Stramonita chocolata
Thaisella chocolata is a species of sea snail, a marine gastropod mollusk, in the family Muricidae, the murex snails or rock snails.

Duclos, 1832 · CC0 · via Wikidata/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
- StramonitaPBDB
- Diet
- carnivorePBDB, for Muricidae
- Life habit
- epifaunalPBDB, for Muricidae
- Motility
- actively mobilePBDB, for Muricidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 3.5 million years on record.
The record covers at least 3.6 Mya to 11.7 ka. No occurrence read is dated outside 5.333 Mya to 0 Mya.
15 occurrences of Stramonita chocolata on record, most of them in the Pleistocene. 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
15 occurrences- Pliocene27%
- Pleistocene67%
- Holocene7%
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
6 formations
- Mancora Tablazo Formation3
- Estratos de Caldera Formation2
- Mare Formation · Cabo Blanco Group1
- Pampa del Palo Terrace Formation1
- San Juan Terrace Formation1
- Pongo Formation1
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The named rock units Stramonita chocolata has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.
Stramonita chocolata and its relatives
PleistoceneWhere Stramonita chocolata and its relatives were recorded in the Pleistocene.
Found in the same rock
219 taxa- Argopecten purpuratus6 sites
- Oliva peruviana6 sites
- Choromytilus chorus4 sites
- Glycymeris4 sites
- Turritella gonostoma4 sites
- Undulostrea megodon4 sites
- Anomia peruviana3 sites
- Balanus3 sites
- Chama pellucida3 sites
- Concholepas concholepas3 sites
- Crucibulum3 sites
- Echinoidea3 sites
- Incatella cingulata3 sites
- Larkinia grandis3 sites
- Leukoma thaca3 sites
- Ostrea3 sites
- Retrotapes lenticularis3 sites
- Sinum3 sites
- Tegula tridentata3 sites
- Argopecten ventricosus2 sites
- Balanus tintinnabulum concinnum2 sites
- Calyptraea trochiformis2 sites
- Cetacea2 sites
- Chione compta2 sites
The Paleobiology Database records 12 sites for Stramonita chocolata, 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
8 references- Three new Pliocene species of Stramonita Schumacher, 1817 (Murcidae: Rapaninae) from Western South America and the evolution of modern Stramonita chocolata (Duclos, 1832)4
- Geology of the Quaternary Period, on a part of the Pacific Coast of Peru3
- Carta Caldera, Región de Atacama. Servicio Nacional de Geología y Minería, Carta Geológica de Chile, Serie Geología Básica, No. 76, 38 p. 1 mapa escala 1:100.0002
- Occurrence de Chione broggi (Pilsbry & Olsson, 1943) (Pelecypoda) en depositos litorales cuaternarios del sur del Peru: implicaciones paleoceanograficas2
- Lithostratigraphy and Biostratigraphy of Pliocene and Pleistocene Marine Deposits and Age of the highest Marine Terrace from the Sacaco Basin and its Environs (southern Peru)1
- Thermally-anomalous Holocene molluscan assemblages from coastal Peru: evidence for paleogeographic, not climatic change1
- Late Cenozoic gastropods from northern Venezuela1
- Pleistocene Geology and Paleontology of the Talara Region, Northwest Peru1
Each of the 15 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 Stramonita chocolata
- Source
- Wikidata/Commons
- Credit
- Duclos, 1832
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Stramonita chocolata 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.
The description on this site
- 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 itStramonita through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Duclos 1832)