Psiloceratidae
Psiloceratidae is an extinct family of cephalopods belonging to the ammonite subclass.
Hectonichus · CC BY-SA 3.0 · 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
- PsiloceratoideaPBDB
- 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 4.9 million years on record.
The record covers at least 201.4 Mya to 196.5 Mya. No occurrence read is dated outside 237 Mya to 161.5 Mya.
758 occurrences of Psiloceratidae on record, most of them in the Early Jurassic. 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
758 occurrences- Late Triassicunder 1%
- Early Jurassic99%
- Middle Jurassicunder 1%
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
32 formations
- Last Creek Formation194
- Sandilands Formation · Kunga Group106
- Sunrise Formation55
- Fernie Formation28
- Chilingote Formation25
- Blue Lias Formation · Lias Group18
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The named rock units Psiloceratidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 further formations hold fewer occurrences each and are not listed. 200 occurrences have no formation on record, which is common for older literature.
Psiloceratidae and its relatives
Early JurassicWhere Psiloceratidae and its relatives were recorded in the Early Jurassic.
Found in the same rock
370 taxa- Badouxia canadensis62 sites
- Badouxia columbiae41 sites
- Discamphiceras silberlingi27 sites
- Paracaloceras rursicostatum27 sites
- Badouxia forticostata22 sites
- Sunrisites brimblecombei22 sites
- Eolytoceras tasekoi20 sites
- Phylloceras psilomorphum17 sites
- Psiloceras17 sites
- Togaticeras togatum14 sites
- Discamphiceras12 sites
- Sunrisites chilensis12 sites
- Franziceras kennecottense11 sites
- Kammerkarites frigga11 sites
- Vermiceras (Paracaloceras)11 sites
- Badouxia castlensis10 sites
- Discamphiceras antiquum10 sites
- Eolytoceras chongi10 sites
- Eolytoceras constrictum10 sites
- Sunrisites chilcotinensis10 sites
- Ectocentrites pacificus9 sites
- Pseudaetomoceras castagnolai9 sites
- Psiloceras tilmanni9 sites
- Alsatites proaries8 sites
The Paleobiology Database records 335 sites for Psiloceratidae, and this reads 240 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
56 references- Die Ammoniten-Fauna des südamerikanischen Hettangium (basaler Jura), Teil 1134
- The Early Jurassic ammonite Badouxia from British Columbia, Canada107
- Middle and late Hettangian (Early Jurassic) ammonites from the Queen Charlotte Islands, British Columbia, Canada90
- Ammonites hettangiennes de la Gabbs Valley Range (Nevada, USA)45
- The Triassic/Jurassic Boundary and Hettangian biostratigraphy in the area of the Utcubamba Valley (Northern Peru)40
- Three new species of the Hettangian (Early Jurassic) ammonite Sunrisites from British Columbia, Canada36
- Hettangian ammonite faunas of the Taseko Lakes area British Columbia35
- New Hettangian ammonite faunas and a Triassic Jurassic boundary succession, Fernie Formation, Williston Lake, British Columbia26
- Integrated ammonite biochronology and U-Pb geochronometry from a basal Jurassic section in Alaska21
- Late Hettangian (Early Jurassic) ammonites from Taseko Lakes, British Columbia, Canada20
- Early Hettangian ammonites and radiolarians from the Queen Charlotte Islands, British Columbia and their bearing on the definition of the Triassic-Jurassic boundary14
- On the oldest Jurassic ammonites of Europe (Northern Calcareous Alps, Austria) and their global significance12
Each of the 758 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. 44 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 Psiloceratidae
- Source
- Wikipedia/Commons
- Credit
- Hectonichus
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Psiloceratidae 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 itPsiloceratoidea through timeFormations of the Early JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hyatt 1867