Strophomenata
Strophomenata is an extinct class of brachiopods in the subphylum Rhynchonelliformea.

Wilson44691 · 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
- RhynchonelliformeaPBDB
- Diet
- suspension feederPBDB, for Brachiopoda
- Life habit
- low-level epifaunalPBDB, for Brachiopoda
- Motility
- stationary, attachedPBDB, for Brachiopoda
- Vision
- blindPBDB
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 294 million years on record.
The record covers at least 500.5 Mya to 205.7 Mya. No occurrence read is dated outside 504.5 Mya to 201.4 Mya.
12,000+ occurrences of Strophomenata on record. 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
12,000 occurrences read- Cambrianunder 1%
- Ordovician21%
- Silurian22%
- Devonian23%
- Carboniferous24%
- Permian10%
- Late Triassicunder 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. The read hit its cap, so every figure above is a floor and the shares are of the occurrences read. More on what this infers.
Found in
at least 837 formations
- Ludlowville Formation · Hamilton Group344
- Foraker Limestone Formation · Council Grove Group259
- Cherokee Shale Formation246
- Wood Siding Formation · Wabaunsee Group188
- Skaneateles Formation · Hamilton Group166
- Onondaga Formation162
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The named rock units Strophomenata has been recovered from, largest first. Drawn where the rock is now, not where it formed. The read hit its cap, so each count is a floor. 813 further formations hold fewer occurrences each and are not listed. 1,673 occurrences have no formation on record, which is common for older literature.
Found in the same rock
1,759 taxa- Crinoidea108 sites
- Rhombopora52 sites
- Crurithyris49 sites
- Brachiopoda46 sites
- Leptaena44 sites
- Hallopora40 sites
- Lingula39 sites
- Punctospirifer39 sites
- Isotelus37 sites
- Rafinesquina37 sites
- Gastropoda34 sites
- Rhipidomella34 sites
- Trepostomata34 sites
- Composita33 sites
- Bryozoa32 sites
- Strophomena32 sites
- Bivalvia31 sites
- Chonetinella31 sites
- Flexicalymene30 sites
- Orbiculoidea29 sites
- Pterinea29 sites
- Sowerbyella29 sites
- Zygospira29 sites
- Hustedia28 sites
The Paleobiology Database records at least 685 sites for Strophomenata, 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
at least 545 references- Stratigraphy and Paleontology of the Uppermost Pennsylvanian and Lowermost Permian Rocks in Kansas857
- Early Llandovery brachiopods of Wales528
- T.D. Olszewski''s Ph.D. - Penn State University327
- Stratigraphic and Paleontologic Studies of the Pennsylvanian and Permian Rocks in North-Central Texas269
- Pennsylvanian Invertebrate Faunas of Southeastern Kansas264
- Palaeozoic geology of the Lake Simcoe Area, Ontario208
- Community paleoecology as a geologic tool: the Chinese Ashgillian-Eifelian (latest Ordovician through early Middle Devonian) as an example156
- The stratigraphy of the Carboniferous rocks of the Weaver Hills District, North Staffordshire148
- The Ordovician-Silurian boundary in the Garth area of southwest Powys, Wales132
- The paleoecology of a Lower Carboniferous marine transgression127
- Lower Devonian (Lochkovian) biostratigraphy and brachiopod faunas, Canadian arctic islands124
- La limite Lochkovien-Praguien (Devonien inferieur) dans le Massif armoricain: especes index et correlations121
Each of the 12,000 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. That read hit its cap, so each count is a floor. 533 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 Strophomenata
- Source
- Wikipedia/Commons
- Credit
- Wilson44691
- 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 itRhynchonelliformea through timeThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Williams et al 1996