Dionycha

The Dionycha are a clade of spiders (Araneomorphae:Entelegynae), characterized by the possession of two tarsal claws with tufts of hairs (setae) beside them, which produce strong adhesion, enabling some species to climb glass. The circumscription of the group has varied widely; a 2021 analysis resulted in about 20 families, including Salticidae, Gnaphosidae, and Clubionidae.

Dionycha

Uncredited · 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
EntelegynaePBDB
Life habit
solitaryPBDB, for Arachnida
Motility
actively mobilePBDB, for Arachnida
Environment
terrestrialPBDB, for Arachnida

Time the record covers

At least 121 million years on record.

The record covers at least 121.4 Mya to 11.7 ka. No occurrence read is dated outside 125.77 Mya to 0 Mya.

Early Cretaceous — about 3 of 403 occurrencesEarly CretaceousLate Cretaceous — about 0 of 403 occurrencesPaleocene — about 0 of 403 occurrencesEocene — about 275 of 403 occurrencesEoceneOligocene — about 4 of 403 occurrencesOligoceneMiocene — about 102 of 403 occurrencesMiocenePliocene — about 3 of 403 occurrencesPleistocene — about 2 of 403 occurrences128–124 Mya — about 0.8 occurrences124–120 Mya — about 2 occurrences120–115 Mya — about 0.1 occurrences60–56 Mya — about 0.1 occurrences56–51 Mya — about 1 occurrence51–47 Mya — about 2 occurrences47–43 Mya — about 1 occurrence43–38 Mya — about 0.5 occurrences38–34 Mya — about 248 occurrences34–30 Mya — about 23 occurrences30–26 Mya — about 2 occurrences26–21 Mya — about 12 occurrences21–17 Mya — about 55 occurrences17–13 Mya — about 36 occurrences13–8.6 Mya — about 1 occurrence4.3–0 Mya — about 19 occurrences121.4 Mya11.7 ka128 Mya0 Mya

403 occurrences of Dionycha on record, most of them in the Eocene. 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

403 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

13 formations

Florissant — 38.92°N, 105.28°WNiveau du gypse d'Aix — 43.52°N, 5.45°EShanwang — 36.55°N, 118.71°EYixian — 41.62°N, 120.83°EYixian — 41.19°N, 119.21°EMazantic Shale — 17.15°N, 92.70°WNaibuchi — 47.44°N, 142.76°EBarstow — 34.95°N, 116.83°WArgiles d'lignite du Soissonnais — 49.33°N, 2.66°ERandeck Maar — 48.57°N, 9.53°EUpper Freshwater-Molasse — 47.67°N, 8.93°EBouldnor — 50.74°N, 1.36°WGreen River — 39.72°N, 108.14°WLongjiang — 48.60°N, 123.98°E

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The named rock units Dionycha has been recovered from, largest first. Drawn where the rock is now, not where it formed. 371 occurrences have no formation on record, which is common for older literature.

Dionycha and its relatives

Eocene

Where Dionycha and its relatives were recorded in the Eocene.

Found in the same rock

3,632 taxa

The Paleobiology Database records 107 sites for Dionycha, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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 403 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 content1

Picture of Dionycha

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Dionycha 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 itEntelegynae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Petrunkevitch 1928