Ptychites trochleaeformis

via iDigBio · 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
- PtychitesPBDB
- 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 6.5 million years on record.
Every occurrence read is dated to somewhere between 243.43 Mya and 237 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
10 occurrences of Ptychites trochleaeformis 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
10 occurrences- Middle Triassic100%
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
6 formations
- Botneheia Formation · Sassendalen Group4
- Sulphur Mountain Formation2
- Schei Point Formation1
- Rifu Formation1
- Toad Formation1
- Bravaisberget Formation · Sassendalen Group1
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The named rock units Ptychites trochleaeformis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Ptychites trochleaeformis and its relatives
Middle TriassicWhere Ptychites trochleaeformis and its relatives were recorded in the Middle Triassic.
Found in the same rock
27 taxa- Frechites laqueatus4 sites
- Eogymnotoceras deleeni3 sites
- Parapopanoceras malmgreni3 sites
- Daonella2 sites
- Daonella (Arzelella) frami2 sites
- Daonella (Arzelella) indica2 sites
- Daonella subarctica2 sites
- Daonella subtenuis2 sites
- Monophyllites sp.2 sites
- Amphipopanoceras tetsa1 site
- Anagymnites acutus1 site
- Choanoteuthis hatai1 site
- Daonella lindstroemi1 site
- Epigymnites jollyanus1 site
- Flexoptychites matsushimaensis1 site
- Hungarites nipponicus1 site
- Japonites dieneri1 site
- Japonites readi1 site
- Monophyllites wengensis1 site
- Neogondolella1 site
- Parafrechites1 site
- Protrachyceras1 site
- Ptychites miyagiensis1 site
- Ptychites nipponicus1 site
The Paleobiology Database records 10 sites for Ptychites trochleaeformis, 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
5 references- Canadian Triassic Ammonoid Faunas4
- Stratigraphy and ammonoids from the Middle Triassic Botneheia Formation (Daonella shales) of Spitsbergen2
- Stratigraphy and composition of the Mesozoic deposits in central Vestspitsbergen2
- Intercalibration of Boreal and Tethyan time scales: the magnetobiostratigraphy of the Middle Triassic and the latest Early Triassic from Spitsbergen, Arctic Norway1
- The Triassic stratigraphy and ammonite fauna of Japan1
Each of the 10 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 Ptychites trochleaeformis
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itPtychites through timeFormations of the Middle TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Lindstroem 1865)