Pseudoterebellum, Maxwell & Rymer & Congdon, 2021

Maxwell, Stephen J., Rymer, Tasmin L. & Congdon, Bradley C., 2021, Resolving phylogenetic and classical nomenclature: A revision of Seraphsidae Jung, 1974 (Gastropoda: Neostromboidae), Zootaxa 4990 (3), pp. 401-453 : 432

publication ID

https://doi.org/ 10.11646/zootaxa.4990.3.1

publication LSID

lsid:zoobank.org:pub:70610FEE-4497-4804-817C-CEC2D66DDBFE

DOI

https://doi.org/10.5281/zenodo.5088444

persistent identifier

https://treatment.plazi.org/id/039B8783-8745-FFEF-FF1E-F0AD114FFCAB

treatment provided by

Plazi

scientific name

Pseudoterebellum
status

gen. nov.

Pseudoterebellum View in CoL new genus

( Pseudoterebellinae )

Figure 8A–C View FIGURE 8

Type. Terebellum diversiornatum Eames, 1952, p. 74 , pl. 3, fig. 77.

RegNum Registration Number. 683.

Reference Phylogeny. Figure 3 View FIGURE 3 .

Definition. The maximum clade consisting of Pseudoterebellum diversiornatum ( Eames, 1952) and all species that share a more recent common ancestor with it than with Seraphs sopitus ( Brander, 1766) , Paraseraphs tetanus Jung, 1974 or Terebellum terebellum ( Linnaeus, 1758) .

Diagnosis. The shell is evolute, lacking a posterior canal, and is widest near the posterior. The labrum of the shell is protocyrt. The suture is channeled. The columella is smooth.

Composition. Pseudoterebellum contains three species detailed herein, and belongs to the Pseudoterebellinae , but excludes Paraseraphs and Terebellum .

Remarks. This clade arose in the early Ypresian of the Middle East (Table 7). Members of the complex may have radiated east via the Tethys during the Ypresian into the Indonesian region of the southwestern Pacific, and contained the forebearer of the modern clade Terebellum . However, there is a significant geological discontinuity in the geological record from the period of extinction of Pseudoterebellum at the end of the Eocene, to the appearance of Terebellum during the mid-Oligocene.

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