Philhedra

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
- CraniidaePBDB
- Diet
- suspension feederPBDB, for Craniida
- Life habit
- epifaunalPBDB, for Craniida
- Motility
- stationaryPBDB, for Craniida
- Vision
- blindPBDB, for Craniata
- Environment
- marinePBDB, for Craniata
Time the record covers
At least 104 million years on record.
The record covers at least 458.2 Mya to 353.7 Mya. No occurrence read is dated outside 469.4 Mya to 339.9 Mya.
97 occurrences of Philhedra 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
97 occurrences- Ordovician35%
- Silurian15%
- Devonian43%
- Carboniferous6%
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
47 formations
- Sappington Formation15
- Silica Formation · Traverse Group5
- Tabberabbera Formation · Wentworth Group4
- Moscow Formation · Hamilton Group4
- Louisiana Limestone Formation3
- Chappel Limestone Formation3
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The named rock units Philhedra has been recovered from, largest first. Drawn where the rock is now, not where it formed. 23 further formations hold fewer occurrences each and are not listed. 15 occurrences have no formation on record, which is common for older literature.
Philhedra and its relatives
DevonianWhere Philhedra and its relatives were recorded in the Devonian.
Found in the same rock
1,509 taxa- Crinoidea14 sites
- Rhipidomella missouriensis14 sites
- Cornulites13 sites
- Leptaena13 sites
- Leptalosia scintilla13 sites
- Platystrophia13 sites
- Paracraniops12 sites
- Tentaculites12 sites
- Acanthocrania11 sites
- Schuchertella lens11 sites
- Petrocrania10 sites
- Platyceras10 sites
- Tylothyris10 sites
- Bryozoa9 sites
- Chonetes9 sites
- Hallopora9 sites
- Heteralosia beecheri9 sites
- Rugosa9 sites
- Hindella8 sites
- Spirorbis8 sites
- Syringothyris8 sites
- Atrypa reticularis7 sites
- Cliftonia7 sites
- Crurithyris7 sites
The Paleobiology Database records 85 sites for Philhedra, 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
51 references- Brachiopods from the Sappinton Formation (Devonian - Mississippian) of western Montana13
- Early Llandovery brachiopods of Wales6
- Testing for faunal stability across a regional biotic transition: quantifying stasis and variation among recurring coral-rich biofacies in the Middle Devonian Appalachian Basin5
- The Devonian of the Mitchell and Wentworth Rivers4
- Faunal signatures of Middle-Upper Devonian depositional sequences and sea level fluctuations in the Iowa Basin: US Midcontinent3
- Oekologie und Fazies des juengsten Ober-Devon von Velbert (Rheinisches Schiefergebirge)3
- Community paleoecological study of the Silica Shale equivalent of northeastern Indiana3
- Ecological associations in a regressive sequence: the latest Ordovician of the Oslo-Asker district, Norway3
- The Silurian rocks of the Tortworth Inlier, Gloucestershire3
- Mississippian brachiopods from the Chappel Limestone of central Texas3
- Pre-Chattanooga stratigraphy in Central Tennessee3
- Stratigraphy and fauna of the Louisiana Limestone of Missouri3
Each of the 97 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. 39 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 Philhedra
- Source
- iDigBio
- Credit
- via iDigBio
- 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 itCraniidae through timeFormations of the DevonianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Koken 1889