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Tropidelasma pygmaeum

Strophomenata - Orthotetida - Schuchertellidae

Taxonomy
Streptorhynchus pygmaeum was named by Girty (1909). It is a 3D body fossil. Its type locality is USGS 3763 green, Comanche Canyon, Glass Mountains, which is in a Roadian carbonate limestone in the Word Formation of Texas.

It was recombined as Tropidelasma pygmaeum by Cooper and Grant (1974).

Synonymy list
YearName and author
1909Streptorhynchus pygmaeum Girty
1931Streptorhynchus pygmaeum King p. 49 figs. Pl 4, figs 4-5
1974Tropidelasma pygmaeum Cooper and Grant p. 343

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
—Lophophorata
—PanbrachiopodaCarlson and Cohen 2020
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classStrophomenataWilliams et al 1996
orderOrthotetidaWaagen 1884
suborderOrthotetidina
superfamilyOrthotetoidea()
familySchuchertellidae
subfamilyStreptorhynchinae
genusTropidelasma
speciespygmaeum()

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.

†Tropidelasma pygmaeum Girty 1909
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitep
Environment: marineuc
Locomotion: stationaryp
Attached: yesp
Life habit: low-level epifaunalp
Diet: suspension feederp
Vision: blindc
Created: 2010-02-15 05:25:57
Modified: 2010-02-15 07:25:57
Source: c = class, p = phylum, uc = unranked clade
References: Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Artinskian to the top of the Roadian or 290.10000 to 266.90000 Ma

Collections (9 total)


Time interval Ma Country or state Original ID and collection number
Artinskian290.1 - 283.3USA (Texas) Streptorhynchus pygmaeum (150119)
Kungurian283.3 - 274.4USA (Texas) Streptorhynchus pygmaeum (108399 149783 149931)
Roadian274.4 - 266.9USA (Texas) Streptorhynchus pygmaeum (149786) Streptorhynchus pygmaeum, Streptorhynchus sp. a (type locality: 108862)
Roadian - Wordian274.4 - 264.28USA (Texas) Streptorhynchus pygmaeum (149944 150118)
Roadian - Capitanian274.4 - 259.51USA (Texas) Streptorhynchus pygmaeum (108827)