Cytilus alternatus
Cytilus alternatus is a species of pill beetle in the family Byrrhidae. It is found in North America.

Ryan Hodnett · CC BY-SA 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
- CytilusPBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
Time the record covers
At most 118 thousand years on record.
Every occurrence read is dated to somewhere between 129 ka and 11.7 ka, and nothing in the dating separates them, so that window is what the record shows rather than a span.
6 occurrences of Cytilus alternatus 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
6 occurrences- Pleistocene100%
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
3 formations
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The named rock units Cytilus alternatus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Cytilus alternatus and its relatives
PleistoceneWhere Cytilus alternatus and its relatives were recorded in the Pleistocene.
Found in the same rock
225 taxa- Bembidion6 sites
- Stenus6 sites
- Aleocharinae5 sites
- Bledius5 sites
- Dyschirius5 sites
- Helophorus5 sites
- Olophrum consimile5 sites
- Omaliinae5 sites
- Quedius5 sites
- Aegialia4 sites
- Aphodius4 sites
- Carabidae4 sites
- Dytiscidae4 sites
- Elateridae4 sites
- Euaesthetinae4 sites
- Eucnecosum4 sites
- Eucnecosum brunnescens4 sites
- Formicidae4 sites
- Gymnusa4 sites
- Mycetoporus4 sites
- Ochthebius4 sites
- Olophrum rotundicolle4 sites
- Patrobus stygicus4 sites
- Pselaphinae4 sites
The Paleobiology Database records 6 sites for Cytilus alternatus, 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
3 references- Fossil Beetle Evidence for a Short Warm Interval near 40,000 yr B.P. at Titusville, Pennsylvania4
- The paleoenvironment of the Olympia beds based on fossil beetles from Discovery Park, Seattle, Washington, U.S.A.1
- Pre-Vashon fossil Coleoptera of Fraser age from the Fraser Lowland, British Columbia1
Each of the 6 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Cytilus alternatus
- Source
- Wikipedia/Commons
- Credit
- Ryan Hodnett
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Cytilus alternatus 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 itCytilus through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Say 1825)