Zygadenia

Zygadenia is an extinct genus of archostematan beetles from the Early Jurassic to Early Cretaceous. It is considered to be a senior synonym of Notocupes by Kirejtshuk (2020), but other researchers suggest to reserve the genus Zygadenia as a form taxon for isolated elytra that probably belong to the genus Notocupes, while retaining Notocupes as a valid genus for complete body fossils.

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

On record

Recorded, not inferred
Sits inside
ArchostemataPBDB
Motility
actively mobilePBDB, for Arthropoda
Environment
terrestrialPBDB, for Insecta

Time the record covers

At least 126 million years on record.

The record covers at least 227.3 Mya to 100.5 Mya. No occurrence read is dated outside 233.6 Mya to 93.9 Mya.

Late Triassic — about 1 of 25 occurrencesLate TriassicEarly Jurassic — about 5 of 25 occurrencesEarly JurassicMiddle Jurassic — about 0 of 25 occurrencesLate Jurassic — about 2 of 25 occurrencesLate JurassicEarly Cretaceous — about 16 of 25 occurrencesEarly CretaceousLate Cretaceous — about 1 of 25 occurrences236–232 Mya — about 0.3 occurrences232–227 Mya — about 0.7 occurrences202–198 Mya — about 0.9 occurrences198–193 Mya — about 1 occurrence188–183 Mya — about 0.3 occurrences183–178 Mya — about 2 occurrences178–173 Mya — about 1 occurrence149–144 Mya — about 2 occurrences144–140 Mya — about 2 occurrences140–135 Mya — about 0.2 occurrences135–130 Mya — about 1 occurrence130–125 Mya — about 3 occurrences125–120 Mya — about 7 occurrences120–115 Mya — about 2 occurrences115–110 Mya — about 0.6 occurrences110–106 Mya — about 0.4 occurrences106–101 Mya — about 0.4 occurrences101–96 Mya — about 0.7 occurrences96–91 Mya — about 0.3 occurrences227.3 Mya100.5 Mya236 Mya91 Mya

25 occurrences of Zygadenia on record, most of them in the Early Cretaceous. 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

25 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

12 formations

Weald Clay — 51.13°N, 0.35°WWeald Clay — 51.17°N, 0.30°WArgun — 51.71°N, 113.39°ECattamarra Coal Measures — 30.26°S, 115.23°ELulworth — 50.60°N, 1.95°WLulworth — 51.08°N, 1.98°WSharteg — 44.14°N, 95.78°EXiaomeigou — 37.87°N, 95.26°EHassberge — 50.01°N, 10.67°EZaza — 53.30°N, 112.09°EMata Amarilla — 49.52°S, 71.50°WYixian — 41.33°N, 119.13°ESinuiju — 40.08°N, 124.42°EJinju — 35.13°N, 128.10°E

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The named rock units Zygadenia has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Zygadenia and its relatives

Early Cretaceous

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

Found in the same rock

493 taxa

The Paleobiology Database records 16 sites for Zygadenia, 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

13 references

Each of the 25 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. 1 further reference is 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 Zygadenia 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 Zygadenia, or no answer at all. This entry cannot say which.

No 3D scan of Zygadenia 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 itArchostemata through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Handlirsch 1906