Classostrobus justae J.Kvaček, Bueno-Cebol. et E.Barrón in Bueno-Cebollada, Kvaček & Barrón

Plant Fossil Names Registry Number: PFN003542

Act LSID: urn:lsid:plantfossilnames.org:act:3542

Authors: J. Kvaček, C. A. Bueno-Cebollada & E. Barrón

Rank: species

Genus:

Reference for this name: Bueno-Cebollada, C. A., Kvaček, J. & Barrón, E. (2026): Late Albian floras of eastern Iberia: insights into the palaeoenvironments and palaeoecology of fossil plant communities associated with amber-bearing sedimentary successions. – Cretaceous Research 180: 1–30.

Page of description: 9

Illustrations or figures: Fig. 8 A–F

Original diagnosis/description

Microsporangiate cone borne by Frenelopsis justae Barral et al. (2019). Cone spherical to shortly ovoid (Fig. 8 A). About 40 microsporophylls spirally arranged; each sporophyll with an acuminate apex and a broad base, its margin formed by a frill, both sides of the sporophyll showing indumentum consisting of long unicellular trichomes (Fig. 8C). Abaxial cuticle showing stomata in ill-defined rows (Fig. 8 B, E). Each stoma is surrounded by 4 or 3 subsidiary cells with inner papillae (Fig. 8 E, F)

Stratigraphy

Cretaceous, Lower Cretaceous, Albian
Interval 3 of the San Just logged section, Utrillas Group, late Albian, Early Cretaceous.

Locality

Spain
San Just outcrop (Maestrazgo Basin, IBRS, Eastern Iberia).