Architectonica (Architectonica) llajasensis

via GBIF · CC BY 4.0 · via GBIF. 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
- Architectonica (Architectonica)PBDB
- Diet
- carnivorePBDB, for Architectonicidae
- Life habit
- epifaunalPBDB, for Architectonicidae
- Motility
- actively mobilePBDB, for Architectonicidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At most 15 million years on record.
Every occurrence read is dated to somewhere between 56 Mya and 41.03 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
4 occurrences of Architectonica (Architectonica) llajasensis on record, most of them in the Eocene. 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
4 occurrences- Eocene100%
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
2 formations
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The named rock units Architectonica (Architectonica) llajasensis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Architectonica (Architectonica) llajasensis and its relatives
EoceneWhere Architectonica (Architectonica) llajasensis and its relatives were recorded in the Eocene.
Found in the same rock
56 taxa- Pachycrommium clarki3 sites
- Calyptraea diegoana2 sites
- Eocernina hannibali2 sites
- Turritella buwaldana2 sites
- Acila (Truncacila) decisa1 site
- Amaurellina caleocia1 site
- Ancilla (Spirancilla) gabbi1 site
- Architectonica (Stellaxis) cognata1 site
- Brachidontes (Brachidontes) cowlitzensis1 site
- Brachysphingus mammilatus1 site
- Calorebama dilleri lineata1 site
- Caryocorbula parilis1 site
- Cerithiopsis llajasensis1 site
- Clavilithes1 site
- Clavilithes tabulatus1 site
- Cochlespiropsis jenkinsi1 site
- Conus caleocius1 site
- Conus hornii umpquaensis1 site
- Corbula (Caryocorbula) dickersoni1 site
- Corsania (Januncia) susana1 site
- Crassatella uvasana1 site
- Cyclocorystes aldersoni1 site
- Cylichnina tantilla1 site
- Cymatium (Septa) janetae1 site
The Paleobiology Database records 4 sites for Architectonica (Architectonica) llajasensis, 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
3 references- Upper Paleocene to Lower Eocene ("Meganos Stage") Marine Megafossils in the Uppermost Santa Susana Formation, Simi Valley, Southern California2
- Megapaleontology of the Eocene Llajas Formation, Simi Valley, California1
- A new species of Architectonica from the Santa Susana Mountains, Ventura County, California1
Each of the 4 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1

Picture of Architectonica (Architectonica) llajasensis
- Source
- GBIF
- Credit
- via GBIF
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Architectonica (Architectonica) llajasensis 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 itArchitectonica (Architectonica) through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Sutherland 1966)