Eophrynidae

Eophrynidae is a family of the extinct arachnid order Trigonotarbida. Eophrynids lived during the Carboniferous period in what is now modern Europe and North America. The family is probably found within the "eophrynid assemblage" clade:.

Eophrynidae

Hectonichus · CC BY-SA 3.0 · 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
TrigonotarbidaPBDB
Life habit
solitaryPBDB, for Arachnida
Motility
actively mobilePBDB, for Arachnida
Environment
terrestrialPBDB, for Arachnida

Time the record covers

At least 32 million years on record.

The record covers at least 339.9 Mya to 307 Mya. No occurrence read is dated outside 346.7 Mya to 303.7 Mya.

Carboniferous — about 17 of 17 occurrencesCarboniferous348–346 Mya — about 0.1 occurrences346–345 Mya — about 0.2 occurrences345–343 Mya — about 0.2 occurrences343–342 Mya — about 0.2 occurrences342–340 Mya — about 0.2 occurrences340–339 Mya — about 0.0 occurrences328–327 Mya — about 0.1 occurrences327–325 Mya — about 0.5 occurrences325–324 Mya — about 0.5 occurrences324–322 Mya — about 0.0 occurrences322–321 Mya — about 0.4 occurrences321–319 Mya — about 0.6 occurrences318–316 Mya — about 0.8 occurrences316–315 Mya — about 2 occurrences315–313 Mya — about 1 occurrence313–312 Mya — about 1 occurrence312–310 Mya — about 1 occurrence310–309 Mya — about 3 occurrences309–307 Mya — about 3 occurrences307–306 Mya — about 0.5 occurrences306–304 Mya — about 0.5 occurrences304–303 Mya — about 0.2 occurrences339.9 Mya307 Mya347.6 Mya302.8 Mya

17 occurrences of Eophrynidae on record, most of them in the Carboniferous. 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

17 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

9 formations

Kladno — 50.10°N, 13.72°EKladno — 49.71°N, 13.21°ECraigola Seam — 51.62°N, 3.33°WOstrava — 49.83°N, 18.30°EPocono Mountain — 37.74°N, 80.23°WHorster — 51.57°N, 6.77°EAstrasado — 35.00°N, 106.34°WCarbondale — 41.29°N, 88.19°WFarrington — 51.28°N, 2.46°WShelburn — 39.35°N, 87.38°W

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The named rock units Eophrynidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.

Eophrynidae and its relatives

Carboniferous

Where Eophrynidae and its relatives were recorded in the Carboniferous.

Found in the same rock

96 taxa

The Paleobiology Database records 15 sites for Eophrynidae, 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

16 references

Each of the 17 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. 4 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 Eophrynidae

Credit
Hectonichus
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Eophrynidae 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 itTrigonotarbida through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Karsch 1882