Plectorthis

via iDigBio · CC0 · via iDigBio. 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
- PlectorthidaePBDB
- Diet
- suspension feederPBDB, for Orthida
- Life habit
- epifaunalPBDB, for Orthida
- Motility
- stationary, attachedPBDB, for Orthida
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 34 million years on record.
The record covers at least 477.1 Mya to 443.1 Mya. No occurrence read is dated outside 486.4 Mya to 440.5 Mya.
218 occurrences of Plectorthis on record, most of them in the Ordovician. 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
218 occurrences- Ordovician100%
- Silurianunder 1%
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
60 formations
- Fairview Formation · Maysvillian Group47
- Badger Flat Formation · Mazourka Group22
- Corryville Formation11
- Anderken Formation8
- Benbolt Formation7
- Verulam Formation · Simcoe Group6
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The named rock units Plectorthis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 36 further formations hold fewer occurrences each and are not listed. 20 occurrences have no formation on record, which is common for older literature.
Plectorthis and its relatives
OrdovicianWhere Plectorthis and its relatives were recorded in the Ordovician.
Found in the same rock
1,361 taxa- Rafinesquina alternata49 sites
- Platystrophia44 sites
- Trepostomata42 sites
- Isotelus39 sites
- Flexicalymene33 sites
- Rafinesquina30 sites
- Sowerbyella29 sites
- Ambonychia27 sites
- Escharopora26 sites
- Strophomena25 sites
- Zygospira modesta25 sites
- Glyptocrinus24 sites
- Zygospira22 sites
- Constellaria20 sites
- Rhynchotrema20 sites
- Hallopora19 sites
- Lophospira17 sites
- Petrocrania17 sites
- Prasopora17 sites
- Bryozoa16 sites
- Cyclonema15 sites
- Dalmanella15 sites
- Parvohallopora ramosa15 sites
- Anazyga recurvirostra14 sites
The Paleobiology Database records 186 sites for Plectorthis, 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
61 references- Gradient ecology of a biotic invasion: biofacies of the type Cincinnatian Series (Upper Ordovician), Cincinnati, Ohio region, USA42
- GIS-based biogeography of Cincinnatian (Upper Ordovician) brachiopods with special reference to Hebertella16
- Zonation of the Middle and Upper Ordovician strata in northwestern Georgia14
- Stratigraphy of the Lower Middle Ordovician of Tazewell County, Virginia11
- Upper Ordovician brachiopods from the Anderken Formation, Kazakhstan: their ecology and systematics8
- Species diversity patterns in some middle Ordovician communities from California-Nevada8
- Palaeozoic geology of the Lake Simcoe Area, Ontario7
- Late Ordovician brachiopods from the Dulankara formation of the Chu-ili range, Kazakhstan: their systematics, palaeoecology and palaeobiogeography6
- Brachiopods from the White Head Formation (Late Ordovician-Early Silurian) of the Perce region, Quebec, Canada5
- Ordovician Brachiopods, Trilobites, and Stratigraphy in Eastern and Central Nevada5
- The fossil fauna of the Ordovician in the Cincinnati Region5
- Late Ordovician brachiopod communities of southeast China4
Each of the 218 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. 49 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 content2

Picture of Plectorthis
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Credit
- Shellie Luallin
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itPlectorthidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Hall and Clarke 1892)