Bursa
Searched as Bursa chira yasila. The Paleobiology Database treats Bursa as the accepted name.
Bursa is a genus of large sea snails, marine gastropod molluscs in the family Bursidae, the frog snails or frog shells.

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
- BursidaePBDB
- Diet
- carnivorePBDB, for Bursidae
- Life habit
- epifaunalPBDB, for Bursidae
- Motility
- actively mobilePBDB, for Bursidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At most 3.4 million years on record.
The one occurrence read is dated to somewhere between 41.03 Mya and 37.71 Mya, which is a dating window rather than a span.
1 occurrence of Bursa on record, most of them in the Eocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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
1 occurrences- Eocene100%
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
1 formation
Loading coastlines…
The named rock units Bursa has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Bursa and its relatives
EoceneWhere Bursa and its relatives were recorded in the Eocene.
Found in the same rock
2,301 taxa- Conus19 sites
- Cerithium10 sites
- Cassis sulcifera9 sites
- Terebra9 sites
- Turritella9 sites
- Chicoreus (Triplex) cornurectus8 sites
- Fusinus8 sites
- Polinices8 sites
- Strioterebrum8 sites
- Exilia dickersoni7 sites
- Latirus7 sites
- Natica7 sites
- Ostrea7 sites
- Rhinoclavis (Ochetoclava)7 sites
- Sconsia laevigata7 sites
- Turricula7 sites
- Dentalium stramineum6 sites
- Distorsio simillima6 sites
- Gemmula6 sites
- Lyria (Lyria) pulchella6 sites
- Mitra6 sites
- Murex6 sites
- Nassarius6 sites
- Polinices (Euspira) nuciformis6 sites
The Paleobiology Database records 61 sites for Bursa, 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
1 referenceEach of the 1 occurrence 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 content2
Picture of Bursa
- Source
- Wikipedia/Commons
- Credit
- Jan Delsing
- Licence
- Public Domain
- Commercial use
- the licence allows it
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 itBursidae through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Roding 1798