Cucullaea (Idonearca) youngi
Not Cucullaea (Idonearca) youngi. This is Cucullaea youngi (Waring, 1917), a relative — both are Cucullaeidae.
W. P. Popenoe · CC0 · 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
- Cucullaea (Idonearca)PBDB
- Diet
- suspension feederPBDB, for Cucullaea
- Life habit
- infaunalPBDB, for Cucullaea
- Motility
- facultatively mobilePBDB, for Cucullaea
- Vision
- limitedPBDB, for Cucullaeidae
Time the record covers
At most 35 million years on record.
Every occurrence read is dated to somewhere between 100.5 Mya and 66 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
28 occurrences of Cucullaea (Idonearca) youngi 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
28 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
5 formations
- Ladd Formation15
- Chatsworth Formation6
- Williams Formation5
- Chico Formation · Asuncion Group1
- Tuna Canyon Formation1
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The named rock units Cucullaea (Idonearca) youngi has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Cucullaea (Idonearca) youngi and its relatives
Late CretaceousWhere Cucullaea (Idonearca) youngi and its relatives were recorded in the Late Cretaceous.
Found in the same rock
144 taxa- Glycymerita veatchii24 sites
- Pterotrigonia evansana19 sites
- Paraesa lens17 sites
- Turritella chicoensis16 sites
- Biplica obliqua13 sites
- Acila (Truncacila) demessa12 sites
- Tenea inflata11 sites
- Calva (Egelicalva) bowersiana10 sites
- Crassatella lomana10 sites
- Lysis suciensis10 sites
- Trinacria cor10 sites
- Cymbophora ashburnerii9 sites
- Volutoderma santana9 sites
- Anomia lineata8 sites
- Etea angulata8 sites
- Polinices shumardianus8 sites
- Clisocolus cordatus7 sites
- Perissitys brevirostris7 sites
- Baculites chicoensis6 sites
- Cymbophora gabbiana6 sites
- Nanonavis breweriana6 sites
- Pentzia hilgardi6 sites
- Anchura phaba5 sites
- Cymbophora popenoei5 sites
The Paleobiology Database records 28 sites for Cucullaea (Idonearca) youngi, 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
5 references- Upper Cretaceous formations and faunas of southern California24
- Geology of the Northern Santa Ana Mountains, California1
- Upper Cretaceous of the Pacific Coast1
- Geology of the eastern part of the Santa Monica Mountains, Los Angeles County, California1
- Stratigraphic and faunal relations of the Martinez to the Chico and Tejon of Southern California1
Each of the 28 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 content1
Picture of Cucullaea youngi (Waring, 1917)
- Source
- GBIF
- Credit
- W. P. Popenoe
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Cucullaea (Idonearca) youngi 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 itCucullaea (Idonearca) through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Waring 1917)