Chemnitzia
Turbonilla is a large genus of ectoparasitic sea snails, marine gastropod molluscs in the family Pyramidellidae, the pyrams and their allies.

Shellnut · 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
- PyramidellidaePBDB
- Diet
- carnivorePBDB, for Pyramidellidae
- Life habit
- epifaunalPBDB, for Pyramidellidae
- Motility
- actively mobilePBDB, for Pyramidellidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 241 million years on record.
The record covers at least 241.464 Mya to 11.7 ka. No occurrence read is dated outside 247 Mya to 0 Mya.
86 occurrences of Chemnitzia on record, most of them in the Pliocene. The Paleobiology Database records this as a living group. 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
86 occurrences- Middle Triassic7%
- Late Triassic9%
- Early Jurassic2%
- Middle Jurassicunder 1%
- Late Cretaceous1%
- Paleocene2%
- Eocene5%
- Miocene20%
- Pliocene27%
- Pleistocene23%
- Holocene3%
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
36 formations
- Dry Creek Sands Formation8
- Coralline Crag Formation7
- James City Formation5
- Unnamed Formation3
- Discovery Point Formation3
- Sakishima Formation3
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The named rock units Chemnitzia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 further formations hold fewer occurrences each and are not listed. 14 occurrences have no formation on record, which is common for older literature.
Chemnitzia and its relatives
PlioceneWhere Chemnitzia and its relatives were recorded in the Pliocene.
Found in the same rock
2,329 taxa- Nucula10 sites
- Ostrea10 sites
- Turbonilla (Pyrgiscus)10 sites
- Abra aequalis9 sites
- Balanus9 sites
- Odostomia9 sites
- Polinices9 sites
- Acteon8 sites
- Nuculana8 sites
- Turritella8 sites
- Brachyura7 sites
- Conradostrea sculpturata7 sites
- Nucula (Nucula) proxima7 sites
- Nuculana acuta7 sites
- Cerithium6 sites
- Chrysallida6 sites
- Cliona6 sites
- Crepidula fornicata6 sites
- Crepidula plana6 sites
- Dentalium6 sites
- Hiatella arctica6 sites
- Modiolus6 sites
- Mulinia lateralis6 sites
- Nassarius antillarum6 sites
The Paleobiology Database records 49 sites for Chemnitzia, 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
42 references- Unpublished notes on Caribbean collection of the Naturhistorisches Museum Basel8
- The molluscan fauna of the Pliocene strata underlying the Adelaide Plains. Part IV - Gastropoda (Turritellidae-Struthiolariidae)8
- Wood, 18487
- Moluscos de la Formación Agueguexquite (Plioceno inferior) de Coatzacoalcos, Veracruz, México3
- Checklist of megafossils from the James City Formation (Lower Pleistocene) at Johnson Point, Craven County, North Carolina3
- Invertebrate megafossils of Pleistocene (Sangamon Interglacial) age from Isla de Guadalupe, Baja California, Mexico3
- Pleistocene molluscan fauna of the Sakishima Formation, Shima Peninsula, central Japan3
- Geology of San Nicolas Island, California3
- I fossile del Monte Vaticano3
- Géologie et paléontologie des couches à Avicula contorta en Lombardie3
- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals2
- Unpublished notes on Caribbean collection of Jack and Winifred Gibson-Smith, Naturhistorisches Museum Basel2
Each of the 86 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. 30 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 Chemnitzia
- Source
- Wikipedia/Commons
- Credit
- Shellnut
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Chemnitzia 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.
The description on this site
- Source
- Wikipedia, “Turbonilla”
- 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 itPyramidellidae through timeFormations of the PlioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (d'Orbigny 1840)