Mariella (Plesioturrilites)

Not Mariella (Plesioturrilites). This is Plesioturrilites, a relative.
Whitney, F · 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
- MariellaPBDB
- 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 most 20 million years on record.
Every occurrence read is dated to somewhere between 113.2 Mya and 93.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
28 occurrences of Mariella (Plesioturrilites) 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 occurrencesThese 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
11 formations
- Grayson Marl Formation6
- Buda Limestone Formation4
- Del Rio Formation4
- Del Rio Clay Formation3
- Main Street Limestone Formation · Washita Group3
- Georgetown Formation2
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The named rock units Mariella (Plesioturrilites) has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Mariella (Plesioturrilites) and its relatives
Late CretaceousWhere Mariella (Plesioturrilites) and its relatives were recorded in the Late Cretaceous.
Found in the same rock
48 taxa- Graysonites wacoense7 sites
- Metengonoceras bravoense4 sites
- Yezoites subevolutus4 sites
- Budaiceras hyatti3 sites
- Graysonites adkinsi3 sites
- Neophlycticeras (Neophlycticeras) texanum3 sites
- Adkinsia bosquensis2 sites
- Budaiceras elegantior2 sites
- Cymatoceras hilli2 sites
- Graysonites2 sites
- Scaphites bosquensis2 sites
- Sciponoceras2 sites
- Stoliczkaia (Lamnayella) texana2 sites
- Texigryphaea mucronata2 sites
- Adkinsia knikerae1 site
- Algericeras proratum1 site
- Anisoceras perarmatum1 site
- Camptonectes virgatus1 site
- Cardium1 site
- Cyprimeria1 site
- Engonoceras retardum1 site
- Engonoceras serpentinum1 site
- Eoscaphites tenuicostatus1 site
- Exogyra1 site
The Paleobiology Database records 23 sites for Mariella (Plesioturrilites), 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
6 references- Upper Albian and Lower Cenomanian ammonites from the Main Street Limestone, Grayson Marl and Del Rio Clay in northeast Texas13
- Cretaceous ammonites from Texas and northern Mexico7
- Lower Cenomanian and Late Albian (Cretaceous) ammonites, especially Lyelliceridae, or Texas and Mexico5
- Ammonites from the Weno Limestone (Albian) in Northeast Texas1
- Cenomanian ammonites from the Sierra de Tlahualilo, Coahuila, Mexico1
- Cretaceous invertebrates of the Aurora Limestone1
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 Plesioturrilites
- Source
- GBIF
- Credit
- Whitney, F
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Mariella (Plesioturrilites) 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 itMariella through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0.