Sedis
- Dataset
- Barremian palynofloras from the Ashikajima and Kimigahama formations (Choshi Group, Outer Zone of south-west Japan)
- Rank
- CLASS
Classification
- kingdom
- Animalia
- class
- Sedis
description
DESCRIPTION Microspore? Amb circular. The proximal face is not seen. The exine is reticulated with a mesh polygonal, of various shapes and sizes (lumina 1 - 5 µm in (Bolkhovitina, 1953) Playford & Dettmann, 1965, proximal and distal faces, Kimigahama Fm, I 1 a-Z 52; J, Laevigatosporites sp., lateral view, Ashikajima Fm, II 2 e-Y 60; K, Laevigatosporites ovatus Wilson & Webster, 1946, lateral view, Kimigahama Fm, I 1 c-P 35 / 3; L, Exesipollenites tumulus Balme, 1957, distal view, Kimigahama Fm, I 1 a-R 60 / 3; N, Callialasporites sp. cf C. ugensis Takahashi & Sugiyama, 1990, Ashikajima Fm, II 2 f-Y 42 / 3; O, Eucommiidites troedssonii (Erdtman, 1948) Potonié, 1958, Kimigahama Fm, I 1 b-R 39; P, Cerebropollenites mesozoicus (Couper, 1958) Nilsson, 1958, lateral view, Ashikajima Fm, II 2 a-J 61 / 1 d; Q, Alisporites sp., polar view, Ashikajima Fm, II 2 d-Q 59 / 2; R, Callialasporites dampieri (Balme, 1957) Sukh-Dev, 1961, Ashikajima Fm, II 2 b-T 46 / 4 m. Scale bar: 10 μm. diameter). The exine is about 1.5 µm thick. Equatorial diameter = 20 - 25 µm.
discussion
REMARKS Only a group of these elements was observed, and isolated ones must be found to permit an observation of the two faces and propose an identification. BOTANICAL AFFINITIES Unknown.