Semionotidae

Semionotidae

Daderot · Public Domain · via Wikidata/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
SemionotiformesPBDB
Diet
durophage, carnivorePBDB, for Semionotiformes
Life habit
nektonicPBDB, for Semionotiformes
Motility
actively mobilePBDB, for Semionotiformes

Time the record covers

At least 194 million years on record.

The record covers at least 266.9 Mya to 72.2 Mya. No occurrence read is dated outside 277.3 Mya to 66 Mya.

Permian — about 31 of 522 occurrencesPermianEarly Triassic — about 5 of 522 occurrencesMiddle Triassic — about 16 of 522 occurrencesLate Triassic — about 132 of 522 occurrencesLate TriassicEarly Jurassic — about 58 of 522 occurrencesEarly JurassicMiddle Jurassic — about 39 of 522 occurrencesLate Jurassic — about 73 of 522 occurrencesLate JurassicEarly Cretaceous — about 135 of 522 occurrencesEarly CretaceousLate Cretaceous — about 33 of 522 occurrencesLate CretaceousPaleocene — about 0 of 522 occurrences282–274 Mya — about 0.7 occurrences274–267 Mya — about 6 occurrences267–260 Mya — about 1 occurrence260–252 Mya — about 23 occurrences252–245 Mya — about 8 occurrences245–238 Mya — about 12 occurrences238–230 Mya — about 5 occurrences230–223 Mya — about 11 occurrences223–216 Mya — about 15 occurrences216–208 Mya — about 21 occurrences208–201 Mya — about 85 occurrences201–194 Mya — about 25 occurrences194–186 Mya — about 4 occurrences186–179 Mya — about 18 occurrences179–172 Mya — about 9 occurrences172–164 Mya — about 30 occurrences164–157 Mya — about 16 occurrences157–150 Mya — about 23 occurrences150–142 Mya — about 44 occurrences142–135 Mya — about 18 occurrences135–128 Mya — about 13 occurrences128–120 Mya — about 44 occurrences120–113 Mya — about 25 occurrences113–106 Mya — about 22 occurrences106–98 Mya — about 19 occurrences98–91 Mya — about 16 occurrences84–76 Mya — about 3 occurrences76–69 Mya — about 4 occurrences69–62 Mya — about 2 occurrences266.9 Mya72.2 Mya282 Mya62 Mya

522 occurrences of Semionotidae on record, most of them in the Early Cretaceous. 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

522 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

182 formations

Westbury — 53.03°N, 0.81°WWestbury — 51.60°N, 2.63°WWestbury — 51.24°N, 2.34°WWestbury — 50.78°N, 2.99°WWestbury — 52.91°N, 0.90°WWestbury — 51.55°N, 2.40°WWestbury — 51.82°N, 2.41°WWestbury — 51.18°N, 3.38°WRaisby — 54.63°N, 1.61°WRaisby — 54.95°N, 1.45°WRaisby — 54.85°N, 1.47°WRaisby — 54.65°N, 1.56°WRaisby — 54.69°N, 1.52°WRaisby — 54.93°N, 1.41°WRaisby — 54.63°N, 1.66°WChinle — 34.44°N, 109.46°WChinle — 35.84°N, 111.25°WChinle — 36.33°N, 106.47°WChinle — 37.05°N, 112.52°WChinle — 36.09°N, 111.36°WChinle — 35.65°N, 111.12°WChinle — 34.68°N, 109.58°WChinle — 38.13°N, 109.18°WChinle — 38.17°N, 109.23°WChinle — 38.28°N, 108.90°WTendaguru — 9.70°S, 39.23°EBoonton — 40.90°N, 74.40°WAïn el Guettar — 33.17°N, 10.26°EAïn el Guettar — 32.68°N, 10.17°EAïn el Guettar — 32.82°N, 10.25°EAïn el Guettar — 32.27°N, 10.33°ESolnhofen — 48.91°N, 11.14°ESolnhofen — 48.90°N, 11.18°EPaluxy — 32.00°N, 98.25°WPaluxy — 33.15°N, 97.57°WPaluxy — 33.08°N, 97.64°WPaluxy — 31.70°N, 98.51°WPaluxy — 32.95°N, 97.69°WPaluxy — 33.50°N, 97.50°WLa Huérguina — 40.06°N, 1.88°WLa Huérguina — 40.12°N, 1.97°WLourinhã — 39.45°N, 9.21°WLourinhã — 39.24°N, 9.34°WLourinhã — 39.85°N, 8.62°WRedonda — 34.94°N, 103.43°WRedonda — 35.00°N, 103.67°WRedonda — 34.98°N, 103.33°WLockatong — 40.77°N, 74.02°WLockatong — 40.20°N, 75.27°WOxford Clay — 51.75°N, 1.18°WOxford Clay — 52.57°N, 0.23°WOxford Clay — 51.50°N, 2.06°WMuschelkalk — 41.27°N, 1.12°EIsalo IIIb — 16.55°S, 46.98°EDouiret — 32.87°N, 10.38°EDouiret — 32.82°N, 10.25°EDouiret — 32.69°N, 10.26°EDouiret — 32.17°N, 10.40°EDouiret — 33.11°N, 10.33°ETerrigal — 33.43°S, 151.34°EBrejo Santo — 7.25°S, 39.12°WBrejo Santo — 7.50°S, 39.00°WBrejo Santo — 7.17°S, 39.31°WHythe — 51.24°N, 0.05°WCedar Mountain — 39.05°N, 111.04°WCedar Mountain — 38.69°N, 111.26°WCedar Mountain — 38.83°N, 109.57°WAntlers — 33.28°N, 97.62°WAntlers — 33.50°N, 97.58°WAntlers — 34.15°N, 95.82°WAntlers — 34.40°N, 96.10°WKhodzhakul — 40.10°N, 65.80°EKhodzhakul — 40.60°N, 71.83°EGrès de Mortinsart — 49.70°N, 5.66°EGrès de Mortinsart — 49.75°N, 5.79°ETowaco — 41.02°N, 74.26°WTowaco — 40.82°N, 74.33°W

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The named rock units Semionotidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 158 further formations hold fewer occurrences each and are not listed. 114 occurrences have no formation on record, which is common for older literature.

Semionotidae and its relatives

Early Cretaceous

Where Semionotidae and its relatives were recorded in the Early Cretaceous.

Found in the same rock

2,350 taxa

The Paleobiology Database records 441 sites for Semionotidae, 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

264 references

Each of the 522 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. 252 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 Semionotidae

Credit
Daderot
Licence
Public Domain
Commercial use
the licence allows it

Synchrotron Imaging scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Semionotidae indet. · UMMP:VP:13664

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 itSemionotiformes through timeFormations of the Early CretaceousThe world it lived on

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