Ares rettensteinensis Cifer, 2020

Cifer, Tim, Goričan, Špela, Gawlick, Hans-Jürgen & Auer, Matthias, 2020, Pliensbachian, Early Jurassic radiolarians from Mount Rettenstein in the Northern Calcareous Alps, Austria, Acta Palaeontologica Polonica 65 (1), pp. 167-207 : 194

publication ID	https://doi.org/ 10.4202/app.00618.2019
persistent identifier	https://treatment.plazi.org/id/C1142978-FFC8-AF79-FC80-A95A51EAFD5D
treatment provided by	Felipe
scientific name	Ares rettensteinensis Cifer
status	sp. nov.

Treatment

Ares rettensteinensis Cifer sp. nov.

Fig. 9H–L.

2002 Ares sp. A ; Whalen and Carter 2002: 142, pl. 15: 6, 13.

? 2002 Cuniculiformis sp. A ; Tekin 2002: 186, pl. 3: 11.

? 2002 Ares sp. cf. A. moresbyensis Whalen and Carter in Carter et al. 1998; Tekin 2002: 192, pl. 5: 9.

2006 Ares sutherlandi Whalen and Carter in Carter et al. 1998; Goričan et al. 2006: 44, pl. ARS02: 2, not 1.

2009 Ares armatus De Wever, 1982a ; Gawlick et al. 2009: 117, fig. 62: 6.

ZooBank LCID: urn:lsid:zoobank.org:act:E32A34DF-6847-4C8F-9679-B2540E6C969D

Etymology: Named after Mount Rettenstein, where the holotype was found.

Type material: Holotype, PMS 2394 View Materials , sample Rö37: 182455 (Fig. 9H) . Paratypes, PMS 2396 View Materials , sample Rö416: 170431 ; PMS 2393 View Materials , sample Rö37: 171137 ; PMS 2394 View Materials , sample Rö37: 182462 ; PMS 2395 View Materials , sample Rö38: 182323, all from type locality .

Type locality: Mount Rettenstein , Northern Calcareous Alps, Austria .

Type horizon: Sample Rö 37, grey marly limestone, Lower Pliensbachian .

Material.—Sample Rö37: stubs Rö37_3 (two specimens), Rö37_6 (11 specimens); sample Rö38: stub Rö38_1 (three specimens); sample Rö416: stub Rö416_4 (three specimens), Mount Rettenstein , Northern Calcareous Alps, Austria, Lower Pliensbachian .

Diagnosis.— Ares with rectilinear or upward directed straight ventral spine.

Description.—Test with small, dome-shaped cephalis with prominent broad, tapering horn; horn approximately twothirds length of cephalis and thorax combined, three-bladed with rounded longitudinal ridges and grooves of similar width. Thorax is increasing in width distally and expanded in a skirt in some specimens (Fig. 9L 1). Pore frames are irregularly arranged, small- to medium in size, polygonal. Ventral spine rectilinear or directed slightly upward and having a slight downward curving trend in some specimens. Dorsal spine directed slightly downward and may have a slight downward curving trend. Dorsal spine less robust than the ventral spine and often not preserved. Apical horn is directed slightly towards the dorsal spine, and forms an approximate 90° angle with both the dorsal and the ventral spine.

Dimensions.—See Table 4. Remarks.— Ares rettensteinensis Cifer sp. nov. differs from Ares mexicoensis Whalen and Carter, 2002 , Ares moresbyensis Whalen and Carter, 1998 , and Ares sutherlandi Whalen and Carter, 1998 , by having the ventral spine rectilinear or directed upwards. Ares armatus De Wever, 1982 has the ventral spine also slightly upward directed in some cases, but the spines of Ares armatus are longer and more curved.