A species of bacteria that lived 407 million years ago would have flourished among early land plants.
Detailed 3D reconstructions of fossils discovered in Scotland are helping scientists to understand more about howCyanobacteria evolved early in our planet's history and played a significant role in shaping life as we know it.
Dr. Christine Strullu-Derrien, a Scientific Associate at the Museum and lead author of the study says,"With the 3D reconstructions, we were able to see evidence of branching, which is a characteristic of Hapalosiphonacean cyanobacteria. This is exciting because it means that these are the earliest cyanobacteria of this type found on land."Cyanobacteria are an ancient group of microorganisms.
Cyanobacteria probably originated in freshwater environments, so scientists believe they started to colonize land early in their history. The original descriptions were based on specimens in the Museum's collections, but more recently, similar specimens discovered in the collections of the Sorbonne University in Paris were found to be from the same species.
One of the main characteristics of this type of bacteria is the presence of what is known as"true branching." This occurs when individual bacteria grow alongside each other in a line, with some lines breaking off in different directions to create a branching structure.are relatively common in the Rhynie Chert, many do not display this true branching. By finding it in L. scourfieldii, researchers could confirm the bacteria's presence in this ecosystem.
That said, its biodiversity would have looked very different, as the Early Devonian was before forests and vertebrates started to become dominant on land.
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