Microgaster primordialis

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
- MicrogasterPBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
Time the record covers
At most 3.1 million years on record.
Every occurrence read is dated to somewhere between 37 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 Microgaster primordialis 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 Microgaster primordialis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Microgaster primordialis and its relatives
EoceneWhere Microgaster primordialis and its relatives were recorded in the Eocene.
Found in the same rock
23 taxa- Amara cockerelli1 site
- Archiponera wheeleri1 site
- Ataenius restructus1 site
- Bruchus exhumatus1 site
- Carabidae1 site
- Cheilosia miocenica1 site
- Glossina oligocenus1 site
- Glossina osborni1 site
- Gryllacrididae1 site
- Leptacinus leidyi1 site
- Ocymoromelitta miocenica1 site
- Pachybaris rudis1 site
- Paracosmus (Paracosmus) coquilletti1 site
- Pepsinites avitula1 site
- Planocephalus aselloides1 site
- Protazteca hendersoni1 site
- Pseudomesauletes (Pseudomesauletes) ibis1 site
- Rhogas tertiarius1 site
- Tabanus hipparionis1 site
- Tabanus parahippi1 site
- Taracticus hypogaeus1 site
- Tettigoniidae1 site
- Tipula needhami1 site
The Paleobiology Database records 1 site for Microgaster primordialis, and this reads all of them. The number is how many of those sites it was catalogued from too.
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- The parasitic Hymenoptera of the Tertiary of Florissant, Colorado2
- Fossil Parasitic and Phytophagous Hymenoptera from Florissant, Colorado1
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 the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Microgaster primordialis
- 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 Microgaster primordialis 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itMicrogaster through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Brues 1906