.76°WMoscow — 42.68°N, 75.46°WMoscow — 42.52°N, 74.86°WMoscow — 42.55°N, 74.49°WSaint-Chinian — 43.33°N, 2.53°ESaint-Chinian — 43.44°N, 2.89°ESaint-Chinian — 43.48°N, 2.96°ESaint-Chinian — 43.33°N, 3.17°ESaint-Chinian — 43.42°N, 2.95°ENavas de Estena — 39.00°N, 4.00°WKopanina — 50.05°N, 14.37°EKopanina — 49.97°N, 14.17°EKopanina — 49.93°N, 14.05°EKopanina — 49.96°N, 14.10°ETabberabbera — 37.78°S, 147.39°ETachilla — 31.45°N, 4.17°WTachilla — 31.42°N, 4.22°WTachilla — 31.40°N, 5.33°WCanon de Caballeros — 23.75°N, 99.26°WKersadiou — 48.32°N, 4.23°WMcIvor — 37.05°S, 144.83°EMcIvor — 34.08°S, 151.02°ELampazar — 23.00°S, 66.00°WLampazar — 24.14°S, 65.97°WSanta Rosita — 24.79°S, 65.38°WSanta Rosita — 23.75°S, 63.58°WAntelope Valley — 37.35°N, 115.77°WAntelope Valley — 38.96°N, 116.49°WAntelope Valley — 36.88°N, 116.66°WMotol — 50.00°N, 17.78°EMotol — 49.97°N, 14.07°ENamoi — 30.98°S, 150.50°ENamoi — 30.58°S, 150.60°ESurvey Peak — 50.78°N, 116.29°WSurvey Peak — 52.03°N, 116.84°WOxford — 45.22°N, 75.68°WLogan — 39.62°N, 85.45°WLogan — 38.78°N, 82.93°W

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The named rock units Tropidodiscidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 161 further formations hold fewer occurrences each and are not listed. 20 occurrences have no formation on record, which is common for older literature.

Tropidodiscidae and its relatives

Ordovician

Where Tropidodiscidae and its relatives were recorded in the Ordovician.

Found in the same rock

2,785 taxa

The Paleobiology Database records 317 sites for Tropidodiscidae, 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

169 references

Each of the 358 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. 157 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 content0

No picture of Tropidodiscidae was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Tropidodiscidae, or no answer at all. This entry cannot say which.

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itTropidodiscoidea through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Knight 1956)