Some dicotyledonous pollen types from Cainozoic deposits in the Australian region

Abstract

Pollen types referable to the families Casuarinaceae, Haloragaceae,Myrtaceae, Olacaceae, Proteaceae, Santaiaceae, and Sapindaceae have been described from Cainozoic deposits in the Australian region; their relationship to living species has been discussed wherever possible. The characters and distribution of three sporomorphs of uncertain affinity have been considered. Details concerning the pollen grains of some of the living species of Anacolosa, Cathedra, Casuarina, the tribe Cupanieae (Sapindaceae), Haloragis, Myriophyllurn, and Santalurn have been recorded.

New insights into the pollen morphology of the genus Gunnera (Gunneraceae)

“…Selling (1948) Grana 43: [15][16][17][18][19][20][21]2004 pointed out the similarity between the fossil pollen species Tricolpites reticulatus, known from South America in the Late Cretaceous (Jarzen 1980), and pollen of the extant Gunnera (Selling 1948). Later, the studies of Cookson & Pike (1954) and Jarzen (1980) validated this identification. The stenopalynous nature of Gunnera makes its pollen morphology difficult to use for species identification.…”

Palynology of Sites 280–284, DSDP Leg 29, off Southeastern Australia and Western New Zealand

“…Additional forms present include Leiosphaeridia telmatica Sarjeant and Strachan, 1968; and the Lower Cretaceous remanié grains Cycadopites nitidus (Balme) de Jersey, 1963; Lycopodiumsporites nodosus Dettmann, 1963; and Ischiosporites punctatus Cookson and Dettmann, 1958.…”

“…Cookson and Dettmann, 1958. Core 283-16 (4 samples) appears to be slightly older and may be lower Paleocene. Similar assemblages to those of Cores 13-15 occur with the addition of the characteristic dinoflagellates Systematophora sp.…”

“…is also represented. The Cretaceous spore Ceratosporites equalis Cookson and Dettmann, 1958, is present in Core 12.…”

First palynologic record of the Cretaceous La Yesera Formation (Salta Group), northwestern Argentina

“…Ceratosporites equalis has a prominent and distinct laesura reaching equator and a smooth proximal face (Cookson & Dettmann, 1958b). The ornamentation in the distal face of the extant species Anthoceros multifi dus Lindb.…”