Euselachii

Elasmobranchii is a subclass of Chondrichthyes or cartilaginous fish, including modern sharks, and batomorphs. Members of this subclass are characterised by having five to seven pairs of gill slits opening individually to the exterior, rigid dorsal fins and small placoid scales on the skin. The teeth are in several series; the upper jaw is not fused to the cranium, and the lower jaw is articulated with the upper. The details of this jaw anatomy vary between species, and help distinguish the different elasmobranch clades. The pelvic fins in males are modified to create claspers for the transfer of sperm. There is no swim bladder; instead, these fish maintain buoyancy with large livers rich in oil.

Euselachii

Amaury Laporte · CC BY 2.0 · 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
ElasmobranchiiPBDB
Diet
carnivorePBDB, for Chondrichthyes
Life habit
nektonicPBDB, for Chondrichthyes
Motility
actively mobilePBDB, for Chondrichthyes

Time the record covers

At least 372 million years on record.

The record covers at least 372.15 Mya to 11.7 ka. No occurrence read is dated outside 419.62 Mya to 0 Mya.

Silurian — about 0 of 12000 occurrencesDevonian — about 10 of 12000 occurrencesDevonianCarboniferous — about 67 of 12000 occurrencesCarboniferousPermian — about 210 of 12000 occurrencesPermianEarly Triassic — about 109 of 12000 occurrencesMiddle Triassic — about 236 of 12000 occurrencesLate Triassic — about 272 of 12000 occurrencesLate TriassicEarly Jurassic — about 123 of 12000 occurrencesMiddle Jurassic — about 77 of 12000 occurrencesLate Jurassic — about 148 of 12000 occurrencesEarly Cretaceous — about 573 of 12000 occurrencesEarly CretaceousLate Cretaceous — about 3513 of 12000 occurrencesPaleocene — about 430 of 12000 occurrencesEocene — about 2500 of 12000 occurrencesOligocene — about 334 of 12000 occurrencesMiocene — about 2824 of 12000 occurrencesPliocene — about 385 of 12000 occurrencesPleistocene — about 183 of 12000 occurrences428–414 Mya — about 0.1 occurrences414–399 Mya — about 0.2 occurrences399–385 Mya — about 0.2 occurrences385–371 Mya — about 6 occurrences371–357 Mya — about 5 occurrences357–342 Mya — about 7 occurrences342–328 Mya — about 22 occurrences328–314 Mya — about 12 occurrences314–300 Mya — about 24 occurrences300–285 Mya — about 27 occurrences285–271 Mya — about 25 occurrences271–257 Mya — about 131 occurrences257–243 Mya — about 217 occurrences243–228 Mya — about 198 occurrences228–214 Mya — about 39 occurrences214–200 Mya — about 201 occurrences200–185 Mya — about 55 occurrences185–171 Mya — about 67 occurrences171–157 Mya — about 77 occurrences157–143 Mya — about 142 occurrences143–128 Mya — about 185 occurrences128–114 Mya — about 123 occurrences114–100 Mya — about 330 occurrences100–86 Mya — about 1040 occurrences86–71 Mya — about 1628 occurrences71–57 Mya — about 1144 occurrences57–43 Mya — about 1202 occurrences43–29 Mya — about 1510 occurrences29–14 Mya — about 1332 occurrences14–0 Mya — about 2250 occurrences372.15 Mya11.7 ka428 Mya0 Mya

12,000+ occurrences of Euselachii on record. The Paleobiology Database records this as a living group. 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

12,000 occurrences read

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. The read hit its cap, so every figure above is a floor and the shares are of the occurrences read. More on what this infers.

