Hexactinosa

No picture of Hexactinosa was found. Wikidata and iDigBio were searched and had none. Wikipedia has a picture filed under this name, but nothing tied it to Hexactinosa itself, so it was not used. 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 Hexactinosa, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
HexasterophoraPBDB
Diet
suspension feederPBDB
Life habit
epifaunalPBDB
Motility
stationary, attachedPBDB
Vision
blindPBDB, for Hexactinellida
Environment
marinePBDB, for Hexactinellida

Time the record covers

At least 437 million years on record.

The record covers at least 449 Mya to 11.63 Mya. No occurrence read is dated outside 452.3 Mya to 5.333 Mya.

Ordovician — about 2 of 728 occurrencesSilurian — about 0 of 728 occurrencesDevonian — about 8 of 728 occurrencesDevonianCarboniferous — about 2 of 728 occurrencesCarboniferousPermian — about 2 of 728 occurrencesPermianEarly Triassic — about 0 of 728 occurrencesMiddle Triassic — about 9 of 728 occurrencesLate Triassic — about 7 of 728 occurrencesEarly Jurassic — about 2 of 728 occurrencesMiddle Jurassic — about 9 of 728 occurrencesLate Jurassic — about 345 of 728 occurrencesEarly Cretaceous — about 40 of 728 occurrencesEarly CretaceousLate Cretaceous — about 205 of 728 occurrencesPaleocene — about 12 of 728 occurrencesEocene — about 45 of 728 occurrencesOligocene — about 8 of 728 occurrencesMiocene — about 32 of 728 occurrencesPliocene — about 0 of 728 occurrencesPleistocene — about 0 of 728 occurrences461–446 Mya — about 2 occurrences384–369 Mya — about 5 occurrences369–354 Mya — about 3 occurrences338–323 Mya — about 2 occurrences292–277 Mya — about 1 occurrence277–261 Mya — about 0.5 occurrences261–246 Mya — about 0.2 occurrences246–231 Mya — about 13 occurrences231–215 Mya — about 2 occurrences200–184 Mya — about 1 occurrence184–169 Mya — about 0.6 occurrences169–154 Mya — about 271 occurrences154–138 Mya — about 84 occurrences138–123 Mya — about 17 occurrences123–108 Mya — about 16 occurrences108–92 Mya — about 38 occurrences92–77 Mya — about 116 occurrences77–61 Mya — about 66 occurrences61–46 Mya — about 12 occurrences46–31 Mya — about 37 occurrences31–15 Mya — about 17 occurrences15–0 Mya — about 23 occurrences449 Mya11.63 Mya461 Mya0 Mya

728 occurrences of Hexactinosa on record, most of them in the Late Jurassic. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

728 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

63 formations

Jasna Gora — 50.07°N, 19.62°EJasna Gora — 50.45°N, 19.52°EJasna Gora — 50.42°N, 19.35°EJasna Gora — 50.73°N, 19.13°EWhite Limestone — 55.22°N, 6.40°WCouches de Birmensdorf — 46.25°N, 5.67°ECalcaires Lites — 45.78°N, 5.52°EZawodzie — 50.82°N, 19.13°EZawodzie — 50.43°N, 19.55°EZawodzie — 50.47°N, 19.55°EUpper Chalk — 51.63°N, 0.80°WUpper Chalk — 51.68°N, 0.57°WUpper Chalk — 51.37°N, 0.45°EUpper Chalk — 50.78°N, 0.00°EUpper Chalk — 50.65°N, 1.57°WUpper Chalk — 50.60°N, 1.20°WLa Manga — 35.95°S, 69.98°WLa Manga — 38.80°S, 70.20°WVic Marls — 41.85°N, 2.23°EVic Marls — 41.95°N, 2.22°EVic Marls — 41.93°N, 2.25°ETutuiri Greensand — 43.75°S, 176.67°ETutuiri Greensand — 43.75°S, 176.68°WWest Melbury Marly Chalk — 51.58°N, 1.47°WCastle Hayne — 35.25°N, 78.07°WCastle Hayne — 34.63°N, 77.73°WCastle Hayne — 34.63°N, 77.75°WCastle Hayne — 34.85°N, 77.70°WCastle Hayne — 34.44°N, 77.83°WAhlen — 51.78°N, 8.03°EAhlen — 51.72°N, 8.03°EAhlen — 51.70°N, 7.92°EAhlen — 51.72°N, 7.85°EPirabas — 0.48°S, 48.17°WPirabas — 1.18°S, 47.20°WPirabas — 1.05°S, 47.16°WPirabas — 0.60°S, 47.31°WHanwang — 31.45°N, 104.17°ELincoln Creek — 47.28°N, 123.52°WLincoln Creek — 46.49°N, 123.80°WChiampo — 45.53°N, 11.25°ELewes Nodular Chalk — 51.90°N, 0.26°WLewes Nodular Chalk — 51.27°N, 0.32°WTakatika Grit — 43.75°S, 176.68°WIlsenburg — 51.90°N, 10.67°EIlsenburg — 51.83°N, 10.78°ENeuburger Weiß — 48.73°N, 11.18°EPeral — 37.12°N, 8.18°WBilá — 49.98°N, 15.60°ELower Chalk — 50.73°N, 0.23°EKarchowice Beds — 50.58°N, 18.20°E

Loading coastlines…

The named rock units Hexactinosa has been recovered from, largest first. Drawn where the rock is now, not where it formed. 39 further formations hold fewer occurrences each and are not listed. 436 occurrences have no formation on record, which is common for older literature.

Hexactinosa and its relatives

Late Jurassic

Where Hexactinosa and its relatives were recorded in the Late Jurassic.

Found in the same rock

2,220 taxa

The Paleobiology Database records 199 sites for Hexactinosa, 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

89 references

Each of the 728 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. 77 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 Hexactinosa was found. Wikidata and iDigBio were searched and had none.

Wikipedia has a picture filed under this name, but nothing tied it to Hexactinosa itself, so it was not used.

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 Hexactinosa, or no answer at all. This entry cannot say which.

No 3D scan of Hexactinosa 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.

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

Keep going

What may have been alongside itHexasterophora through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Schrammen 1903