Arenorbis squamosus

Arenorbis squamosus

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
ArenorbisPBDB
Diet
detritivore, suspension feederPBDB, for Ophiuroidea
Life habit
low-level epifaunalPBDB, for Ophiuroidea
Motility
slow-movingPBDB, for Ophiuroidea
Vision
blindPBDB, for Ophiuroidea
Environment
marinePBDB, for Ophiuroidea

Time the record covers

At most 10 million years on record.

Every occurrence read is dated to somewhere between 247 Mya and 237 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Triassic — about 0 of 7 occurrencesMiddle Triassic — about 7 of 7 occurrencesMiddle TriassicLate Triassic — about 0 of 7 occurrences247–247 Mya — about 0.0 occurrences247–246 Mya — about 0.1 occurrences246–246 Mya — about 0.1 occurrences246–246 Mya — about 0.1 occurrences246–245 Mya — about 0.1 occurrences245–245 Mya — about 0.1 occurrences245–245 Mya — about 0.1 occurrences245–244 Mya — about 0.1 occurrences244–244 Mya — about 0.1 occurrences244–243 Mya — about 0.1 occurrences243–243 Mya — about 0.2 occurrences243–243 Mya — about 0.3 occurrences243–242 Mya — about 0.3 occurrences242–242 Mya — about 0.3 occurrences242–242 Mya — about 0.3 occurrences242–241 Mya — about 0.3 occurrences241–241 Mya — about 0.4 occurrences241–241 Mya — about 0.4 occurrences241–240 Mya — about 0.4 occurrences240–240 Mya — about 0.4 occurrences240–239 Mya — about 0.4 occurrences239–239 Mya — about 0.4 occurrences239–239 Mya — about 0.4 occurrences239–238 Mya — about 0.4 occurrences238–238 Mya — about 0.4 occurrences238–238 Mya — about 0.4 occurrences238–237 Mya — about 0.4 occurrences237–237 Mya — about 0.3 occurrences247.5 Mya236.5 Mya

7 occurrences of Arenorbis squamosus on record, most of them in the Middle Triassic. 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

7 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

Trochitenkalk — 49.32°N, 8.86°E

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The named rock units Arenorbis squamosus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Arenorbis squamosus and its relatives

Middle Triassic

Where Arenorbis squamosus and its relatives were recorded in the Middle Triassic.

Found in the same rock

28 taxa

The Paleobiology Database records 6 sites for Arenorbis squamosus, 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

6 references

Each of the 7 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 Arenorbis squamosus

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Arenorbis squamosus 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 itArenorbis through timeFormations of the Middle TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Picard 1858)