Coralliophila megaglobosa, Harzhauser & Landau & Merle, 2025

Harzhauser, Mathias, Landau, Bernard M. & Merle, Didier, 2025, The Muricidae (Gastropoda, Muricoidea) of the Miocene Paratethys Sea (Aspellinae, Ergalataxinae, Coralliophilinae, Rapaninae), Zootaxa 5611 (1), pp. 1-106 : 74-75

publication ID	https://doi.org/10.11646/zootaxa.5611.1.1
publication LSID	lsid:zoobank.org:pub:78FDE0BC-8C7A-4E67-B387-71A58ADD333D
persistent identifier	https://treatment.plazi.org/id/039A879F-FF85-FFC9-2785-D45DFE08FC3E
treatment provided by	Plazi
scientific name	Coralliophila megaglobosa
status	sp. nov.

Treatment

Coralliophila megaglobosa sp. nov.

Figs 41 View FIGURE 41 , 42D View FIGURE 42 1 –D View FIGURE 1 3 View FIGURE 3

Murex View in CoL ( Occenebra [sic]) imbricatus Brocchi—Hoernes & Auinger 1885: 223, pl. 27, fig. 4 [non Ocinebrina imbricata ( Brocchi, 1814) View in CoL ].

O [cinebrina]. imbricata Brocchi View in CoL — Sieber 1958: 146 [non Ocinebrina imbricata ( Brocchi, 1814) View in CoL ].

Type material. Holotype: NHMW 1858/0043/0047, SL: 39.3 mm, MD: 26.7 mm, Lăpugiu de Sus ( Romania), illustrated in Hoernes & Auinger (1885: pl. 27, fig. 4), figs. 42D 1 –D 3.

Type locality. Lăpugiu de Sus ( Romania), Făget Basin .

Type stratum. Silt and clay of the Dej Formation.

Age. Middle Miocene, early/middle Badenian (Langhian).

Etymology. mega, Ancient Greek for large; globosa, Latin for globose.

Diagnosis. Large, robust, globose shell with inflated, convex last whorl, delicate sculpture of subequal, narrow primary (IP, P1–P6, ADP, MP, ABP, EAB1) and secondary cords (adis, abis, s1–s6, ads, ms) and slightly recessed tertiary threads.

Description. Large, robust, globose shell; apical angle 70°. Protoconch and transition into teleoconch worn; protoconch broad conical of about two convex whorls. Teleoconch of up to 4.5 whorls. Suture moderately incised, shallowly undulating. Early teleoconch whorls with weakly convex subsutural ramp and rounded mid-whorl angulation. Axial sculpture of ten low, broad ribs, slightly weakening over subsutural ramp. Spiral sculpture of adis, IP, abis, P1, s1, P2, s2 of sub-equal strength, P1 along shoulder only slightly more prominent. Axial ribs decreasing in strength and number on last two whorls. Last whorl attaining 77% of total height, inflated, globose, with about three broad axial ribs in first quarter, axial sculpture reduced to indistinct broad folds on later part of last whorl. Spiral sculpture of regular, delicate pattern formed by weak IP, P1–P6, ADP, MP, ABP and EAB1 with only slightly weaker adis, abis, s1–s3 each adjoined by single weaker tertiary thread on either side, and abapically s4, s5, s6, ads and ms. Close-set growth lines forming weakly scabrose sculpture in spiral interspaces. Broad, strongly swollen fasciole, delimiting moderately wide pseudoumbilicus. Aperture wide, ovate. Outer lip not thickened, smooth. Anal canal very wide, indistinct; siphonal canal moderately long, wide, open, straight, slightly dorsally recurved. Columella straight, smooth. Columellar callus forming broad, thin, adherent rim.

Discussion. Coralliophila megaglobosa sp. nov. is reminiscent of some extant species with globose outline, such as Coralliophila latilirata (Rehder, 1985) from Polynesia, C. hotei (Kosuge in Kosuge & Suzuki, 1985) from Japan and C. cancellarioidea Oliverio, 2008 from New Caledonia. The Paratethyan species was confused by Hoernes & Auinger (1885) with Ocinebrina imbricata ( Brocchi, 1814) but differs from that Pliocene Mediterranean species distinctly in its globose shape and delicate spiral sculpture [see Pinna & Spezia 1978: pl. 35, fig. 2 for the lectotype of Ocinebrina imbricata ( Brocchi, 1814) ]. Coralliophila megaglobosa is reminiscent of Coralliophila badensis sp. nov. with a delicate spiral sculpture of regular weak primary and secondary cords. However, it differs from C. badensis in its much larger size, higher spire, and more regularly globose last whorl. On the spire, the spiral sculpture of C. megaglobosa displays P1, s1, P2, s2 of sub-equal strength with P1 along shoulder only slightly more prominent whilst that of C. badensis displays P1 and P2 more prominent, more close set and P1 placed at a shorter distance above anterior suture.