Roloboceras horridum
No picture of Roloboceras horridum was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Roloboceras horridum, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- RolobocerasPBDB
- Diet
- carnivorePBDB, for Ammonoidea
- Life habit
- nektonicPBDB, for Ammonoidea
- Motility
- fast-movingPBDB, for Ammonoidea
- Vision
- well-developedPBDB, for Cephalopoda
- Environment
- marinePBDB, for Cephalopoda
Time the record covers
At most 8.2 million years on record.
Every occurrence read is dated to somewhere between 121.4 Mya and 113.2 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
3 occurrences of Roloboceras horridum on record, most of them in the Early 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
3 occurrences- Early 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
1 formation
- Atherfield Clay Formation · Lower Greensand Group3
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The named rock units Roloboceras horridum has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Roloboceras horridum and its relatives
Early CretaceousWhere Roloboceras horridum and its relatives were recorded in the Early Cretaceous.
Found in the same rock
141 taxa- Hoploparia longimana3 sites
- Roloboceras hambrovi3 sites
- Roloboceras perli3 sites
- Anomia convexa2 sites
- Anomia laevigata2 sites
- Atherfieldastacus magnus2 sites
- Bathraspira neocomiensis2 sites
- Bathrotomaria atherfieldensis2 sites
- Callianassa2 sites
- Deshayesites2 sites
- Falcimytilus lanceolata2 sites
- Gervillia linguloides2 sites
- Globularia sublaevigata2 sites
- Linuparus carteri2 sites
- Longinuculana spathulata2 sites
- Mesosaccella scapha2 sites
- Metacerithium turriculatum2 sites
- Mithracites vectensis2 sites
- Modiolus aequalis2 sites
- Nemocardium ibbetsoni2 sites
- Ophiura2 sites
- Panopea (Myopsis) plicata2 sites
- Parmicorbula striatula2 sites
- Perissoptera glabra2 sites
The Paleobiology Database records 3 sites for Roloboceras horridum, 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- The stratigraphy of the Atherfield Clay Formation (Lower Aptian, Lower Cretaceous) at the type and other localities in southern England2
- The stratigraphical palaeontology of the Lower Greensand1
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. 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 content0
No picture of Roloboceras horridum was found. Wikipedia, Wikidata and iDigBio were searched and had none.
Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Roloboceras horridum, or no answer at all. This entry cannot say which.
No 3D scan of Roloboceras horridum 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 itRoloboceras through timeFormations of the Early CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Spath 1930