Tag Archive for 'Green algae'

Coenobial microfossils from the Forteau Formation, including: (a, f) strut-form colonies, (b-e, h-k, m-o, s-u) plate-form colonies, and (g, l, p-r) ring-form colonies. Scale bar - 20 µm. Image credit: Thomas H.P. Harvey, doi: 10.1098/rspb.2023.1882.

510-Million-Year-Old Microfossils Shed Light on Cambrian Plankton

Oct 30, 2023 by News Staff

The 510-million-year-old fossils from the Forteau Formation of Newfoundland and Labrador, Canada, are microscopic, look like spiny balls connected together,...

An artist’s impression of Kimberella. Image credit: Oleg Kuznetsov, 3Depix.

Study: Ediacaran Animals Ate Green Algae and Bacteria

Nov 23, 2022 by Enrico de Lazaro

The oldest animals appear in the fossil record among Ediacaran biota communities. In new research, paleontologists from the Australian National University...

Protocodium sinense. Image credit: Chai et al., doi: 10.1186/s12915-022-01394-0.

Paleontologists Find 541-Million-Year-Old Green Alga Microfossils

Sep 21, 2022 by News Staff

Protocodium sinense is the first and oldest green alga species from the Ediacaran period (635-539 million years ago) to be preserved in three dimensions,...

Acetabularia jalakanyakae. Image credit: Felix Bast.

New Species of Green Alga Discovered

Mar 7, 2022 by Natali Anderson

Biologists have described a new species of the unicellular green algal genus Acetabularia from a rocky intertidal habitat of the Andaman and Nicobar Islands. Acetabularia...

Transcardial injection of green algae or cyanobacteria in Xenopus laevis tadpoles distributed these photosynthetic microorganisms throughout the CNS causing a light exposure-timed increase of the oxygen concentration upon illumination of the brain; during a general, brain-wide extinction of neuronal activity by sub-atmospheric oxygen levels, green algae, and cyanobacteria were able to reversibly and repetitively reinitiate the spike activity upon illumination, thereby demonstrating the capacity of these microorganisms to rescue brain activity by photosynthetic oxygen. Image credit: Özugur et al., doi: 10.1016/j.isci.2021.103158.

Study: Photosynthesizing Microorganisms Can Produce Oxygen in Brain Blood Vessels of Tadpoles

Oct 15, 2021 by News Staff

Biologists at the Ludwig-Maximilians-University Munich have developed a method that allows tadpoles of African clawed frogs (Xenopus laevis) to ‘breathe’...

Fossilized spores from the Early Ordivician deposits of Australia. Image credit: Strother & Foster, doi: 10.1126/science.abj2927.

480-Million-Year-Old Spores of Early Land Plants Found in Australia

Aug 13, 2021 by News Staff

Until now, the first fossil evidence of land plants was from the Devonian period (420 million years ago). However, molecular evidence suggests an earlier...