Byrrhus

Byrrhus is a genus of pill beetles in the family Byrrhidae. There are at least 30 described species in Byrrhus.

Byrrhus

M. Virtala · Copyrighted free use · 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
ByrrhiniPBDB
Motility
actively mobilePBDB, for Arthropoda
Environment
terrestrialPBDB, for Insecta

Time the record covers

At least 33 million years on record.

The record covers at least 33.9 Mya to 129 ka. No occurrence read is dated outside 37.71 Mya to 11.7 ka.

Eocene — about 3 of 18 occurrencesEoceneOligocene — about 2 of 18 occurrencesOligoceneMiocene — about 3 of 18 occurrencesMiocenePliocene — about 0 of 18 occurrencesPleistocene — about 10 of 18 occurrences38–37 Mya — about 0.1 occurrences37–36 Mya — about 1 occurrence36–35 Mya — about 1 occurrence35–33 Mya — about 0.7 occurrences28–27 Mya — about 0.2 occurrences27–26 Mya — about 0.6 occurrences26–24 Mya — about 0.6 occurrences24–23 Mya — about 0.6 occurrences23–22 Mya — about 0.0 occurrences13–12 Mya — about 2 occurrences7.7–6.4 Mya — about 0.4 occurrences6.4–5.1 Mya — about 0.6 occurrences3.8–2.6 Mya — about 0.0 occurrences2.6–1.3 Mya — about 1.0 occurrences1.3–0 Mya — about 9 occurrences33.9 Mya129 ka38.5 Mya0 Mya

18 occurrences of Byrrhus on record, most of them in the Pleistocene. 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

18 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

7 formations

Florissant — 38.92°N, 105.28°WUpper Freshwater-Molasse — 47.67°N, 8.93°EImuruk Volcanics — 65.88°N, 163.13°WRott — 50.75°N, 7.26°EKap København — 82.47°N, 23.66°WOlympia beds — 47.66°N, 122.43°WHighbury Silts and Sands — 51.56°N, 0.06°W

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The named rock units Byrrhus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 occurrences have no formation on record, which is common for older literature.

Byrrhus and its relatives

Pleistocene

Where Byrrhus and its relatives were recorded in the Pleistocene.

Found in the same rock

1,343 taxa

The Paleobiology Database records 15 sites for Byrrhus, 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

15 references

Each of the 18 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. 3 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 Byrrhus

Credit
M. Virtala
Licence
Copyrighted free use
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Byrrhus 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 itByrrhini through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Linnaeus 1767