bockryan Posted May 21 Share Posted May 21 (edited) Hi everyone - seeing an example of fossilized kelp from the Miocene of California in the auction thread inspired me, so curious to see what's out there in terms of fossil algae. I unfortunately do not possess any (yet!). I should add that stromatolites are welcome but I think there are other threads for that! Edited May 21 by bockryan Link to comment Share on other sites More sharing options...
piranha Posted May 21 Share Posted May 21 Great topic! The first five examples are from the Order Phaeophyta (brown algae / kelp), middle-upper Miocene of the Monterey Formation, Santa Ynez Valley, California. The next two are Paleozoic examples with a provisional classification only for Fisherites (Problematica). The last two pictured are my all-time favorites. Grypania spiralis is approximately 1.9 billion years old and represents a primitive lineage of eukaryotic organisms. This example is highly unusual having Grypania scattered all over the surface with the filaments raised in 3D relief. The magnificent specimen of Cystoseirites partschii showcases the articulated apical and basal regions and also preserves some of the reproductive structures (conceptacles and receptacles). The apical portion which is shed annually, also preserves 3D pneumatocysts (air vessicles) that are present during fertile periods to provide flotation for optimal photosynthetic exchange. Julescraneia grandicornis Paleocystophora acuminata Paleocystophora plumosa Paleohalidrys dendritica Phaeophyta Indet. sp. Parka decipiens (2) - 2.5 cm Fisherites reticulatus - 15 cm Devonian - Carmyllie Series Ordovician - Kimmswick Fm Old Red Sandstone, Scotland Lincoln County, Missouri Grypania spiralis - 1.9 Gya Cystoseirites partschii Negaunee Iron Formation Late Oligocene - Southern Caucasus Marquette County, Michigan 11 Link to comment Share on other sites More sharing options...
bockryan Posted May 22 Author Share Posted May 22 Those are FANTASTIC! Did you collect any yourself? Link to comment Share on other sites More sharing options...
Kane Posted May 22 Share Posted May 22 Nice! All ours in the Devonian are nothing more than matted sludge! ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
piranha Posted May 22 Share Posted May 22 21 minutes ago, bockryan said: Those are FANTASTIC! Did you collect any yourself? I collected them all....with keystrokes and greenbacks! 1 Link to comment Share on other sites More sharing options...
bockryan Posted May 22 Author Share Posted May 22 12 minutes ago, piranha said: I collected them all....with keystrokes and greenbacks! Ha! That works just as well Link to comment Share on other sites More sharing options...
Misha Posted May 22 Share Posted May 22 Recently added this to my collection. Haven't ID'd all the individual elements though. Doushantuo Formation Guizhou People's Republic of China 3 Link to comment Share on other sites More sharing options...
TqB Posted May 22 Share Posted May 22 Fun topic! Cyclocrinites favus, Lower Silurian (Llandovery), South Wales. A gift from a fellow student a long time ago. (I found a couple but nowhere near as good. ) 6 Tarquin Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted May 27 Share Posted May 27 Cyclocrinites favus Lower Silurian (Llandovery), Craighead Inlier, Newlands, Girvan, Ayrshire. 3 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
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