Crittendenia

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

On record

Recorded, not inferred
Sits inside
ClaraiinaePBDB
Diet
suspension feederPBDB, for Pectinida
Life habit
epifaunalPBDB, for Pectinida
Motility
stationaryPBDB, for Pectinida
Vision
blindPBDB, for Bivalvia
Environment
marinePBDB, for Pectinida

Time the record covers

At least 6.7 million years on record.

The record covers at least 251.1 Mya to 244.4 Mya. No occurrence read is dated outside 251.902 Mya to 241.464 Mya.

Permian — about 0 of 83 occurrencesEarly Triassic — about 79 of 83 occurrencesEarly TriassicMiddle Triassic — about 4 of 83 occurrencesMiddle Triassic252–252 Mya — about 2 occurrences252–251 Mya — about 4 occurrences251–251 Mya — about 3 occurrences251–250 Mya — about 7 occurrences250–250 Mya — about 8 occurrences250–250 Mya — about 8 occurrences250–249 Mya — about 8 occurrences249–249 Mya — about 8 occurrences249–249 Mya — about 8 occurrences249–248 Mya — about 6 occurrences248–248 Mya — about 6 occurrences248–247 Mya — about 6 occurrences247–247 Mya — about 6 occurrences247–247 Mya — about 1 occurrence247–246 Mya — about 0.2 occurrences246–246 Mya — about 0.2 occurrences246–246 Mya — about 0.2 occurrences246–245 Mya — about 0.2 occurrences245–245 Mya — about 0.2 occurrences245–244 Mya — about 0.2 occurrences244–244 Mya — about 0.6 occurrences244–244 Mya — about 0.6 occurrences244–243 Mya — about 0.4 occurrences243–243 Mya — about 0.2 occurrences243–242 Mya — about 0.2 occurrences242–242 Mya — about 0.2 occurrences242–242 Mya — about 0.2 occurrences242–241 Mya — about 0.1 occurrences251.1 Mya244.4 Mya252.4 Mya241 Mya

83 occurrences of Crittendenia on record, most of them in the Early 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

83 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

20 formations

Bac Thuy — 21.85°N, 106.74°EBac Thuy — 21.72°N, 106.67°EBac Thuy — 21.84°N, 106.73°EVikinghogda — 78.28°N, 16.87°EGungdang — 28.67°N, 84.25°ESinbad — 39.00°N, 110.68°WCephalopod Limestone — 10.30°S, 123.71°ECephalopod Limestone — 9.71°S, 124.31°ECephalopod Limestone — 9.83°S, 124.57°EMoenkopi — 40.57°N, 110.49°WSungjar — 29.17°N, 83.08°EYinkeng — 31.08°N, 119.70°EYinkeng — 31.64°N, 117.85°ENarawara — 35.45°N, 135.32°EThaynes — 41.55°N, 114.14°WKhangsar — 28.67°N, 84.25°EFeixianguan — 32.08°N, 105.09°EYelang — 26.14°N, 105.28°ENarabara — 35.37°N, 135.18°EKhunamuh — 34.09°N, 74.98°EMianwali — 32.67°N, 71.80°EDaye — 30.49°N, 107.00°ETulcea Veche — 45.19°N, 28.78°ECeratite Marls — 32.66°N, 71.80°ETartalinskaya — 44.40°N, 50.80°E

Loading coastlines…

The named rock units Crittendenia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Crittendenia and its relatives

Early Triassic

Where Crittendenia and its relatives were recorded in the Early Triassic.

Found in the same rock

197 taxa

The Paleobiology Database records 74 sites for Crittendenia, 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

23 references

Each of the 83 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. 11 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 Crittendenia was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

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

No 3D scan of Crittendenia 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 itClaraiinae through timeFormations of the Early TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Newell and Boyd 1995