Kathwaia

Kathwaia is a genus of trilobite known from the late Permian of Pakistan. It is notable for being one of the five last-known trilobites.

Kathwaia

Apokryltaros · CC BY-SA 4.0 · 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
BollandiinaePBDB
Diet
deposit feederPBDB, for Proetida
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Phillipsiidae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 39 million years on record.

The record covers at least 293.52 Mya to 254.14 Mya. No occurrence read is dated outside 298.9 Mya to 251.902 Mya.

Carboniferous — about 0 of 6 occurrencesPermian — about 6 of 6 occurrencesPermianEarly Triassic — about 0 of 6 occurrences300–298 Mya — about 0.1 occurrences298–297 Mya — about 0.3 occurrences297–295 Mya — about 0.3 occurrences295–293 Mya — about 0.3 occurrences275–274 Mya — about 0.1 occurrences274–272 Mya — about 0.2 occurrences272–271 Mya — about 0.2 occurrences271–269 Mya — about 0.2 occurrences269–267 Mya — about 0.2 occurrences267–266 Mya — about 0.0 occurrences261–259 Mya — about 0.1 occurrences259–257 Mya — about 0.3 occurrences257–256 Mya — about 0.3 occurrences256–254 Mya — about 0.3 occurrences254–253 Mya — about 2 occurrences253–251 Mya — about 0.9 occurrences293.52 Mya254.14 Mya299.8 Mya251 Mya

6 occurrences of Kathwaia on record, most of them in the Permian. 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

6 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

3 formations

Wargal — 32.46°N, 72.22°EMarta — 44.72°N, 34.07°EFodele — 35.41°N, 24.78°E

Loading coastlines…

The named rock units Kathwaia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Kathwaia and its relatives

Permian

Where Kathwaia and its relatives were recorded in the Permian.

Found in the same rock

30 taxa

The Paleobiology Database records 6 sites for Kathwaia, 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

4 references

Each of the 6 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 Kathwaia

Credit
Apokryltaros
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Kathwaia was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itBollandiinae through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Grant 1966