Demania

Demania is a genus of crabs in the family Xanthidae, containing the following species:

Demania

SSR2000 · 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
XanthinaePBDB
Diet
carnivorePBDB, for Decapoda
Life habit
infaunalPBDB, for Xanthoidea
Motility
actively mobilePBDB, for Malacostraca
Vision
well-developedPBDB, for Malacostraca

Time the record covers

At most 1.9 million years on record.

Every occurrence read is dated to somewhere between 2.58 Mya and 774 ka, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Pliocene — about 0 of 2 occurrencesPleistocene — about 2 of 2 occurrencesPleistocene2.6–2.5 Mya — about 0.1 occurrences2.5–2.4 Mya — about 0.1 occurrences2.4–2.3 Mya — about 0.1 occurrences2.3–2.2 Mya — about 0.1 occurrences2.2–2.1 Mya — about 0.1 occurrences2.1–2.1 Mya — about 0.1 occurrences2.1–2.0 Mya — about 0.1 occurrences2.0–1.9 Mya — about 0.1 occurrences1.9–1.8 Mya — about 0.1 occurrences1.8–1.7 Mya — about 0.1 occurrences1.7–1.6 Mya — about 0.1 occurrences1.6–1.5 Mya — about 0.1 occurrences1.5–1.4 Mya — about 0.1 occurrences1.4–1.3 Mya — about 0.1 occurrences1.3–1.2 Mya — about 0.1 occurrences1.2–1.1 Mya — about 0.1 occurrences1.1–1.0 Mya — about 0.1 occurrences1.0–929 ka Mya — about 0.1 occurrences929 ka–835 ka Mya — about 0.1 occurrences835 ka–742 ka Mya — about 0.1 occurrences3.08 Mya274 ka

2 occurrences of Demania on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

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

Mandog — 7.07°N, 125.57°E

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The named rock units Demania has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Demania and its relatives

Pleistocene

Where Demania and its relatives were recorded in the Pleistocene.

Found in the same rock

12 taxa

The Paleobiology Database records 1 site for Demania, 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 reference

Each 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 Demania

Credit
SSR2000
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Demania 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 itXanthinae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Laurie 1906