By V. Krassilov, Z. Lewy, Eviatar Nevo
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Additional info for Late Cretaceous (Turonian) Flora of Southern Negev, Israel
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2001; Schweitzer et al, 2003) in association with Weichselia. However, neither Weichselia, nor Piazopteris, which remains are often associated, possessed the morphological adaptations typical of modern mangroves. Developmental adaptations to mangrove habitats, such as vivipary, are known only in angiosperms. Therefore, if intertidal arboreal vegetation existed before angiosperms, which is highly probable, it must have been ecologically different from modern mangroves. Some pre-adapted angiosperms penetrating such communities, in particular the Weichselia-type communities, might have evolved into the moderntype mangroves, but factual evidence is as yet not enough for substantiating the hypothesis.
Pontederites eichhornioides is fragmentary, perhaps transported from a remote source. Minute fragile leaves Potamogetophyllum mite are found together with minute fruits Potamocarpites carinata indicating a nearby growth of potamogetonaceous weeds. The aquatic and semiaquatic plants of Qerofit/Qetura were of modern aspect allowing for ecological comparisons with their extant taxonomic allies. Typhacites negevensis suggests a reedmace-like marsh growth in still or sluggishly running water, occasionally penetrating the tide flats.
8) is found with Zeevlewya and matches in shape and dimensions the spindle-shaped fruit of the latter. It is slightly notched at the apex and bears two lateral rootlets at the lower end, as in the dispersed hypocotyls of viviparous mangroves that bear small protuberances of primordial leaf stipules and are often rooted by lateral roots rather than the suppressed radicle. Other finds of this type fossil seedlings are known from the Paleogene mangrove assemblage of London Clay, belonging to extinct mangrove genus Palaeobruguiera (Chandler, 1925) and extant Ceriops (Wilkinson, 1981).