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Ptygmactrum spiculatum

Rhynchonellata - Rhynchonellida - Petasmatheridae

Taxonomy
Ptygmactrum spiculatum was named by Cooper and Grant (1976). Its type specimen is USNM 152682a, a shell (Articulated shell), and it is not a trace fossil. Its type locality is USNM706b, Hess Canyon, Glass Mtns., which is in a Wordian offshore shelf packstone/wackestone in the Word Formation of Texas.

Synonymy list
YearName and author
1976Ptygmactrum spiculatum Cooper and Grant p. 1943 figs. Pl 505, figs 26-30

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
Lophophorata
PanbrachiopodaCarlson and Cohen 2020
RankNameAuthor
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderRhynchonellidaKuhn 1949
superfamilyWellerelloideaLicharew 1956
familyPetasmatheridaeCooper and Grant 1976
genusPtygmactrum
speciesspiculatum

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.

Ptygmactrum spiculatum Cooper and Grant 1976
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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height21.501.501.501.50-

Composition: low Mg calcitep
Environment: marineuc
Locomotion: stationaryo
Attached: yesp
Life habit: epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2004-02-28 14:12:25
Modified: 2004-02-28 16:12:25
Source: o = order, c = class, p = phylum, uc = unranked clade
References: Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Roadian to the top of the Wordian or 272.30000 to 265.10000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Roadian272.3 - 268.8USA (Texas) Ptygmactrum spiculatum (81693)
Wordian268.8 - 265.1USA (Texas) Ptygmactrum spiculatum (type locality: 43550)