Allomma
via iDigBio · CC BY · 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
- HemicidaroidaPBDB
- Diet
- grazerPBDB, for Hemicidaroida
- Life habit
- low-level epifaunalPBDB, for Hemicidaroida
- Motility
- slow-movingPBDB, for Hemicidaroida
- Vision
- limitedPBDB, for Echinoidea
- Environment
- marinePBDB, for Hemicidaroida
Time the record covers
At least 20 million years on record.
The record covers at least 121.4 Mya to 100.5 Mya. No occurrence read is dated outside 125.77 Mya to 93.9 Mya.
5 occurrences of Allomma on record. 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
5 occurrencesThese 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
Loading coastlines…
The named rock units Allomma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Found in the same rock
46 taxa- Tetragramma variolare5 sites
- Catopygus4 sites
- Echinogalerus4 sites
- Temnocidaris (Stereocidaris)4 sites
- Tiaromma4 sites
- Discoides3 sites
- Glyptocyphus3 sites
- Holaster nodulosus3 sites
- Isocrinus3 sites
- Labrotaxis3 sites
- Polydiadema3 sites
- Salenia3 sites
- Cottaldia2 sites
- Cottaldia benettiae2 sites
- Goniasteridae2 sites
- Goniophorus2 sites
- Hemiaster bufo2 sites
- Mastaster villersensis2 sites
- Acanthoceras1 site
- Archiacia sandalina1 site
- Caletaster1 site
- Claviaster1 site
- Codiopsis doma1 site
- Coenholectypus1 site
The Paleobiology Database records 5 sites for Allomma, 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- Cenomanian and Lower Turonian echinoderms from Wilmington, south-east Devon, England3
- The Jurassic and Lower Cretaceous of Wadi Hajar, southern Yemen1
- Paléoécologie et paléobiogéographie des faunes d'échinides du Cénomanien nord-aquitain (Charente-Maritime, France)1
Each of the 5 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 Allomma
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC BY
- Commercial use
- the licence allows it
No 3D scan of Allomma 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 itHemicidaroida through timeThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0.