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Title:
JMDMT #297 Microfossils of Cyanobacteria in Carbonaceous Meteorites
Description:
The James M. DuPont Meteorite Collection - loricae or thecae. These thecae are found in numerous phyla of algae: Euglenales (Trachelomonas, Strombomonas), Volvocales (Phacotus, Coccomonas), Dinophyceae (Peri- dinium, Dinophysis, Exuviella), and in numerous Chrysophyceae and Craspedo- monadinae.* The Chrysophyceae may have, in addition, a phase of dormancy or of resist- ance in the form of siliceous cysts or statospores. These cysts always have an endogenous origin, and may arise from a simple encystment of a vegetative cell, or, on the contrary, of a zygote resulting from a autogamy or from an isogamic fusion. The cysts of the Chrysophyceae are exclusively siliceous, and are of highly varied forms, but they exhibit a pore closed
Author:
h4ck3rm1k3
Tags:
Meteorite, Life, Fossils, Cyanobacteria, Carbonaceous,
JMDMT #297 Microfossils of Cyanobacteria in Carbonaceous Meteorites
Description:
The James M. DuPont Meteorite Collection - loricae or thecae. These thecae are found in numerous phyla of algae: Euglenales (Trachelomonas, Strombomonas), Volvocales (Phacotus, Coccomonas), Dinophyceae (Peri- dinium, Dinophysis, Exuviella), and in numerous Chrysophyceae and Craspedo- monadinae.* The Chrysophyceae may have, in addition, a phase of dormancy or of resist- ance in the form of siliceous cysts or statospores. These cysts always have an endogenous origin, and may arise from a simple encystment of a vegetative cell, or, on the contrary, of a zygote resulting from a autogamy or from an isogamic fusion. The cysts of the Chrysophyceae are exclusively siliceous, and are of highly varied forms, but they exhibit a pore closed
Author:
h4ck3rm1k3
Tags:
Meteorite, Life, Fossils, Cyanobacteria, Carbonaceous,
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