https://www.news.com.au/technology/science/archaeology/china-seaweed-oldest-green-plant-fossil/news-story/783fd882ef23e7894ca16f77e34783b7

China seaweed ‘oldest green plant fossil’
One-billion-year-old fossils discovered in China are believed to be the oldest fossils of a green plant ever found.

Scientists have spotted in rocks from northern China what may be the oldest fossils of a green plant ever found – tiny seaweed that carpeted areas of the sea floor roughly one billion years ago and were part of a primordial revolution among life on Earth.
Researchers said the plant, called Proterocladus antiquus, was about the size of a rice grain and boasted numerous thin branches, thriving in shallow water while attached to the sea floor with a root-like structure.
It may seem small, but Proterocladus – a form of green algae – was one of the largest organisms of its time, sharing the seas mainly with bacteria and other microbes.
It engaged in photosynthesis, transforming energy from sunlight into chemical energy and producing oxygen.

dv said:

https://www.news.com.au/technology/science/archaeology/china-seaweed-oldest-green-plant-fossil/news-story/783fd882ef23e7894ca16f77e34783b7

China seaweed ‘oldest green plant fossil’
One-billion-year-old fossils discovered in China are believed to be the oldest fossils of a green plant ever found.

Scientists have spotted in rocks from northern China what may be the oldest fossils of a green plant ever found – tiny seaweed that carpeted areas of the sea floor roughly one billion years ago and were part of a primordial revolution among life on Earth.
Researchers said the plant, called Proterocladus antiquus, was about the size of a rice grain and boasted numerous thin branches, thriving in shallow water while attached to the sea floor with a root-like structure.
It may seem small, but Proterocladus – a form of green algae – was one of the largest organisms of its time, sharing the seas mainly with bacteria and other microbes.
It engaged in photosynthesis, transforming energy from sunlight into chemical energy and producing oxygen.

> A one-billion-year-old multicellular chlorophyte

Does that make it the oldest multicellular organism?

mollwollfumble said:

dv said:

https://www.news.com.au/technology/science/archaeology/china-seaweed-oldest-green-plant-fossil/news-story/783fd882ef23e7894ca16f77e34783b7

China seaweed ‘oldest green plant fossil’
One-billion-year-old fossils discovered in China are believed to be the oldest fossils of a green plant ever found.

Scientists have spotted in rocks from northern China what may be the oldest fossils of a green plant ever found – tiny seaweed that carpeted areas of the sea floor roughly one billion years ago and were part of a primordial revolution among life on Earth.
Researchers said the plant, called Proterocladus antiquus, was about the size of a rice grain and boasted numerous thin branches, thriving in shallow water while attached to the sea floor with a root-like structure.
It may seem small, but Proterocladus – a form of green algae – was one of the largest organisms of its time, sharing the seas mainly with bacteria and other microbes.
It engaged in photosynthesis, transforming energy from sunlight into chemical energy and producing oxygen.

> A one-billion-year-old multicellular chlorophyte

Does that make it the oldest multicellular organism?

Seems not. Francevillian biota is around 2 billion years old

I probably should’ve started a thread yesterday instead of putting the ABC’s version of this and the photo in chat.

Sorry.

Michael V said:

I probably should’ve started a thread yesterday instead of putting the ABC’s version of this and the photo in chat.

Sorry.

We all make mistakes but it is important not to be a slave to regret.

dv said:

Michael V said:

I probably should’ve started a thread yesterday instead of putting the ABC’s version of this and the photo in chat.

Sorry.

We all make mistakes but it is important not to be a slave to regret.

That’s all well and good with the advice, dv; but that isn’t the forum way. We need to shame him into doing better.

dv said:

Michael V said:

I probably should’ve started a thread yesterday instead of putting the ABC’s version of this and the photo in chat.

Sorry.

We all make mistakes but it is important not to be a slave to regret.

Thank you. Your wisdom is accepted and respected.

sibeen said:

dv said:

Michael V said:

I probably should’ve started a thread yesterday instead of putting the ABC’s version of this and the photo in chat.

Sorry.

We all make mistakes but it is important not to be a slave to regret.

That’s all well and good with the advice, dv; but that isn’t the forum way. We need to shame him into doing better.

G’donya.

:)

Michael V said:

dv said:

Michael V said:

I probably should’ve started a thread yesterday instead of putting the ABC’s version of this and the photo in chat.

Sorry.

We all make mistakes but it is important not to be a slave to regret.

Thank you. Your wisdom is accepted and respected.

suckup

sibeen said:

Michael V said:

dv said:

We all make mistakes but it is important not to be a slave to regret.

Thank you. Your wisdom is accepted and respected.

suckup

I have spoken

sibeen said:

Michael V said:

dv said:

We all make mistakes but it is important not to be a slave to regret.

Thank you. Your wisdom is accepted and respected.

suckup

Sorry. I didn’t realise I was doing that. I was just trying to be nice. And god knows that’s difficult.

dv said:

mollwollfumble said:

> A one-billion-year-old multicellular chlorophyte

Does that make it the oldest multicellular organism?

Seems not. Francevillian biota is around 2 billion years old

Thanks for that. While talking ancient organisms:

What’s the difference between a Strombatolite (Shark Bay) and a Thrombolite (Lake Clifton).

mollwollfumble said:

dv said:

mollwollfumble said:

> A one-billion-year-old multicellular chlorophyte

Does that make it the oldest multicellular organism?

Seems not. Francevillian biota is around 2 billion years old

Thanks for that. While talking ancient organisms:

What’s the difference between a Strombatolite (Shark Bay) and a Thrombolite (Lake Clifton).

They are pretty damn similar but according to wikipedia, “Thrombolites have a clotted structure which lacks the laminae of stromatolites and each clot within a thrombolite mound is a separate cyanobacterial colony”.

mollwollfumble said:

dv said:

mollwollfumble said:

> A one-billion-year-old multicellular chlorophyte

Does that make it the oldest multicellular organism?

Seems not. Francevillian biota is around 2 billion years old

Thanks for that. While talking ancient organisms:

What’s the difference between a Strombatolite (Shark Bay) and a Thrombolite (Lake Clifton).

Structure.

Thrombolites have a clotted structure which lacks the laminae of stromatolites and each clot within a thrombolite mound is a separate cyanobacterial colony.

The clots are on the scale of millimetres to centimetres and may be interspersed with sand, mud or sparry carbonate. The larger clots make up more than 40% of a thrombolite’s volume and each clot has a complex internal structure of cells and rimmed lobes resulting primarily from the in-situ calcification of the cyanobacterial colony.

Very little sediment is found within the clots as the main growth method is calcification rather than sediment trapping.

https://en.wikipedia.org/wiki/Thrombolite

Also note spelling: stromatolite, not as above (strombatolite).

BTW the Francevillian biota seem to have disappeared without descendants. There were a number of “false starts” in the field of multicellularity. There are advantages and disadvantages.