Actinosepia canadensis

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
- ActinosepiaPBDB
- Diet
- carnivorePBDB, for Cephalopoda
- Life habit
- nektonicPBDB, for Vampyromorpha
- Motility
- fast-movingPBDB, for Cephalopoda
- Vision
- well-developedPBDB, for Cephalopoda
- Environment
- marinePBDB, for Cephalopoda
Time the record covers
At most 18 million years on record.
Every occurrence read is dated to somewhere between 83.6 Mya and 66 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
8 occurrences of Actinosepia canadensis on record, most of them in the Late Cretaceous. 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
8 occurrences- Late Cretaceous100%
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
3 formations
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The named rock units Actinosepia canadensis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Actinosepia canadensis and its relatives
Late CretaceousWhere Actinosepia canadensis and its relatives were recorded in the Late Cretaceous.
Found in the same rock
114 taxa- Crenella elegantula3 sites
- Cymbophora warrenana3 sites
- Glossus moreauensis3 sites
- Malletia evansi3 sites
- Modiolus galpinianus3 sites
- Nucula cancellata3 sites
- Nucula planomarginata3 sites
- Nymphalucina occidentalis3 sites
- Phelopteria linguaeformis3 sites
- Protocardia subquadrata3 sites
- Baculites2 sites
- Belemnitella bulbosa2 sites
- Cucullaea nebrascensis2 sites
- Cuspidaria ventricosa2 sites
- Discoscaphites conradi2 sites
- Discoscaphites gulosus2 sites
- Dosiniopsis deweyi2 sites
- Drepanochilus2 sites
- Eutrephoceras dekayi2 sites
- Goniomya americana2 sites
- Grammatodon (Cosmetodon) sulcatinus2 sites
- Graphidula2 sites
- Hoploparia2 sites
- Hoploscaphites comprimus2 sites
The Paleobiology Database records 8 sites for Actinosepia canadensis, 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
4 references- Fossil coleoids from the Late Cretaceous (Campanian & Maastrichtian) of the Western Interior4
- Scaphitid ammonites of the Upper Cretaceous (Maastrichtian) Fox Hills Formation in South Dakota and Wyoming2
- Geology of the Fort Peck area, Garfield, McCone and Valley counties, Montana1
- Geology of the Southern Alberta Plains. Part II. Paleontology of the marine formations of the Montana Group1
Each of the 8 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 Actinosepia canadensis
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Actinosepia canadensis 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 itActinosepia through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Whiteaves 1897