Pseudophalacroma
No picture of Pseudophalacroma 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 Pseudophalacroma, 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 1 million years on record.
The record covers at least 500.5 Mya to 499.5 Mya. No occurrence read is dated outside 506.5 Mya to 497 Mya.
56 occurrences of Pseudophalacroma 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
56 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
13 formations
- Huaqiao Formation25
- Zhumabai Formation8
- Yangliugang Formation7
- Aktas Formation6
- Devoncourt Limestone Formation2
- Karsha Formation1
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The named rock units Pseudophalacroma has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Pseudophalacroma and its relatives
CambrianWhere Pseudophalacroma and its relatives were recorded in the Cambrian.
Found in the same rock
241 taxa- Hypagnostus parvifrons6 sites
- Tomagnostella exsculpta6 sites
- Acidusus aculeatus4 sites
- Ammagnostus laiwuensis4 sites
- Hypagnostus brevifrons4 sites
- Hypagnostus truncatus4 sites
- Linnarssonia4 sites
- Tomagnostella sulcifera4 sites
- Ammagnostus incertus3 sites
- Ammagnostus spinosus3 sites
- Diplagnostus pyriformis3 sites
- Goniagnostus nathorsti3 sites
- Goniagnostus spiniger3 sites
- Lejopyge laevigatus3 sites
- Linnarssonia captiosa3 sites
- Linnarssonia ophirensis3 sites
- Lisogoragnostus mictus3 sites
- Micromitra3 sites
- Peronopsis3 sites
- Peronopsis (Svenax) pusillus3 sites
- Peronopsis fallax3 sites
- Pseudoperonopsis karatauensis3 sites
- Acadagnostus acadica2 sites
- Agnostus artilimbatus2 sites
The Paleobiology Database records 12 sites for Pseudophalacroma, 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
13 references- Agnostid biostratigraphy across the Middle-Upper Cambrian boundary in Hunan, China18
- Ergaliev and Ergaliev, 200814
- The Cambrian trilobites of western Zhejiang7
- The Global Boundary Stratotype Section and Point (GSSP) of the Guzhangian Stage (Cambrian) in the Wuling Mountains, northwestern Hunan, China5
- Revision of the Cambrian Agnostina (Trilobita?) from Russia2
- Middle Cambrian stratigraphy and trilobite fauna of Taoyuan, NW Hunan2
- The Geology and palaeontology of the Headwaters of the Burke River, Queensland2
- Miaolingian (Cambrian) agnostids and trilobites from the Cobb Valley area, South Island, New Zealand1
- The diverse radiodont fauna from the Marjum Formation of Utah, USA (Cambrian: Drumian)1
- A highly diverse trilobite fauna with Avalonian affinities from the Middle Cambrian Acidusus atavus Zone (Drumian Stage) of Bornholm, Denmark1
- Cambrian Trilobites from the Parahio and Zanskar Valleys, Indian Himalaya1
- Agnostoid trilobites from the Henson Gletscher and Kap Stanton formations (Middle Cambrian), North Greenland1
Each of the 56 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. 1 further reference is 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 Pseudophalacroma 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 Pseudophalacroma, or no answer at all. This entry cannot say which.
No 3D scan of Pseudophalacroma was found in MorphoSource and Sketchfab.
Smithsonian Open Access was 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. Pokrovskaya 1958