Emiluvia prisca Tekin, 2020

Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, Geodiversitas 42 (27), pp. 493-537 : 508

Emiluvia prisca Tekin , n. sp.

( Fig. 6 W-Y)

urn:lsid:zoobank.org:act:7DE81B35-1355-426F-89AC-1AA538F91A9C

HOLOTYPE. — Sample Orbuk-46, HU.JMB.0111 ( Fig. 6W ).

PARATYPES. — HU.JMB.0112 ( Fig. 6X ), HU.JMB.0113 ( Fig. 6Y ).

TYPE LOCALITY. — Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey.

ETYMOLOGY. — From the Latin: Prisca: former, ancient, old-fashioned, due to its old occurrence.

OCCURRENCE. — Lower Jurassic, middle Lower Pliensbachianupper Pliensbachian, Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey.

DIMENSIONS (based on three specimens, in µm). — Diameter of test: 92-100 (holotype: 100, average: 97.3); Length of spines: 110- 130 (holotype: 130, average: 118.6).

DESCRIPTION

Test large, sphaerical to subsphaerical with four spines situated at corners. Very large nodes present at pore frame vertices on the outer layer of cortical shell. Four nodes visible per row. Inner layer of pore frames polygonal (mainly triangular). Spines longer than the diameter of cortical shell and mainly equal, tapering distally, terminated with very sharp end. They are tricarinate with relatively wide ridges and wide grooves.

REMARKS

This species can be differentiated from Emiluvia tuberis ( Carter et al. 1998: 41-42, pl. 5, figs 9, 10, 19) by having a sphaerical to subsphaerical cortical shell with large nodes at pore frame vertices.

Figures

FIG. 6. — Photomicrographs of the radiolarians from the Orbuklukeli section: A, Betraccium kennecottense Carter, 1993, Orbuk-15; B, Betraccium perilense Carter, 1993, Orbuk-15; C, D, Gorgansium alpinum Kozur & Mostler, 1990, Orbuk-32; E, F, Gorgansium gongyloideum Kishida & Hisada, 1985, Orbuk-41; G, Pantanellium fosteri Pessagno & Blome,1980, Orbuk-15; H-J, Pantanellium freboldi Whalen & Carter in Carter,Whalen & Guex,1998;H-I, Orbuk-27; J, Orbuk-31; K-O, Pantanellium giganteum Tekin, n. sp.; K, Holotype, Orbuk-26; L-O, Paratypes; L, Orbuk-26; M, Orbuk-27; N-O, Orbuk-31; P, Pantanellium kluense Pessagno & Blome, 1980, Orbuk-26; Q, R, Pantanellium tanuense Pessagno & Blome,1980; Q, Orbuk-26; R, Orbuk-27; S-U, Novamuria impensa (Whalen & Carter in