Dammarophyllum sp.

Greguš, Josef & Kvaček, Jiří, 2015, Revision Of Cenomanian Flora From The Maletín Sandstone, Acta Musei Nationalis Pragae Series B 71 (3 - 4), pp. 315-364 : 321

Dammarophyllum sp.

Pl. 4, Fig. 4

S t r a t i g r a p h y: Peruc-Korycany Formation, Cenomanian, Upper Cretaceous.

M a t e r i a l s t u d i e d: MMT(M)/G_338.

O c c u r r e n c e: Maletín.

D e s c r i p t i o n. Single specimen no. MMT ( M)/ G _338 (Pl. 4, Fig. 4) from Maletín is a 160 mm long and 25 mm wide leaf impression. The leaf lamina is entire-margined, elliptic to lanceolate, with obtuse apex. Abruptly narrowing base runs to relatively wide, and 30 mm long petiole. Dense parallel venation converts to the apex consisting of two types of veins: primary veins and intersecondary veins. Overall number of veins is up to 30 in the widest part of leaf lamina. Density is approximately 12 veins per cm .

D i s c u s s i o n. Based on the shape of the leaf lamina and venation pattern, the studied material is assigned to the genus Dammarophyllum . This genus has uncertain systematic affinity, and probably belongs to the family Araucariaceae (J. Kvaček 2003) . It differs in shape and size of leaf lamina from morphologically similar D. striatum (VELENOVSKÝ) VELENOVSKÝ ex J. KVAČEK , from the Cenomanian of Bohdánkov. The specimen described here has elliptic to lanceolate lamina, 160 mm long and 25 mm wide, while the holotype of D. striatum (NM-F241), described by J. Kvaček (2003), is smaller (61× 21 mm), and more ovate to rhombic in shape. Additionally, D. sriatum is defined by cuticle, which is not preserved in the specimen from Maletín.