Pseudoctenis

Pseudoctenis is a genus of fossil foliage attributable to the Cycadales. It is one of the most common genera of cycad fossil foliage in the Mesozoic era. Pseudoctenis leaves were ≈ 1m long, they were leaves that are divided into a series of elongated leaflets (pinnate) and attached to a central axis (rachis) are characteristic of many Mesozoic fossil floras. Pseudoctenis are similar to modern-day cycads and some, but not all (Zamites) are actually cycad remains.

No picture of Pseudoctenis 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 Pseudoctenis, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
NilssoniaceaePBDB
Diet
"photoautotroph"PBDB, for Streptophyta

Time the record covers

At least 211 million years on record.

The record covers at least 283.3 Mya to 72.2 Mya. No occurrence read is dated outside 298.9 Mya to 66 Mya.

Carboniferous — about 0 of 221 occurrencesPermian — about 15 of 221 occurrencesPermianEarly Triassic — about 2 of 221 occurrencesMiddle Triassic — about 8 of 221 occurrencesLate Triassic — about 45 of 221 occurrencesLate TriassicEarly Jurassic — about 25 of 221 occurrencesEarly JurassicMiddle Jurassic — about 81 of 221 occurrencesLate Jurassic — about 19 of 221 occurrencesEarly Cretaceous — about 14 of 221 occurrencesEarly CretaceousLate Cretaceous — about 13 of 221 occurrencesLate CretaceousPaleocene — about 0 of 221 occurrences304–295 Mya — about 0.1 occurrences295–287 Mya — about 1 occurrence287–279 Mya — about 2 occurrences279–271 Mya — about 1 occurrence271–263 Mya — about 2 occurrences263–255 Mya — about 5 occurrences255–247 Mya — about 5 occurrences247–239 Mya — about 7 occurrences239–231 Mya — about 13 occurrences231–223 Mya — about 11 occurrences223–215 Mya — about 7 occurrences215–207 Mya — about 7 occurrences207–199 Mya — about 10 occurrences199–191 Mya — about 7 occurrences191–182 Mya — about 7 occurrences182–174 Mya — about 8 occurrences174–166 Mya — about 52 occurrences166–158 Mya — about 29 occurrences158–150 Mya — about 12 occurrences150–142 Mya — about 7 occurrences142–134 Mya — about 5 occurrences134–126 Mya — about 2 occurrences126–118 Mya — about 3 occurrences118–110 Mya — about 2 occurrences110–102 Mya — about 0.9 occurrences102–94 Mya — about 0.3 occurrences94–86 Mya — about 2 occurrences86–77 Mya — about 3 occurrences77–69 Mya — about 5 occurrences69–61 Mya — about 3 occurrences283.3 Mya72.2 Mya304 Mya61 Mya

221 occurrences of Pseudoctenis on record, most of them in the Middle Jurassic. 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

221 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

64 formations

Saltwick — 54.50°N, 0.75°WSaltwick — 54.40°N, 1.00°WSaltwick — 54.30°N, 0.40°WSaltwick — 54.37°N, 1.25°WMolteno — 29.50°S, 29.50°EMolteno — 30.50°S, 29.00°EMolteno — 28.57°S, 29.05°EMolteno — 31.10°S, 26.50°EMolteno — 31.50°S, 28.00°EMolteno — 30.90°S, 26.72°EMolteno — 31.50°S, 27.92°EMolteno — 31.48°S, 26.47°EMolteno — 31.47°S, 26.83°EMolteno — 31.57°S, 26.22°EMolteno — 31.17°S, 28.43°ECape Stewart — 70.50°N, 22.60°WAlmond — 41.77°N, 109.20°WKirkwood — 33.50°S, 25.50°EKirkwood — 33.83°S, 25.00°EKirkwood — 34.00°S, 22.00°EBurgersdorp — 30.73°S, 26.78°EBurgersdorp — 30.70°S, 26.70°EBurgersdorp — 31.00°S, 27.00°EBurgersdorp — 31.00°S, 26.33°EComox — 49.75°N, 125.00°WLower Saltwick — 54.30°N, 0.40°WCloughton — 54.30°N, 0.40°WCloughton — 54.17°N, 0.25°WPekin — 35.50°N, 79.40°WPaso Flores — 40.30°S, 70.70°WPaso Flores — 40.40°S, 70.60°WPaso Flores — 40.50°S, 70.50°WBhuj — 23.32°N, 69.77°EBhuj — 23.20°N, 69.56°EBhuj — 23.48°N, 69.27°ERangal Coal Measures — 23.00°S, 148.00°ERangal Coal Measures — 23.30°S, 148.80°EPautut — 70.25°N, 54.50°WRosario — 17.80°N, 98.20°WZorrillo — 17.60°N, 97.60°WZorrillo — 17.60°N, 97.80°WSteierdorf — 45.08°N, 21.85°EZhiluo — 40.30°N, 110.00°EKamthi — 23.80°N, 86.10°EKamthi — 21.00°N, 84.71°EHinjir — 20.95°N, 84.69°EHinjir — 24.30°N, 86.60°EShemshak — 36.00°N, 51.70°ENishina Kayama — 34.20°N, 131.30°EBoroldai Suite — 43.00°N, 70.00°EAksai Suite — 42.70°N, 77.20°E

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The named rock units Pseudoctenis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 40 further formations hold fewer occurrences each and are not listed. 65 occurrences have no formation on record, which is common for older literature.

Pseudoctenis and its relatives

Middle Jurassic

Where Pseudoctenis and its relatives were recorded in the Middle Jurassic.

Found in the same rock

795 taxa

The Paleobiology Database records 167 sites for Pseudoctenis, 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

79 references

Each of the 221 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. 67 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 Pseudoctenis 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 Pseudoctenis, or no answer at all. This entry cannot say which.

No 3D scan of Pseudoctenis 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.

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 itNilssoniaceae through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Seward 1911