Asterotheca

Asterotheca is a genus of extinct seedless, spore-bearing, vascularized ferns dating from the Carboniferous of the Paleozoic to the Triassic of the Mesozoic.

Asterotheca

After various authors in Scott, Studies . · Public Domain · 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
MarattialesPBDB
Diet
"photoautotroph"PBDB, for Streptophyta

Time the record covers

At least 101 million years on record.

The record covers at least 307 Mya to 205.7 Mya. No occurrence read is dated outside 358.86 Mya to 201.4 Mya.

Devonian — about 0 of 134 occurrencesCarboniferous — about 18 of 134 occurrencesCarboniferousPermian — about 42 of 134 occurrencesPermianEarly Triassic — about 4 of 134 occurrencesMiddle Triassic — about 10 of 134 occurrencesLate Triassic — about 60 of 134 occurrencesLate TriassicEarly Jurassic — about 0 of 134 occurrences362–357 Mya — about 0.2 occurrences357–351 Mya — about 0.6 occurrences351–346 Mya — about 0.6 occurrences346–340 Mya — about 0.6 occurrences340–335 Mya — about 0.6 occurrences335–329 Mya — about 0.6 occurrences329–324 Mya — about 0.6 occurrences324–318 Mya — about 2 occurrences318–313 Mya — about 2 occurrences313–307 Mya — about 2 occurrences307–302 Mya — about 7 occurrences302–297 Mya — about 4 occurrences297–291 Mya — about 7 occurrences291–286 Mya — about 5 occurrences286–280 Mya — about 5 occurrences280–275 Mya — about 4 occurrences275–269 Mya — about 6 occurrences269–264 Mya — about 6 occurrences264–258 Mya — about 4 occurrences258–253 Mya — about 1 occurrence253–247 Mya — about 4 occurrences247–242 Mya — about 4 occurrences242–236 Mya — about 9 occurrences236–231 Mya — about 23 occurrences231–226 Mya — about 17 occurrences226–220 Mya — about 4 occurrences220–215 Mya — about 4 occurrences215–209 Mya — about 4 occurrences209–204 Mya — about 4 occurrences204–198 Mya — about 2 occurrences307 Mya205.7 Mya362 Mya198 Mya

134 occurrences of Asterotheca on record, most of them in the Late 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

134 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

42 formations

Santa Clara — 28.57°N, 110.21°WSanta Clara — 28.51°N, 110.19°WSanta Clara — 28.56°N, 109.34°WSanta Clara — 28.58°N, 109.67°WSanta Clara — 28.55°N, 109.35°WSanta Clara — 28.57°N, 109.21°WSanta Clara — 28.56°N, 110.13°WSanta Clara — 28.58°N, 109.63°WLawrence Shale — 38.00°N, 95.00°WLawrence Shale — 38.83°N, 95.38°WLawrence Shale — 39.00°N, 95.00°WRio Bonito — 25.30°S, 50.50°WRio Bonito — 23.80°S, 50.20°WCarbondale — 41.28°N, 88.28°WErfurt — 51.75°N, 11.03°EVryheid — 26.50°S, 28.00°EVryheid — 26.00°S, 27.50°EVryheid — 25.50°S, 28.50°EBurgersdorp — 30.68°S, 26.70°EBurgersdorp — 31.00°S, 27.00°EBrazil — 39.13°N, 87.02°WLower La Golondrina — 48.00°S, 68.00°WUpper La Golondrina — 48.00°S, 68.00°WNueva Lubecka — 44.20°S, 70.40°WEr-Yaginskaya Suite — 69.60°N, 63.60°EMahoning — 40.70°N, 80.65°WShelburn — 39.28°N, 87.53°WPiedra Shotel — 49.00°S, 71.00°WTasa Cuna — 31.20°S, 65.50°WMojon de Hierro — 43.80°S, 70.60°WSanta Juana — 37.10°S, 72.90°WSanta Juana — 37.20°S, 72.84°WDe Geerdalen — 78.42°N, 20.84°EDe Geerdalen — 78.29°N, 16.56°ELa Ternera — 27.10°S, 69.77°WWaterford — 33.23°S, 22.55°EDrywood — 38.00°N, 93.00°WHuizachal — 20.67°N, 98.52°WEl Tranquilo — 48.00°S, 68.00°W

Loading coastlines…

The named rock units Asterotheca has been recovered from, largest first. Drawn where the rock is now, not where it formed. 18 further formations hold fewer occurrences each and are not listed. 31 occurrences have no formation on record, which is common for older literature.

Asterotheca and its relatives

Late Triassic

Where Asterotheca and its relatives were recorded in the Late Triassic.

Found in the same rock

460 taxa

The Paleobiology Database records 79 sites for Asterotheca, 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

50 references

Each of the 134 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. 38 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 Asterotheca

Credit
After various authors in Scott, Studies .
Licence
Public Domain
Commercial use
the licence allows it

3D model

Source
Sketchfab
Credit
MGRRE
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itMarattiales through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Presl 1845