Rhynchonelloidella smithi
Rhynchonelloidella smithi is a species of extinct, small-sized brachiopods, a marine rhynchonellate lampshell in the family Rhynchonellidae. It is roughly 9/16 inch (1.4 cm), and has about 21 ribs fanning out from the hinge.

Dwergenpaartje · 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
- RhynchonelloidellaPBDB
- Diet
- suspension feederPBDB, for Rhynchonellida
- Life habit
- epifaunalPBDB, for Rhynchonellida
- Motility
- stationaryPBDB, for Rhynchonellida
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At most 2.9 million years on record.
Every occurrence read is dated to somewhere between 168.2 Mya and 165.3 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
11 occurrences of Rhynchonelloidella smithi on record, most of them in the Middle Jurassic. 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
11 occurrences- Middle Jurassic100%
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
2 formations
- Fuller's Earth Formation · Great Oolite Group7
- Forest Marble Formation1
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The named rock units Rhynchonelloidella smithi has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.
Rhynchonelloidella smithi and its relatives
Middle JurassicWhere Rhynchonelloidella smithi and its relatives were recorded in the Middle Jurassic.
Found in the same rock
11 taxa- Acanthothiris spinosa2 sites
- Avonothyris plicatina1 site
- Bradfordirhynchia bradfordensis1 site
- Epithyris maxillata1 site
- Holcothyris angulata1 site
- Kallirhynchia yaxleyensis1 site
- Lacunaerhynchia palma1 site
- Millythyris arvierensis1 site
- Obsoletirhynchia diducta1 site
- Obsoletirhynchia obsoleta1 site
- Rhynchonelloidella curvivarians1 site
The Paleobiology Database records 11 sites for Rhynchonelloidella smithi, and this reads all of them. The number is how many of those sites it was catalogued from too.
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- Jurassic rhynchonellids: internal structures and taxonomic revisions8
- Les terebratulidae du Dogger dans le Mâconnais, le mont d'Or lyonnais et le Jura méridional: Étude systématique et biostratigraphique. Rapports avec la paléoécologie3
Each of the 11 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 Rhynchonelloidella smithi
- Source
- Wikipedia/Commons
- Credit
- Dwergenpaartje
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Rhynchonelloidella smithi 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 itRhynchonelloidella through timeFormations of the Middle JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Davidson 1878)