Cruziana semiplicata
No picture of Cruziana semiplicata was found. Wikipedia and Wikidata were searched and had none. iDigBio and GBIF were not searched: the Paleobiology Database does not place Cruziana semiplicata firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
On record
Recorded, not inferred- Sits inside
- CruzianaPBDB
Time the record covers
At least 450 thousand years on record.
The record covers at least 486.85 Mya to 486.4 Mya. No occurrence read is dated outside 497 Mya to 477.1 Mya.
4 occurrences of Cruziana semiplicata on record, most of them in the Ordovician. 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- Cambrian25%
- Ordovician75%
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
3 formations
- Beach Formation · Bell Island Group2
- Barrios Formation1
- Kellys Island Formation · Bell Island Group1
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The named rock units Cruziana semiplicata has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Cruziana semiplicata and its relatives
OrdovicianWhere Cruziana semiplicata and its relatives were recorded in the Ordovician.
Found in the same rock
40 taxa- Diplichnites2 sites
- Diplocraterion parallelum2 sites
- Planolites annularius2 sites
- Rusophycus dispar2 sites
- Rusophycus leifeirikssoni2 sites
- Skolithos verticalis2 sites
- Aulichnites1 site
- Bergaueria1 site
- Bergaueria perata1 site
- Bergaueria prantli1 site
- Calycraterion samsonowiczi1 site
- Conostichus1 site
- Cruziana billingsi1 site
- Cruziana breadstoni1 site
- Cruziana problematica1 site
- Didymaulichnus lyelli1 site
- Dimorphichnus obliquus1 site
- Furculosus carpathicus1 site
- Gyrolithes saxonicus1 site
- Helminthopsis abelli1 site
- Helminthopsis hieroglyphica1 site
- Helminthopsis tenuis1 site
- Lockeia siliquaria1 site
- Monocraterion tentaculatum1 site
The Paleobiology Database records 3 sites for Cruziana semiplicata, 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
2 references- Ichnology of the Upper Cambrian? to Lower Ordovician Bell Island and Wabana groups of eastern Newfoundland, Canada3
- First Furongian (late Cambrian) trilobites from the Cantabrian Zone (north-western Spain)1
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. 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 Cruziana semiplicata was found. Wikipedia and Wikidata were searched and had none.
iDigBio and GBIF were not searched: the Paleobiology Database does not place Cruziana semiplicata firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed.
Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
No 3D scan of Cruziana semiplicata 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 itCruziana through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Salter 1853