Thyca
Thyca is a genus of small sea snails, marine gastropod mollusks in the family Eulimidae. These snails are ectoparasites of starfish; they are relatively unmodified, the underside having become a suction disc with a central mouth that draws nourishment from the host's tissues.
Jan Delsing · Public Domain · 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
- EulimidaePBDB
- Diet
- carnivorePBDB, for Eulimidae
- Life habit
- epifaunalPBDB, for Eulimidae
- Motility
- actively mobilePBDB, for Eulimidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 8.4 million years on record.
The record covers at least 13.82 Mya to 5.333 Mya. No occurrence read is dated outside 15.98 Mya to 3.6 Mya.
3 occurrences of Thyca on record, most of them in the Miocene. 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
3 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
2 formations
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The named rock units Thyca has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Thyca and its relatives
MioceneWhere Thyca and its relatives were recorded in the Miocene.
Found in the same rock
252 taxa- Leiostraca3 sites
- Pseudotorinia3 sites
- Thericium3 sites
- Alvania2 sites
- Aporrhais2 sites
- Architectonica (Architectonica)2 sites
- Balcis2 sites
- Bittium (Semibittium)2 sites
- Bursa scrobilator2 sites
- Calyptraea (Bicatillus)2 sites
- Calyptraea chinensis2 sites
- Capulus ungaricus2 sites
- Cerithiopsis2 sites
- Cerithium (Ptychocerithium)2 sites
- Cingula2 sites
- Clathrus2 sites
- Cochlis tigrina2 sites
- Crepidula (Janacus) crepidula2 sites
- Crepidula gibbosa2 sites
- Cypraecassis2 sites
- Erato elongata2 sites
- Ficus (Ficus)2 sites
- Fossarus2 sites
- Malea2 sites
The Paleobiology Database records 3 sites for Thyca, 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- Les Mesogastropoda Fossiles du Cenozoïque étranger des Collections de L'Institute Royale des Sciences Naturelles de Belgique2
- Middle Miocene (Badenian) gastropods from Korytnica, Poland; Part II1
Each of the 3 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1
Picture of Thyca
- Source
- Wikipedia/Commons
- Credit
- Jan Delsing
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Thyca 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
- Source
- Wikipedia, “Thyca”
- 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 itEulimidae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Adams and A 1854