Triplagnostus
No picture of Triplagnostus was found. Wikidata and iDigBio were searched and had none. Wikipedia has a picture filed under this name, but nothing tied it to Triplagnostus itself, so it was not used. 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 Triplagnostus, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- PtychagnostidaePBDB
- Diet
- detritivorePBDB, for Agnostida
- Life habit
- epifaunalPBDB, for Agnostida
- Motility
- slow-movingPBDB, for Agnostida
- Vision
- blindPBDB, for Ptychagnostidae
Time the record covers
At least 2.3 million years on record.
The record covers at least 505.3 Mya to 503 Mya. No occurrence read is dated outside 509.7 Mya to 497 Mya.
48 occurrences of Triplagnostus 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
48 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
19 formations
- Wheeler Formation13
- Inca Formation9
- Huaqiao Formation3
- Yangliugang Formation3
- Kuonamka Formation2
- Wheeler Shale Formation2
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The named rock units Triplagnostus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Triplagnostus and its relatives
CambrianWhere Triplagnostus and its relatives were recorded in the Cambrian.
Found in the same rock
188 taxa- Peronopsis fallax17 sites
- Itagnostus interstrictus13 sites
- Ptychagnostus intermedius7 sites
- Ptychagnostus atavus6 sites
- Elrathia5 sites
- Peronopsis5 sites
- Ptychoparella5 sites
- Criotypus lemniscatus4 sites
- Ptychagnostus seminula4 sites
- Ptychagnostus sinicus4 sites
- Onymagnostus semiermis3 sites
- Pentagnostus (Meragnostus) segmenta3 sites
- Rhodotypiscus nasonis3 sites
- Zeteagnostus incautus3 sites
- Acadagnostus acadica2 sites
- Acidusus occultatus2 sites
- Chancelloria2 sites
- Diplorrhina2 sites
- Doryagnostus wasatchensis2 sites
- Elrathina2 sites
- Euagnostus2 sites
- Euagnostus opimus2 sites
- Hyolithes2 sites
- Hypagnostus2 sites
The Paleobiology Database records 35 sites for Triplagnostus, 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
20 references- 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, USA13
- Middle Cambrian agnostids: systematics and biostratigraphy.13
- Agnostid biostratigraphy across the Middle-Upper Cambrian boundary in Hunan, China3
- Ergaliev and Ergaliev, 20082
- Origin, taxonomy, and homeomorphs of Doryagnostus (Cambrian Trilobita)2
- Middle Cambrian (Wuliuan Stage) Small Shelly Fossils from North Greenland (Laurentia)1
- Middle Cambrian agnostoids and trilobites from the Lower Allochthon, Swedish Caledonides1
- The diverse radiodont fauna from the Marjum Formation of Utah, USA (Cambrian: Drumian)1
- Trilobites and biostratigraphy of the Kuonamka Formation, northern Siberian Platform (Olenek River)1
- Biostratigraphy of the Arthur Creek Formation and Thorntonia Limestone, Georgina Basin1
- Contact between Swassey Limestone and Wheeler Shale and the gibbus/atavus boundary1
- Base of Ptychagnostus atabus Zone, candidate stratotype for base of unnamed international series1
Each of the 48 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. 8 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 content0
No picture of Triplagnostus was found. Wikidata and iDigBio were searched and had none.
Wikipedia has a picture filed under this name, but nothing tied it to Triplagnostus itself, so it was not used.
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 Triplagnostus, or no answer at all. This entry cannot say which.
No 3D scan of Triplagnostus 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 itPtychagnostidae through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Howell 1935)