Pterostichus walcotti

via iDigBio · via iDigBio. 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
- PterostichusPBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
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.
3 occurrences of Pterostichus walcotti on record, most of them in the Eocene. 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
3 occurrences- Eocene100%
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
1 formation
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The named rock units Pterostichus walcotti has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Pterostichus walcotti and its relatives
EoceneWhere Pterostichus walcotti and its relatives were recorded in the Eocene.
Found in the same rock
207 taxa- Aphaenogaster mayri2 sites
- Byrrhus romingeri2 sites
- Cleonini2 sites
- Cyttaromyia princetoniana2 sites
- Formica robusta2 sites
- Geralophus fossicius2 sites
- Geralophus lassatus2 sites
- Lasius peritulus2 sites
- Liometopum miocenicum2 sites
- Messor draxil2 sites
- Miomyrmex impactus2 sites
- Protazteca capitata2 sites
- Protazteca elongata2 sites
- Protazteca quadrata2 sites
- Stenus morsei2 sites
- Tipula limi2 sites
- Agabus florissantensis1 site
- Agallia lewisii1 site
- Aleocharopsis caseyi1 site
- Aleocharopsis secunda1 site
- Amara danae1 site
- Amara powellii1 site
- Amara sterilis1 site
- Amara veterata1 site
The Paleobiology Database records 2 sites for Pterostichus walcotti, 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
2 references- Adephagous and clavicorn Coleoptera from the Tertiary deposits at Florissant, Colorado with descriptions of a few other forms and a systematic list of the non-rhynchophorus Tertiary Coleoptera of North America2
- Fossil Coleoptera from Florissant in the United States National Museum1
Each of the 3 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 Pterostichus walcotti
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Pterostichus walcotti 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itPterostichus through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Scudder 1900