Found in

at least 893 formations

Mesaverde — 42.85°N, 107.28°WMesaverde — 44.08°N, 107.74°WMesaverde — 44.10°N, 107.75°WMesaverde — 44.17°N, 107.81°WCalvert — 38.54°N, 76.73°WCalvert — 37.93°N, 77.51°WCalvert — 38.60°N, 76.51°WCalvert — 38.74°N, 76.56°WCalvert — 38.38°N, 76.99°WCalvert — 38.55°N, 76.52°WCalvert — 38.67°N, 76.53°WCalvert — 38.18°N, 76.97°WCalvert — 38.75°N, 76.97°WCalvert — 38.17°N, 76.81°WCalvert — 37.77°N, 77.28°WCalvert — 38.40°N, 76.50°WCalvert — 37.54°N, 77.44°WCalvert — 39.20°N, 75.60°WGreenhorn Limestone — 37.22°N, 103.60°WGreenhorn Limestone — 39.00°N, 98.92°WGreenhorn Limestone — 38.58°N, 98.45°WGreenhorn Limestone — 44.65°N, 103.58°WGreenhorn Limestone — 37.69°N, 103.94°WGreenhorn Limestone — 39.81°N, 97.34°WGreenhorn Limestone — 39.74°N, 97.65°WGreenhorn Limestone — 42.64°N, 96.53°WGreenhorn Limestone — 40.01°N, 97.17°WGreenhorn Limestone — 37.46°N, 103.05°WGreenhorn Limestone — 38.92°N, 98.71°WGreenhorn Limestone — 40.75°N, 97.04°WGreenhorn Limestone — 38.87°N, 98.51°WGreenhorn Limestone — 38.87°N, 98.56°WGreenhorn Limestone — 38.94°N, 98.80°WGreenhorn Limestone — 39.04°N, 98.99°WGreenhorn Limestone — 38.78°N, 98.96°WGreenhorn Limestone — 38.74°N, 99.04°WSelsey — 50.80°N, 1.21°WQasr el-Sagha — 29.60°N, 30.67°EQasr el-Sagha — 29.66°N, 30.74°EQasr el-Sagha — 29.32°N, 30.05°EQasr el-Sagha — 29.27°N, 30.01°ELondon Clay — 51.40°N, 0.83°ELondon Clay — 51.51°N, 0.24°ELondon Clay — 51.53°N, 0.31°ELondon Clay — 51.45°N, 0.13°WLondon Clay — 51.62°N, 0.07°WLondon Clay — 51.60°N, 0.19°WLondon Clay — 51.54°N, 0.16°WLondon Clay — 51.27°N, 0.40°WLondon Clay — 51.38°N, 0.24°WLondon Clay — 51.37°N, 1.08°ELondon Clay — 51.83°N, 1.25°ELondon Clay — 51.65°N, 0.07°ELondon Clay — 51.53°N, 0.70°ELondon Clay — 51.42°N, 0.75°WLondon Clay — 51.25°N, 0.93°WLondon Clay — 51.90°N, 1.62°WLondon Clay — 50.78°N, 0.65°WLondon Clay — 50.88°N, 1.30°WLondon Clay — 50.93°N, 1.48°WLondon Clay — 50.80°N, 1.67°WLondon Clay — 51.07°N, 1.74°WLondon Clay — 51.64°N, 0.78°EGehannam — 29.30°N, 30.05°EGehannam — 29.31°N, 30.18°EGehannam — 29.36°N, 30.16°EGehannam — 29.33°N, 30.08°EChucunaque — 9.14°N, 79.75°WChucunaque — 9.13°N, 78.75°WChucunaque — 9.15°N, 78.78°WTallahatta — 31.31°N, 88.73°WTallahatta — 31.57°N, 88.34°WTallahatta — 31.79°N, 88.32°WTallahatta — 31.39°N, 88.69°WTallahatta — 31.30°N, 86.48°WTallahatta — 31.37°N, 86.52°WBirket Qarun — 29.28°N, 30.04°EBirket Qarun — 29.27°N, 30.06°EGosport Sand — 31.54°N, 87.52°WGosport Sand — 31.13°N, 87.93°WGosport Sand — 31.53°N, 87.57°WGosport Sand — 31.50°N, 87.80°WGosport Sand — 31.50°N, 88.50°WGosport Sand — 31.76°N, 88.10°WGosport Sand — 31.59°N, 88.02°WFox Hills — 46.26°N, 100.55°WFox Hills — 46.28°N, 100.52°WFox Hills — 46.05°N, 103.88°WFox Hills — 46.47°N, 99.58°WFox Hills — 46.38°N, 100.85°WFox Hills — 46.10°N, 100.42°WFox Hills — 46.42°N, 100.74°WFox Hills — 46.30°N, 100.33°WFox Hills — 46.30°N, 100.39°WFox Hills — 46.03°N, 100.78°WFox Hills — 46.22°N, 103.99°WFox Hills — 46.11°N, 103.90°WFox Hills — 46.03°N, 100.46°WFox Hills — 46.38°N, 100.32°WFox Hills — 46.41°N, 100.86°WFox Hills — 46.29°N, 100.18°WNewhaven Chalk — 51.45°N, 1.36°WNewhaven Chalk — 50.88°N, 0.81°WNewhaven Chalk — 51.53°N, 0.70°WNewhaven Chalk — 50.67°N, 1.10°WNavesink — 39.76°N, 75.13°WNavesink — 39.95°N, 74.79°WNavesink — 40.31°N, 74.22°WNavesink — 40.33°N, 74.26°WNavesink — 40.10°N, 74.56°WNavesink — 40.40°N, 74.13°WNavesink — 40.40°N, 74.02°WDurlston — 50.60°N, 1.95°WDurlston — 50.62°N, 2.25°WEsbarrondadoiro — 38.11°N, 8.36°WEsbarrondadoiro — 38.17°N, 8.17°WEsbarrondadoiro — 39.30°N, 8.12°WHell Creek — 47.80°N, 106.10°WHell Creek — 46.03°N, 103.77°WHell Creek — 46.21°N, 103.77°WHell Creek — 46.38°N, 103.96°WHell Creek — 45.95°N, 103.96°WHell Creek — 46.41°N, 103.94°WHell Creek — 46.10°N, 103.30°WHell Creek — 46.46°N, 104.02°WHell Creek — 46.33°N, 103.90°WHell Creek — 45.94°N, 103.95°WHell Creek — 47.55°N, 107.13°WHell Creek — 47.62°N, 107.32°WHell Creek — 47.57°N, 107.10°WHell Creek — 47.52°N, 106.40°WHell Creek — 47.55°N, 107.25°WHell Creek — 47.52°N, 107.18°WHell Creek — 47.53°N, 106.92°WHell Creek — 47.07°N, 106.92°WHell Creek — 47.60°N, 106.27°WHell Creek — 47.60°N, 107.23°WHell Creek — 47.52°N, 107.00°WHell Creek — 46.90°N, 101.50°WHell Creek — 47.60°N, 107.00°WHell Creek — 46.33°N, 104.01°WHell Creek — 46.41°N, 103.50°WHell Creek — 45.66°N, 105.08°WHell Creek — 45.89°N, 104.55°WHell Creek — 45.50°N, 103.10°WHell Creek — 45.64°N, 103.49°WGatun — 9.35°N, 79.80°WGatun — 9.35°N, 79.84°WGatun — 9.28°N, 79.89°WCarlile Shale — 39.89°N, 98.03°WCarlile Shale — 39.08°N, 99.24°WCarlile Shale — 38.84°N, 104.88°WCarlile Shale — 39.30°N, 98.45°WCarlile Shale — 43.40°N, 103.36°WCarlile Shale — 39.78°N, 98.15°WCarlile Shale — 42.72°N, 96.95°WCarlile Shale — 42.74°N, 97.03°WCarlile Shale — 38.72°N, 99.32°WCarlile Shale — 39.04°N, 99.07°WCarlile Shale — 39.06°N, 99.11°WMarshalltown — 40.30°N, 74.30°WMarshalltown — 39.55°N, 75.65°WMarshalltown — 40.00°N, 74.82°WJudith River — 46.47°N, 109.30°WJudith River — 46.46°N, 109.41°WJudith River — 46.10°N, 109.10°WJudith River — 48.03°N, 109.01°WJudith River — 47.79°N, 108.94°WJudith River — 48.01°N, 108.91°WJudith River — 48.58°N, 109.22°WJudith River — 48.05°N, 106.32°WJudith River — 48.53°N, 109.67°WJudith River — 47.87°N, 109.15°WJudith River — 48.25°N, 109.30°WJudith River — 46.76°N, 108.00°WJudith River — 47.74°N, 108.96°WJudith River — 43.64°N, 109.35°WKhuff — 20.86°N, 57.60°EKhuff — 21.00°N, 57.66°EBahariya — 28.43°N, 28.92°EBahariya — 28.42°N, 29.04°EBahariya — 28.34°N, 29.13°EBahariya — 28.45°N, 29.04°EBahariya — 28.34°N, 28.74°ESamlat — 23.36°N, 16.03°W

Loading coastlines…

The named rock units Euselachii has been recovered from, largest first. Drawn where the rock is now, not where it formed. The read hit its cap, so each count is a floor. 869 further formations hold fewer occurrences each and are not listed. 2,872 occurrences have no formation on record, which is common for older literature.

Found in the same rock

3,336 taxa

The Paleobiology Database records at least 583 sites for Euselachii, 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

at least 1,386 references

Each of the 12,000 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. That read hit its cap, so each count is a floor. 1,374 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 Euselachii

Credit
Amaury Laporte
Licence
CC BY 2.0
Commercial use
the licence allows it

No 3D scan of Euselachii was found in MorphoSource and Sketchfab.

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

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 itElasmobranchii through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Hay 1902)