PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Fredericksolasma rhomboidalis

Rhynchonellata - Terebratulida - Pseudodielasmatidae

Taxonomy

Fredericksolasma rhomboidale was named by Smirnova and Grunt (2003). Its type specimen is PIN 4104/361, a shell (Articulated shell), and it is a 3D body fossil. Its type locality is Khiling Pass, Gundara River, Locality 1164, which is in a Wuchiapingian marine horizon in the Kaftarmol Formation of Tajikistan.

It was corrected as Fredericksolasma rhomboidalis by Angiolini et al. (2016).

Synonymy list

Year	Name and author
2003	Fredericksolasma rhomboidale Smirnova and Grunt p. 140 figs. 1i-l,3
2007	Fredericksolasma rhomboidale Smirnova p. 806 figs. Pl 5, fig 13; text-fig 78
2016	Fredericksolasma rhomboidalis Angiolini et al. p. 566 figs. 23Bl-Bu

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
—	Lophophorata
—	Panbrachiopoda	Carlson and Cohen 2020
phylum	Brachiopoda	Cuvier 1805

Rank	Name	Author
subphylum	Rhynchonelliformea	Williams et al. 1996
class	Rhynchonellata	Williams et al. 1996
order	Terebratulida
suborder	Terebratulidina
superfamily	Dielasmatoidea	Schuchert 1913
family	Pseudodielasmatidae
genus	Fredericksolasma
species	rhomboidalis	()

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.

†Fredericksolasma rhomboidalis Smirnova and Grunt 2003

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Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	5	7.57	6.40	8.30	7.90	0.728

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: Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Kungurian to the top of the Wuchiapingian or 279.30000 to 254.17000 Ma

Collections (5 total)

Time interval	Ma	Country or state	Original ID and collection number
Kungurian	279.3 - 272.3	Tajikistan	Fredericksolasma rhomboidalis (182705 182706 182707 182708)
Wuchiapingian	259.9 - 254.17	Tajikistan	Fredericksolasma rhomboidale (type locality: 42917)