Fredericksolasma

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.
On record
Recorded, not inferred- Sits inside
- PseudodielasmatidaePBDB
- Diet
- suspension feederPBDB, for Terebratulida
- Life habit
- low-level epifaunalPBDB, for Terebratulida
- Motility
- stationaryPBDB, for Terebratulida
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 39 million years on record.
The record covers at least 293.52 Mya to 254.14 Mya. No occurrence read is dated outside 298.9 Mya to 251.902 Mya.
72 occurrences of Fredericksolasma on record, most of them in the Permian. 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
72 occurrences- Permian100%
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
17 formations
- Amb Formation26
- Gundara Formation12
- Wargal Formation8
- Piqiang Formation3
- Changxing Formation3
- Heshan Formation2
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The named rock units Fredericksolasma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.
Fredericksolasma and its relatives
PermianWhere Fredericksolasma and its relatives were recorded in the Permian.
Found in the same rock
642 taxa- Athyris18 sites
- Cleiothyridina semiconcava17 sites
- Richthofenia lawrenciana16 sites
- Betaneospirifer marcoui14 sites
- Hemiptychina sparsiplicata14 sites
- Martiniopsis subpentagonalis13 sites
- Bellerophon12 sites
- Spirigerella numismalis12 sites
- Hustedia grandicosta11 sites
- Streptorhynchus pelargonatus10 sites
- Betaneospirifer moosakhailensis9 sites
- Callispirina ornata9 sites
- Costiferina spiralis9 sites
- Hustedia indica9 sites
- Spiriferina9 sites
- Strophalosia (Heteralosia) tenuispina9 sites
- Cleiothyridina interposita8 sites
- Cleiothyridina subexpansa8 sites
- Derbyia buriensis8 sites
- Echinalosia nodosa8 sites
- Spirigerella derbyi8 sites
- Terebratuloidea davidsoni8 sites
- Hemiptychina amygdala7 sites
- Leptodus nobilis7 sites
The Paleobiology Database records 61 sites for Fredericksolasma, 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
16 references- Brachiopoda and Mollusca from the Productus limestones of the Salt Range35
- Brachiopods from the Cisuralian–Guadalupian of Darvaz, Tajikistan and implications for Permian stratigraphic correlations11
- Productus Limestone Fossils, Part IV, fas. 14
- Lower Permian reef-dwelling brachiopod faunas from the Tarim Basin, Northwest China: biostratigraphy, palaeoecology and biogeography3
- New Permian brachiopods of the Order Terebratulida from the southwestern Darvaz (northern Pamirs): 3. Superfamily Loboidothyroidea3
- End-Permian mass extinction and palaeoenvironmental changes in Neotethys: Evidence from an oceanic carbonate section in southwestern Tibet2
- Paleoecological characters and stratigraphic significance of silicified brachiopods of the Upper Permian from Heshan, Laibin, Guangxi2
- The brachiopods and the boundary of Late Carboniferous-Early Permian in Longlin region, Guangxi2
- Late Changxingian brachiopods from Huatang of Chenxian County, southern Hunan2
- Upper Permian and Permian-Triassic boundary in north Iran2
- Systematics and phylogeny of the Late Permian terebratulids (Brachiopoda) from Darvaz1
- Changhsingian brachiopod assemblage sequence in Zhongliang Hill, Chongqing1
Each of the 72 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. 4 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 Fredericksolasma
- Source
- GBIF
- Credit
- Yale Peabody Museum
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Fredericksolasma 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 itPseudodielasmatidae through timeFormations of the PermianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Smirnova 2001