Australoneilo gracilis

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
- AustraloneiloPBDB
- Diet
- deposit feederPBDB, for Nuculanoidea
- Life habit
- infaunalPBDB, for Nuculanoidea
- Motility
- facultatively mobilePBDB, for Nuculanoidea
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At most 45 million years on record.
Every occurrence read is dated to somewhere between 100.5 Mya and 56 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
46 occurrences of Australoneilo gracilis on record, most of them in the Paleocene. 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
46 occurrences- Late Cretaceous24%
- Paleocene76%
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
8 formations
- Jagüel Formation · Malargüe Group26
- Sobral Formation6
- Lefipán Formation4
- Roca Formation · Malargüe Group3
- ? Formation2
- Lopez de Bertodano Formation1
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The named rock units Australoneilo gracilis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Australoneilo gracilis and its relatives
PaleoceneWhere Australoneilo gracilis and its relatives were recorded in the Paleocene.
Found in the same rock
194 taxa- Cucullaea antarctica6 sites
- Nucula (Leionucula) suboblonga5 sites
- Panopea5 sites
- Acesta4 sites
- Haumurigonia windhauseniana4 sites
- Astarte venatorum3 sites
- Cucullaea3 sites
- Lahillia3 sites
- Lahillia larseni3 sites
- Ostrea3 sites
- Pacitrigonia3 sites
- Panopea clausa3 sites
- Pinna3 sites
- Pycnodonte3 sites
- Thracia lenticularis3 sites
- Amathusia luisa2 sites
- Ambigostrea2 sites
- Anomia solitaria2 sites
- Aporrhais gregaria2 sites
- Cinulia2 sites
- Cominella praecursor2 sites
- Dentalium2 sites
- Entolium2 sites
- Eriphyla (Dozyia)2 sites
The Paleobiology Database records 10 sites for Australoneilo gracilis, 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
8 references- Molluscs at the K/Pg boundary in Argentina: Extinction and recovery patterns. unpublished Ph.D. thesis31
- Early Paleocene Mollusks of Antarctica: Systematics, Paleoecology and Paleobiogeographic Significance6
- Unpublished data on Cretaceous-Paleocene molluscan assemblages2
- Consideraciones sobre una fauna del Cretácico Superior (Maestrichtiano) del Paso del Sapo, curso medio del Río Chubut2
- Die Lamellibrachiaten, Gastropoden ect. aus der oberen Kreide Südpatagoniens2
- Molluscos del Terciario marino1
- Latest Cretaceous/Earliest Tertiary Transition on Seymour Island, Antarctica1
- Stratigraphy, sedimentology, and paleoecology of Upper Cretaceous/Paleocene shelf-deltaic sediments of Seymour Island1
Each of the 46 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. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1

Picture of Australoneilo gracilis
- 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 itAustraloneilo through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Wilckens 1907)