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Pseudoplagiothyra praecursor

Gastropoda - Naticopsidae

Taxonomy
Trochus (Palaeotrochus) praecursor was named by Clarke (1885) [Trochus (Palæotrochus) præcursor Trochus (Palæotrochus) præcursor Trochus (Palæotrochus) præcursor Trochus (Palæotrochus) præcursor]. It is a 3D body fossil.

It was recombined as Palaeotrochus praecursor by Clarke (1904), Webster (1906); it was recombined as Trachydomia praecursor by Clarke and Swartz (1913); it was recombined as Pseudoplagiothyra praecursor by Vostokova (1961), Frýda (2000), Cook et al. (2003), Wagner (2023).

Synonymy list
YearName and author
1885Trochus (Palaeotrochus) praecursor Clarke pp. 55 - 56 figs. pl. 3 f. 5-9
1904Palaeotrochus praecursor Clarke pp. 335 - 336 figs. pl. 19 f. 17-26
1906Palaeotrochus praecursor Webster p. 5 figs. pl. 2 f. 22-23
1913Trachydomia praecursor Clarke and Swartz pp. 678 - 679 figs. pl. 69 f. 15-16
1961Pseudoplagiothyra praecursor Vostokova p. 36 figs. pl. 3 f. 6-9
2000Pseudoplagiothyra praecursor Frýda p. 366
2003Pseudoplagiothyra praecursor Cook et al. p. 197 figs. f. 6e-i
2023Pseudoplagiothyra praecursor Wagner p. 3573

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
suborderNeritaemorpha(Koken 1897)
superfamilyNeritoidea(Rafinesque 1815)
familyNaticopsidae()
genusPseudoplagiothyra
speciespraecursor()

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.

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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: "calcite"f
Composition 2: aragonitef
Locomotion: slow-movingf
Life habit: epifaunalf
Diet: detritivoref
Vision: limitedf
Created: 2010-02-04 09:00:39
Modified: 2025-08-08 09:14:42
Source: f = family
Reference: Squires 1976

Age range: base of the Eifelian to the top of the Early/Lower Famennian or 393.47000 to 368.50000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Eifelian393.47 - 387.95Norway (Svalbard) Palaeotrochus praecursor (275454)
Frasnian382.31 - 372.15Australia (Western Australia) Pseudoplagiothyra praecursor (38981)
Early/Lower Famennian372.15 - 368.5USA (New York) Palaeotrochus praecursor (84619)