Strophomena (Strophodonta)

Not Strophomena (Strophodonta). This is Brachyprion Shaler, 1865, a relative — both are Stropheodontidae.
Yale Peabody Museum · 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.
Time the record covers
At least 90 million years on record.
The record covers at least 449.2 Mya to 358.86 Mya. No occurrence read is dated outside 449.5 Mya to 351.9 Mya.
591 occurrences of Strophomena (Strophodonta) on record, most of them in the Devonian. 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
591 occurrences- Ordovicianunder 1%
- Silurian13%
- Devonian86%
- Carboniferousunder 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
127 formations
- Silica Formation · Traverse Group73
- Little Cedar Formation · Cedar Valley Group37
- Waterways Formation26
- Onondaga Formation25
- Shell Rock Formation · Cedar Valley Group23
- Coralville Formation · Cedar Valley Group21
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The named rock units Strophomena (Strophodonta) has been recovered from, largest first. Drawn where the rock is now, not where it formed. 103 further formations hold fewer occurrences each and are not listed. 43 occurrences have no formation on record, which is common for older literature.
Strophomena (Strophodonta) and its relatives
DevonianWhere Strophomena (Strophodonta) and its relatives were recorded in the Devonian.
Found in the same rock
1,255 taxa- Schizophoria64 sites
- Crinoidea61 sites
- Athyris52 sites
- Atrypa49 sites
- Mucrospirifer41 sites
- Cyrtina38 sites
- Productella37 sites
- Pseudoatrypa devoniana36 sites
- Bryozoa35 sites
- Leiorhynchus35 sites
- Strophodonta (Strophodonta) demissa34 sites
- Atrypa reticularis33 sites
- Favosites33 sites
- Schuchertella32 sites
- Cranaena31 sites
- Devonoproductus31 sites
- Pseudoatrypa31 sites
- Spinocyrtia31 sites
- Allanella30 sites
- Gastropoda30 sites
- Megastrophia30 sites
- Elita29 sites
- Tentaculites29 sites
- Schizophoria lata28 sites
The Paleobiology Database records 390 sites for Strophomena (Strophodonta), 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
104 references- Using GIS to unlock the interactions between biogeography, environment, and evolution in middle and Late Devonian brachiopods and bivalves103
- The Clinton of Western and Central New York50
- Community paleoecological study of the Silica Shale equivalent of northeastern Indiana49
- The brachiopod succession of the Late Givetian-Frasnian of Iowa30
- Faunal signatures of Middle-Upper Devonian depositional sequences and sea level fluctuations in the Iowa Basin: US Midcontinent29
- Strata and megafossils of the Middle Devonian Silica Formation24
- Brachiopods of the Traverse Group (Devonian) of Michigan: Part 1. Dalmanellacea, Pentameracea, Strophomenacea, Orthotetacea, Chonetacea, and Productacea24
- Stratigraphy and Paleontology of the lowermost Upper Devonian Slave Point Formation on Lake Claire and the Lower Upper Devonian Waterways Formation on Birch River, NW Alberta20
- Quantitative community analysis: Recurrent group and cluster techniques applied to the fauna of the Upper Devonian Sonyea Group, New York19
- Stratigraphy of the Onondaga Limestone in Central New York14
- Paleoecology and stratigraphy of Devonian sediments in the northern Andes, Colombia: paleogeographic implications [Unpublished Ph.D. thesis, University of Chicago]13
- Addenda to the Check List of Fossil Invertebrates Described from the Traverse Group of Michigan12
Each of the 591 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. 92 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 Brachyprion Shaler, 1865
- Source
- GBIF
- Credit
- Yale Peabody Museum
- 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 itFormations of the DevonianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0.