Pachydiscus (Pachydiscus)
No picture of Pachydiscus (Pachydiscus) 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 Pachydiscus (Pachydiscus), or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- PachydiscusPBDB
- Diet
- carnivorePBDB, for Ammonoidea
- Life habit
- nektonicPBDB, for Ammonoidea
- Motility
- fast-movingPBDB, for Ammonoidea
- Vision
- well-developedPBDB, for Cephalopoda
- Environment
- marinePBDB, for Cephalopoda
Time the record covers
At least 11 million years on record.
The record covers at least 83.6 Mya to 72.2 Mya. No occurrence read is dated outside 86.1 Mya to 66 Mya.
194 occurrences of Pachydiscus (Pachydiscus) on record, most of them in the Late Cretaceous. 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
194 occurrences- Late Cretaceous100%
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
48 formations
- Lopez de Bertodano Formation18
- Matanuska Formation18
- Miria Formation14
- Kaguyak Formation8
- Moreno Formation · Great Valley Group7
- Quiriquina Formation7
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The named rock units Pachydiscus (Pachydiscus) has been recovered from, largest first. Drawn where the rock is now, not where it formed. 24 further formations hold fewer occurrences each and are not listed. 44 occurrences have no formation on record, which is common for older literature.
Pachydiscus (Pachydiscus) and its relatives
Late CretaceousWhere Pachydiscus (Pachydiscus) and its relatives were recorded in the Late Cretaceous.
Found in the same rock
806 taxa- Diplomoceras cylindraceum26 sites
- Pseudophyllites indra20 sites
- Desmophyllites diphylloides16 sites
- Menuites fresvillensis15 sites
- Baculites14 sites
- Grossouvrites joharae13 sites
- Maorites densicostatus13 sites
- Phyllopachyceras forbesianum13 sites
- Eubaculites carinatus12 sites
- Gunnarites kalika11 sites
- Hoploscaphites constrictus11 sites
- Hypophylloceras (Neophylloceras) surya11 sites
- Baculites anceps9 sites
- Kitchinites spathi9 sites
- Gaudryceras kayei8 sites
- Inoceramus8 sites
- Inoceramus subundatus8 sites
- Grossouvrites gemmatus7 sites
- Hoploscaphites7 sites
- Baculites claviformis6 sites
- Baculites vertebralis6 sites
- Didymoceras hornbyense6 sites
- Hypophylloceras (Neophylloceras) ramosum6 sites
- Nostoceras6 sites
The Paleobiology Database records 173 sites for Pachydiscus (Pachydiscus), 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
51 references- Upper Cretaceous (Campanian and Maestrichtian) ammonites from southern Alaska27
- Campanian and Maastrichtian ammonites from northern Aquitaine, France17
- Late Campanian-Maastrichtian ammonite fauna from Seymour Island (Antarctic Peninsula)15
- Maastrichtian Non-Heteromorph Ammonites from the Miria Formation, Western Australia14
- Les ammonites spiralées du Campanien et du Maastrichtien de Tercis les Bains (Landes, France)13
- Upper Cretaceous ammonites of California. Part III10
- Ammonites from the Maastrichtian (Upper Cretaceous) Quiriquina Formation in central Chile7
- Maastrichtian ammonites from the United Arab Emirates-Oman border region5
- The larger invertebrate fossils of the Navarro group of Texas5
- Parapuzosia (Parapuzosia) seppenradensis (Landois) und die Ammonitenfauna der Dülmener Schichten, unteres Unter-Campan, Westfalen4
- Ammonite faunas, biostratigraphy, and sequence stratigraphy of the Coniacian-Santonian of the Corbières (NE Pyrénées)4
- Ammonites from the Maastrichtian White Chalk of Denmark4
Each of the 194 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. 39 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
3D model
- Source
- Sketchfab
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
No picture of Pachydiscus (Pachydiscus) 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 Pachydiscus (Pachydiscus), or no answer at all. This entry cannot say which.
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 itPachydiscus through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Zittel 1884