Pergamaster ultra Mah 2018, n. sp. ...

• Main Author: Mah, Christopher L.
• Format: Text
• Language: unknown
• Published: Zenodo 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Asteroidea; Valvatida; Goniasteridae; Pergamaster; Pergamaster ultra; Antarctic; The Antarctic; Ross Sea; Indian; Weddell; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.5990821; https://zenodo.org/doi/10.5281/zenodo.5990821

Pergamaster ultra n. sp. Figure 28 A–E Etymology. The species epithet ultra is Latin for “beyond” or “on the other side”, alluding to Pergamaster ’s first occurrence from beyond the Antarctic region. Diagnosis. A species distinguished by its weakly stellate shape (R/r=1.76) (Fig. 28A), bare, smooth abactinal plates (Figs. 28A, B), surrounded by large peripheral granules. Marginal plates, bare smooth, form distinctive frame as viewed from above (Figs. 28A, B). Granule covered actinal surface. Furrow spines three or four (Fig. 28D). Comments. The bare abactinal plates and distinctively large peripheral granules around plates as well as the wide, smooth bare marginal plates serve to identify this specimen as a member of the genus Pergamaster, a genus known previously only from the Antarctic (Mah 2011). Mah (2011) outlined two accepted species, Pergamaster incertus from the Weddell Quadrant and Pergamaster triseriatus from the Ross Sea. Both Antarctic species share several characters absent from Pergamaster ... : Published as part of Mah, Christopher L., 2018, New genera, species and occurrence records of Goniasteridae (Asteroidea; Echinodermata) from the Indian Ocean, pp. 1-116 in Zootaxa 4539 (1) on pages 71-72, DOI: 10.11646/zootaxa.4539.1.1, http://zenodo.org/record/2615911 ...