Hahniidae

Dwarf sheet spiders (Hahniidae) is a family of araneomorph spiders, first described by Philipp Bertkau in 1878.

Hahniidae

Peter Webb · CC BY 4.0 · 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 most 3.9 million years on record.

Every occurrence read is dated to somewhere between 37.71 Mya and 33.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Eocene — about 15 of 15 occurrencesEoceneOligocene — about 0 of 15 occurrences38–38 Mya — about 0.6 occurrences38–37 Mya — about 0.6 occurrences37–37 Mya — about 0.6 occurrences37–37 Mya — about 0.6 occurrences37–37 Mya — about 0.6 occurrences37–37 Mya — about 0.6 occurrences37–37 Mya — about 0.6 occurrences37–36 Mya — about 0.6 occurrences36–36 Mya — about 0.6 occurrences36–36 Mya — about 0.6 occurrences36–36 Mya — about 0.6 occurrences36–36 Mya — about 0.6 occurrences36–36 Mya — about 0.6 occurrences36–35 Mya — about 0.6 occurrences35–35 Mya — about 0.6 occurrences35–35 Mya — about 0.6 occurrences35–35 Mya — about 0.6 occurrences35–35 Mya — about 0.6 occurrences35–35 Mya — about 0.6 occurrences35–35 Mya — about 0.6 occurrences35–34 Mya — about 0.6 occurrences34–34 Mya — about 0.6 occurrences34–34 Mya — about 0.6 occurrences34–34 Mya — about 0.6 occurrences38.21 Mya33.4 Mya

15 occurrences of Hahniidae on record, most of them in the Eocene. 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

15 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.

Hahniidae and its relatives

Eocene

Where Hahniidae and its relatives were recorded in the Eocene.

Found in the same rock

2,430 taxa

The Paleobiology Database records 10 sites for Hahniidae, 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

6 references

Each of the 15 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Hahniidae

Credit
Peter Webb
Licence
CC BY 4.0
Commercial use
the licence allows it

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

Occurrence data from the Paleobiology Database, CC BY 4.0. Bertkau 1878