Nautilus macromphalus
Nautilus macromphalus, the bellybutton nautilus, is a species of nautilus native to the waters off New Caledonia and northeastern Australia. The shell of this species lacks a callus, leaving the umbilicus exposed, in which the inner coils of the shell are visible. This opening constitutes about 15% of the shell diameter at its widest point.
Pujolle · CC BY-SA 3.0 · via Wikipedia/Commons. 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
- NautilusPBDB
- Diet
- carnivorePBDB, for Nautilidae
- Life habit
- nektonicPBDB, for Nautilidae
- Motility
- actively mobilePBDB, for Nautilidae
- Vision
- well-developedPBDB, for Cephalopoda
- Environment
- marinePBDB, for Cephalopoda
Time the record covers
At most 12 thousand years on record.
Every occurrence read is dated to somewhere between 11.7 ka and 0 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 occurrences of Nautilus macromphalus on record, most of them in the Holocene. The Paleobiology Database records this as a living group. 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
2 occurrences- Holocene100%
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.
Nautilus macromphalus and its relatives
HoloceneWhere Nautilus macromphalus and its relatives were recorded in the Holocene.
Found in the same rock
1 taxon- Nautilus pompilius2 sites
The Paleobiology Database records 2 sites for Nautilus macromphalus, and this reads all of them. The number is how many of those sites it was catalogued from too.
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
1 referenceEach of the 2 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 Nautilus macromphalus
- Source
- Wikipedia/Commons
- Credit
- Pujolle
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Nautilus macromphalus 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.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itNautilus through timeFormations of the HoloceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Sowerby 1849