Protrachyceras sikanianum

Protrachyceras sikanianum

via iDigBio · CC BY-NC-SA · 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
ProtrachycerasPBDB
Diet
carnivorePBDB, for Ceratitida
Life habit
nektonicPBDB, for Ceratitida
Motility
actively mobilePBDB, for Ceratitida
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At most 4.5 million years on record.

Every occurrence read is dated to somewhere between 241.464 Mya and 237 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Middle Triassic — about 26 of 26 occurrencesMiddle TriassicLate Triassic — about 0 of 26 occurrences242–241 Mya — about 0.0 occurrences241–241 Mya — about 0.2 occurrences241–241 Mya — about 0.2 occurrences241–241 Mya — about 0.2 occurrences241–241 Mya — about 0.2 occurrences241–241 Mya — about 0.2 occurrences241–240 Mya — about 0.2 occurrences240–240 Mya — about 0.2 occurrences240–240 Mya — about 0.2 occurrences240–240 Mya — about 0.2 occurrences240–240 Mya — about 0.2 occurrences240–239 Mya — about 0.7 occurrences239–239 Mya — about 2 occurrences239–239 Mya — about 2 occurrences239–239 Mya — about 2 occurrences239–239 Mya — about 2 occurrences239–239 Mya — about 2 occurrences239–238 Mya — about 2 occurrences238–238 Mya — about 2 occurrences238–238 Mya — about 2 occurrences238–238 Mya — about 2 occurrences238–238 Mya — about 2 occurrences238–237 Mya — about 2 occurrences237–237 Mya — about 2 occurrences237–237 Mya — about 2 occurrences237–237 Mya — about 0.5 occurrences242 Mya236.5 Mya

26 occurrences of Protrachyceras sikanianum 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

26 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

Toad — 56.16°N, 122.59°WToad — 56.33°N, 122.74°WToad — 59.27°N, 125.38°WToad — 58.34°N, 124.37°WToad — 57.20°N, 123.26°WToad — 57.24°N, 123.39°WSulphur Mountain — 54.69°N, 121.00°WSulphur Mountain — 55.24°N, 122.10°WSulphur Mountain — 55.32°N, 122.23°WSulphur Mountain — 54.82°N, 121.33°WLiard — 59.28°N, 125.28°W

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The named rock units Protrachyceras sikanianum has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Protrachyceras sikanianum and its relatives

Middle Triassic

Where Protrachyceras sikanianum and its relatives were recorded in the Middle Triassic.

Found in the same rock

43 taxa

The Paleobiology Database records 25 sites for Protrachyceras sikanianum, 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

2 references

Each of the 26 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 Protrachyceras sikanianum

Source
iDigBio
Credit
via iDigBio
Licence
CC BY-NC-SA
Commercial use
the licence does not allow it

No 3D scan of Protrachyceras sikanianum 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 itProtrachyceras through timeFormations of the Middle TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. McLearn 1930