Gerarus collaris

via iDigBio · CC0 · 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
- GerarusPBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
Time the record covers
At most 2.4 million years on record.
Every occurrence read is dated to somewhere between 309.8 Mya and 307.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
3 occurrences of Gerarus collaris 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
3 occurrences- Carboniferous100%
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
- Carbondale Formation · Kewanee Group3
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The named rock units Gerarus collaris has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Gerarus collaris and its relatives
CarboniferousWhere Gerarus collaris and its relatives were recorded in the Carboniferous.
Found in the same rock
148 taxa- Aphantomartus pustulatus2 sites
- Architarbus rotundatus2 sites
- Eoscorpius carbonarius2 sites
- Eucaenus ovalis2 sites
- Geralinura carbonaria2 sites
- Gerarus constrictus2 sites
- Miamia bronsoni2 sites
- Mylacris diplodiscus2 sites
- Palaeocampa anthrax2 sites
- Pleurojulus biornatus2 sites
- Protorthoptera2 sites
- Acantherpestes inequalis1 site
- Acantherpestes major1 site
- Adeloblatta sellardsi1 site
- Adiphlebia lacoana1 site
- Aethophlebia singularis1 site
- Agogoblattina occidua1 site
- Americlus americanus1 site
- Ametretus laevis1 site
- Amousus mazonus1 site
- Amphicentrum orbiculare1 site
- Anegertus cubitalis1 site
- Anepitedius giraffa1 site
- Anthracoscorpio1 site
The Paleobiology Database records 2 sites for Gerarus collaris, 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- New Paleozoic insects from the vicinity of Mazon Creek, Illinois2
- Studies on Upper Carboniferous insects: 1. The Geraridae (Order Protorthoptera)1
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 Gerarus collaris
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itGerarus through timeFormations of the CarboniferousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Handlirsch 1911