Dicotylophyllum cf. proteoides (Unger, 1867) Herman and Kvaček, 2010

Halamski, Adam T., 2013, Latest Cretaceous leaf floras from southern Poland and western Ukraine, Acta Palaeontologica Polonica 58 (2), pp. 407-443 : 430-432

Dicotylophyllum cf. proteoides (Unger, 1867) Herman and Kvaček, 2010

Figs. 2E, 12E–G.

cf. 1867 Phyllites proteoides ; Unger 1867: 652, pl. 2: 11.

1907 Aralia coriacea Vel. ; Nowak 1907a: 55, pl. 2: 24.

1907 Eucalyptus haldemiana Deb. ; Nowak 1907a: 52, pl. 1: 16.

1907 Pimelea delicatula Lesqx. ; Nowak 1907a: 52, pl. 1: 3.

1907 Aralia (Panax) dentifera (?) Vel.; Nowak 1907a: 54, pl. 2: 21.

http://dx.doi.org/10.4202/app.2011.0024

1998 “ Cassia ” antiquorum Heer ; Drygant 1998: 147–149, pl. 3: 6a, b.

cf. 2010 Dicotylophyllum proteoides (Unger) Herman and Kvaček , comb. nov.; Herman and Kvaček 2010: 95–96; text−figs. 45, 46; pls. 28: 1–15, 29: 1–7, 36: 8 [ubi syn.].

Material.—L PB−K.5 (formerly 144), 6 (formerly 145), 8 (formerly 147) from Potelych, L PB−K.38 (formerly 3262) from Pidtemne, ZPAL Pl 4/8/1 from Majdan Nepryski, RGM 234271 from Piotrawin.

Description.—Blade attachment marginal, laminar size nanophyll to microphyll, length to width ratio between 3:1 and 7.6:1 (possibly more). Laminar shape elliptic to linear with both medial and base symmetry. Apex shape straight to acuminate (without drip tip), base shape cuneate to convex. The margin is entire.

There is a single straight primary vein; lower order venation not preserved.

Remarks.—This taxon corresponds well to Dicotylophyllum proteoides (Unger, 1867) Herman and Kvaček, 2010 from the lower Campanian of Grünbach ( Austria) in overall shape and variability including both short and lanceolate as well as long linear leaves (e.g., monospecific accumulation illustrated by Herman and Kvaček 2010: pl. 29: 1). However, diagnostic lower order venation ( Herman and Kvaček 2010: pl. 28: 10) is never preserved in our material, suggesting the possibility that the leaves were hyphodromous. That is why these specimens have been left in open nomenclature.

Dicotylophyllum proteoides might be of lauraceous affinity; however, in absence of cuticles an unequivocal assignment is not possible ( Herman and Kvaček 2010).