Ptychagnostus intermedius
No picture of Ptychagnostus intermedius was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Ptychagnostus intermedius, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- PtychagnostusPBDB
- Diet
- suspension feederPBDB, for Ptychagnostus
- Life habit
- nektonicPBDB, for Ptychagnostus
- Motility
- actively mobilePBDB, for Ptychagnostus
- Vision
- blindPBDB, for Ptychagnostidae
Time the record covers
At least 800 thousand years on record.
The record covers at least 505.3 Mya to 504.5 Mya. No occurrence read is dated outside 509.7 Mya to 497 Mya.
22 occurrences of Ptychagnostus intermedius on record, most of them in the Cambrian. 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
22 occurrences- Cambrian100%
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
11 formations
- Wheeler Formation6
- Aktas Formation6
- Blacksmith Formation2
- Wheeler Shale Formation1
- Shallow Bay Formation · Cow Head Group1
- Inca Formation1
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The named rock units Ptychagnostus intermedius has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Ptychagnostus intermedius and its relatives
CambrianWhere Ptychagnostus intermedius and its relatives were recorded in the Cambrian.
Found in the same rock
50 taxa- Triplagnostus gibbus7 sites
- Peronopsis fallax6 sites
- Elrathia5 sites
- Peronopsis5 sites
- Ptychoparella5 sites
- Itagnostus interstrictus4 sites
- Ptychagnostus seminula3 sites
- Bathyuriscus2 sites
- Dictyonina2 sites
- Doryagnostus wasatchensis2 sites
- Elrathina2 sites
- Kotylotreta undata2 sites
- Olenoides2 sites
- Tomagnostus2 sites
- Zacanthoides2 sites
- Acadagnostus acadica1 site
- Aksarinaia triquetra1 site
- Archeoentactinia hexactinia1 site
- Archeoentactinia incaensis1 site
- Archeoentactinia tetractinia1 site
- Bolaspidella1 site
- Chancia1 site
- Corynexochina1 site
- Diplorrhina1 site
The Paleobiology Database records 14 sites for Ptychagnostus intermedius, 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
9 references- Ergaliev and Ergaliev, 20086
- Some Middle Cambrian agnostoid trilobites from Western North America5
- Potential Global Standard Stratotype-section and Point (GSSP) for a Cambrian stage boundary defined by the first appearance of the trilobite Ptychagnostus atavus, Drum Mountains, Utah, USA4
- Origin, taxonomy, and homeomorphs of Doryagnostus (Cambrian Trilobita)2
- Biofacies de trilobites cámbricos en la Formación Alojamiento, Precordillera de San Juan y Mendoza, Argentina. Ameghiniana, 44 (1):91-107. Buenos Aires1
- Base of Ptychagnostus atabus Zone, candidate stratotype for base of unnamed international series1
- Cambrian Radiolaria from the Georgina Basin, Queensland, Australia1
- Agnostoid trilobites from the Henson Gletscher and Kap Stanton formations (Middle Cambrian), North Greenland1
- Mid-Cambrian trilobites from the lowest part of the Cow Head Group, western Newfoundland1
Each of the 22 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 content0
No picture of Ptychagnostus intermedius was found. Wikipedia, Wikidata and iDigBio were searched and had none.
Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Ptychagnostus intermedius, or no answer at all. This entry cannot say which.
No 3D scan of Ptychagnostus intermedius 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 itPtychagnostus through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Tullberg 1880)