Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Fredericksolasma nummulus

Rhynchonellata - Terebratulida - Pseudodielasmatidae

Taxonomy
Dielasma nummulus was named by Waagen (1882). It is a 3D body fossil. Its type locality is Katta, basal Middle Productus-limestone (bed 12), Salt Range, which is in a Capitanian carbonate limestone in the Wargal Formation of Pakistan.

It was recombined as Fredericksolasma nummulus by Smirnova (2007).

Synonymy list
YearName and author
1882Dielasma nummulus Waagen p. 344 figs. Pl 25, fig 9
1933Dielasma nummulus Huang p. 82 figs. Pl 11, figs 6, 7
1944Dielasma nummulus Reed p. 151
1987Dielasma nummulus Liao p. 115 figs. Pl 8, figs 2-7
2007Fredericksolasma nummulus Smirnova p. 806

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
—Lophophorata
—PanbrachiopodaCarlson and Cohen 2020
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderTerebratulida
suborderTerebratulidina
superfamilyDielasmatoideaSchuchert 1913
familyPseudodielasmatidae
genusFredericksolasma
speciesnummulus()

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

show all | hide all
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height47.936.109.008.501.31

Composition: low Mg calcitep
Environment: marineuc
Locomotion: stationaryo
Attached: yesp
Life habit: low-level epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2004-02-28 14:14:12
Modified: 2018-11-10 17:47:38
Source: o = order, c = class, p = phylum, uc = unranked clade
References: Nesnidal et al. 2013, Aberhan et al. 2004

Age range: base of the Wordian to the top of the Changhsingian or 266.90000 to 252.17000 Ma

Collections (20 total)


Time interval Ma Country or state Original ID and collection number
Wordian266.9 - 264.28Pakistan Dielasma nummulus (125810 125812)
Capitanian264.28 - 259.51Pakistan Dielasma nummulus (type locality: 119552 125867 125882 125883 127001 127032 127033)
Wuchiapingian259.9 - 254.17China (Guangxi) Dielasma nummulus (112366 112399)
Wuchiapingian259.9 - 254.17Pakistan Dielasma nummulus (125897 125902 125910 126343 126692)
Wuchiapingian259.9 - 254.17China (Guizhou) Dielasma nummulus (136250)
Changhsingian254.17 - 252.17China (Hunan) Dielasma nummulus (105918)
Changhsingian254.17 - 252.17China (Xizang) Dielasma nummulus (187544 187558)