Ranorthis
Dr L. Robin M. Cocks · CC0 · via GBIF. 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
- RanorthidaePBDB
- 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 9.1 million years on record.
The record covers at least 477.1 Mya to 468 Mya. No occurrence read is dated outside 491.5 Mya to 461 Mya.
121 occurrences of Ranorthis 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
121 occurrences- Cambrianunder 1%
- Ordovician100%
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
22 formations
- Volkhov Formation45
- Leetse Formation11
- Volkhov Stage Formation10
- Toila Formation5
- Upper Fezouata Formation3
- Kriukai Formation3
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The named rock units Ranorthis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 23 occurrences have no formation on record, which is common for older literature.
Ranorthis and its relatives
OrdovicianWhere Ranorthis and its relatives were recorded in the Ordovician.
Found in the same rock
332 taxa- Antigonambonites planus43 sites
- Paurorthis43 sites
- Apomatella ingrica39 sites
- Linguloidea34 sites
- Paurorthis parva33 sites
- Paralenorthis orbicularis30 sites
- Asaphus (Asaphus) lepidurus29 sites
- Pseudocrania29 sites
- Ingria nefedjevi27 sites
- Productorthis parallela25 sites
- Lonchodomas volborthi22 sites
- Nothortis sp.22 sites
- Eosiphonotreta20 sites
- Porambonites planus19 sites
- Productorthis aculeata19 sites
- Nothorthis penetrabilis16 sites
- Scotoharpes spasskii16 sites
- Baltoniodus15 sites
- Drepanoistodus forceps15 sites
- Antigonambonites14 sites
- Cybele bellatula14 sites
- Drepanoistodus basiovalis14 sites
- Metopolichas14 sites
- Paurorthis resima14 sites
The Paleobiology Database records 120 sites for Ranorthis, 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
22 references- Brachiopod macrofaunal distribution through the upper Volkhov - lower Kunda (Low Ordovician) rocks, Lynna River, St. Petersburg region34
- Brakhiopody nadsemejstv Orthacea, Dalmanellacea i Syntrophiacea iz nizhnego ordovika Pribaltiki [Lower Ordovician brachiopods of the superfamilies Orthacea, Dalmanellacea and Syntrophiacea of the Eastern Baltic]23
- Conodonts and brachiopods from the Volkhov Stage (Lower Ordovician) microbial mud mound at Putilovo Quarry, north-western Russia15
- New brachiopods from the Lower-Middle Ordovician (Billingen-Volkhov stages) of the East Baltic6
- Legend of the Central European series of sheets of the State Geological Map of the Russian Federation, scale 1:1,000,000 (third generation)5
- Review of the Ordovician rhynchonelliformean Brachiopoda of the East Baltic: Their distribution and biofacies5
- Early Ordovician Bryozoans from North - Western Russia4
- Brachiopods of the subfamily Atelelasmatinae (Clitambonitacea) from the Arenig, Ordovician, of the Baltic klint area4
- The Hunneberg Stage (Ordovician) in the area east of St. Petersburg, north-western Russia3
- Uppermost Cambrian and Lower Ordovician in northwestern Russia: sequence stratigraphy, sea level changes and bio-events3
- The revision of structural - facial zonation and stratigraphy of the lower part of the Ordovician in the south - east Baltic area3
- Billengsellide and orthide brachiopods: new insights into earliest Ordovician evolution and biogeography from northern Iran2
Each of the 121 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. 10 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 content1
Picture of Ranorthis
- Source
- GBIF
- Credit
- Dr L. Robin M. Cocks
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itRanorthidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Öpik 1939