Sedimentary rocks of the Murihiku Supergroup considered to be latest T
riassic (Rhaetian), crop out about 10 m below the Glenham Porphyry, ne
ar Glenham, New Zealand. They contain the vegetative macrofossils Marc
hantites sp. (Hepaticae), Pachydermophyllum praecordillerae (Frenguell
i) Retallack and Pachydermophyllum benmorensis Anderson & Anderson (Pe
ltaspermaoeae), cf. Dicroidium dubium var. dubium Anderson & Anderson
(Corystospermaceae), Desmiophyllum sp. cf. D. indicum Sahni (possible
conifer), and Gingkophytopsis sp. (possible progyosperm). Reproductive
material includes ovulate structures (Peltaspermum cournanei sp. nov.
), pollen-bearing structures (Antevsia sp.) and probably seeds of the
Peltaspermaceae, ? Umkomasia (Corystospermaceae), and a possible progy
mnosperm microsporophyll. The palynoflora is dominated by bisaccate gy
mnospermous pollen, mainly Alisporites spp., consistent with the prese
nce of corystosperm macrofossils. Moderately common pollen of Cycadopi
tes spp. may be of peltasperm origin.