Ptilozamites
Ptilozamites is an extinct genus of pteridosperm, known from the Triassic and Early Jurassic of the Northern Hemisphere. It is associated with the pollen organ Harrisiothecium.

Ghedo · 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
- UmkomasiaceaePBDB
- Diet
- "photoautotroph"PBDB, for Streptophyta
Time the record covers
At least 68 million years on record.
The record covers at least 243.43 Mya to 174.7 Mya. No occurrence read is dated outside 247 Mya to 161.5 Mya.
76 occurrences of Ptilozamites 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
76 occurrencesThese 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
19 formations
- Cape Stewart Formation10
- Anyuan Formation6
- Mine Formation2
- Dajingkou Formation2
- Wenbinshan Formation2
- Yangmeilong Formation2
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The named rock units Ptilozamites has been recovered from, largest first. Drawn where the rock is now, not where it formed. 38 occurrences have no formation on record, which is common for older literature.
Ptilozamites and its relatives
Late TriassicWhere Ptilozamites and its relatives were recorded in the Late Triassic.
Found in the same rock
273 taxa- Pterophyllum37 sites
- Cladophlebis36 sites
- Clathropteris32 sites
- Podozamites31 sites
- Dictyophyllum30 sites
- Equisetites27 sites
- Nilsonia27 sites
- Neocalamites26 sites
- Taeniopteris26 sites
- Todites25 sites
- Baiera19 sites
- Lepidopteris17 sites
- Thaumatopteris17 sites
- Anomozamites16 sites
- Sphenobaiera15 sites
- Anthrophyopsis13 sites
- Zamites13 sites
- Ctenis12 sites
- Carpolithus11 sites
- Cycadocarpidium11 sites
- Ginkgoites11 sites
- Phlebopteris11 sites
- Sagenopteris11 sites
- Danaeopsis9 sites
The Paleobiology Database records 49 sites for Ptilozamites, 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
24 references- Stratigraphic relations of the plant beds10
- Taxonomical and palaeogeographic considerations on the seedfern genus Ptilozamites with some comments on Anomozamites, Dicroidium, Pseudoctenis and Ctenozamites9
- The Stratigraphic Tables of Sichuan8
- Regional Geology of Hunan Province6
- Regional Geology of Jiangxi Province6
- Triassic Floras of Eurasia6
- Triassic Floras of Eurasia5
- Regional Geology of Guangdong Province4
- Regional Geology of Fujian Province3
- Keuper (Triassic) Flora from Middle Asia (Madygen, Southern Fergana)2
- Regional Geology of Anhui Province2
- The Triassic System of Qinghai-Xizang Plateau2
Each of the 76 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. 12 further references are not listed. 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 Ptilozamites
- Source
- Wikipedia/Commons
- Credit
- Ghedo
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Ptilozamites 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.
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 itUmkomasiaceae through timeFormations of the Late TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Nathorst 1878