Monotis (Pacimonotis) subcircularis

Monotis subcircularis Gabb, 1864, a relative of Monotis (Pacimonotis) subcircularis — not Monotis (Pacimonotis) subcircularis itself

Not Monotis (Pacimonotis) subcircularis. This is Monotis subcircularis Gabb, 1864, a relative — both are Monotidae.

Hoffstetter, Robert Julien · CC BY 4.0 · via GBIF. 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
Monotis (Pacimonotis)PBDB
Diet
suspension feederPBDB, for Pectinida
Life habit
epifaunalPBDB, for Pectinida
Motility
stationaryPBDB, for Monotidae
Vision
blindPBDB, for Bivalvia
Environment
marinePBDB, for Pectinida

Time the record covers

At most 36 million years on record.

Every occurrence read is dated to somewhere between 237 Mya and 201.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Middle Triassic — about 0 of 24 occurrencesLate Triassic — about 24 of 24 occurrencesLate TriassicEarly Jurassic — about 0 of 24 occurrences238–236 Mya — about 0.0 occurrences236–235 Mya — about 0.1 occurrences235–234 Mya — about 0.1 occurrences234–233 Mya — about 0.1 occurrences233–232 Mya — about 0.1 occurrences232–230 Mya — about 0.1 occurrences230–229 Mya — about 0.1 occurrences229–228 Mya — about 0.1 occurrences228–227 Mya — about 0.5 occurrences227–225 Mya — about 0.7 occurrences225–224 Mya — about 0.7 occurrences224–223 Mya — about 0.7 occurrences223–222 Mya — about 0.7 occurrences222–220 Mya — about 0.7 occurrences220–219 Mya — about 0.7 occurrences219–218 Mya — about 0.7 occurrences218–217 Mya — about 0.7 occurrences217–215 Mya — about 0.7 occurrences215–214 Mya — about 0.7 occurrences214–213 Mya — about 0.7 occurrences213–212 Mya — about 0.7 occurrences212–211 Mya — about 2 occurrences211–209 Mya — about 3 occurrences209–208 Mya — about 3 occurrences208–207 Mya — about 3 occurrences207–206 Mya — about 3 occurrences206–204 Mya — about 0.1 occurrences204–203 Mya — about 0.1 occurrences203–202 Mya — about 0.1 occurrences202–201 Mya — about 0.0 occurrences237.7 Mya200.7 Mya

24 occurrences of Monotis (Pacimonotis) subcircularis on record, most of them in the Late 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

24 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

7 formations

Pardonet — 56.48°N, 122.93°WPardonet — 56.02°N, 123.09°WPardonet — 56.09°N, 123.04°WPardonet — 56.10°N, 122.87°WPardonet — 55.50°N, 122.68°WOtuk — 68.29°N, 165.64°WOtuk — 68.57°N, 155.77°WKamishak — 57.72°N, 155.30°WKamishak — 57.71°N, 155.38°WHound Island Volcanics — 56.90°N, 133.83°WHound Island Volcanics — 56.82°N, 133.98°WMcCarthy — 61.67°N, 142.67°WPotranca — 45.47°S, 74.13°WRail Cabin Argillite — 44.06°N, 119.45°W

Loading coastlines…

The named rock units Monotis (Pacimonotis) subcircularis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Monotis (Pacimonotis) subcircularis and its relatives

Late Triassic

Where Monotis (Pacimonotis) subcircularis and its relatives were recorded in the Late Triassic.

Found in the same rock

27 taxa

The Paleobiology Database records 20 sites for Monotis (Pacimonotis) subcircularis, 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

7 references

Each of the 24 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 Monotis subcircularis Gabb, 1864

Source
GBIF
Credit
Hoffstetter, Robert Julien
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Monotis (Pacimonotis) subcircularis 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 itMonotis (Pacimonotis) through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Gabb 1864)