Zygospira

Wilson44691 · CC0 · via Wikidata/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
- AnazyginaePBDB
- Diet
- suspension feederPBDB
- Life habit
- epifaunalPBDB
- Motility
- stationary, attached, epibiontPBDB
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 17 million years on record.
The record covers at least 458.2 Mya to 440.8 Mya. No occurrence read is dated outside 486.85 Mya to 432.9 Mya.
1,004 occurrences of Zygospira 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
1,004 occurrences- Ordovician99%
- 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
112 formations
- Lexington Limestone Formation113
- Martinsburg Formation87
- Kope Formation · Cincinnati Group73
- Waynesville Formation · Richmondian Group47
- Sunset Formation42
- Fairview Formation · Maysvillian Group35
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The named rock units Zygospira has been recovered from, largest first. Drawn where the rock is now, not where it formed. 88 further formations hold fewer occurrences each and are not listed. 103 occurrences have no formation on record, which is common for older literature.
Zygospira and its relatives
OrdovicianWhere Zygospira and its relatives were recorded in the Ordovician.
Found in the same rock
1,431 taxa- Rafinesquina107 sites
- Platystrophia67 sites
- Hebertella58 sites
- Isotelus55 sites
- Hallopora49 sites
- Rhynchotrema48 sites
- Strophomena47 sites
- Lophospira44 sites
- Ambonychia43 sites
- Flexicalymene43 sites
- Homotrypa43 sites
- Escharopora41 sites
- Anazyga recurvirostra37 sites
- Trepostomata35 sites
- Sowerbyella34 sites
- Dalmanella31 sites
- Liospira31 sites
- Modiolopsis29 sites
- Prasopora28 sites
- Ctenodonta27 sites
- Constellaria26 sites
- Cornulites26 sites
- Hiscobeccus capax26 sites
- Rafinesquina trentonensis26 sites
The Paleobiology Database records 937 sites for Zygospira, and this reads 240 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
100 references- Gradient ecology of a biotic invasion: biofacies of the type Cincinnatian Series (Upper Ordovician), Cincinnati, Ohio region, USA304
- Ecological restructuring after extinction: the Late Ordovician (Mohawkian) of the eastern United States119
- GIS-based biogeography of Cincinnatian (Upper Ordovician) brachiopods with special reference to Hebertella51
- Zonation of the Middle and Upper Ordovician strata in northwestern Georgia50
- Ecosystem structure and stability: middle Upper Ordovician of central Kentucky, USA48
- Community gradients in the Martinsburg Fm. (Ord.) southwestern Virginia41
- Analysis of sample-level properties along a paleoenvironmental gradient: the behavior of evenness as a function of sample size33
- Virginia Polytechnic Institute and State University33
- Paleoecology of the Martinsburg Formation at Catawba Mountain, Virginia27
- Lithostratigraphy and depositional environments of the Lexington Limestone (Ordovician) of central Kentucky26
- Biofacies Replacement in a Sequence Stratigraphic Framework: Middle and Upper Ordovician of the Nashville Dome, Tennessee, USA25
- The fossil fauna of the Ordovician in the Cincinnati Region13
Each of the 1,004 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. 88 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 Zygospira
- Source
- Wikidata/Commons
- Credit
- Wilson44691
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Zygospira 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itAnazyginae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1862