https://onlinelibrary.wiley.com/doi/10.1111/pala.12242
"Abstract
The early Ediacaran Lantian Formation in South China contains some of
the oldest known representatives of morphologically complex
macroorganisms, including various macroalgae and putative animals. The macroalgal fossils have been described previously in several
publications, but no taxonomic treatment has been published for the
putative animal fossils. This hampers our ability to fully evaluate and communicate the significance of these potentially important Ediacaran macrofossils. To address this deficiency, here we provide a systematic description of these putative animal fossils from the Lantian Formation, including four new genera and five new species: Lantianella laevis gen.
et sp. nov., L. annularis gen. et sp. nov., Piyuania cyathiformis gen.
et sp. nov., Qianchuania fusiformis gen. et sp. nov. and Xiuningella
rara gen. et sp. nov. Morphological comparisons of these fossils and potential modern analogues are provided and critically assessed."
This is an article I missed (2016) that describes very-well preserved fossils in the Lantian formation.-a Among other hard-to-assign specimens
is a conical specimen consisting of a basal holdfast and topped with structures strongly suggesting tentacles.-a The resemblance to cnidarians
is unmistakable.-a The authorship has strong credentials in Ediacaran research.
On 11/5/24 8:48 AM, erik simpson wrote:All true, they're only ~10 My after the Doushantuo. Any further with a particular phylum identification is bound to be uncertain.
https://onlinelibrary.wiley.com/doi/10.1111/pala.12242
"Abstract
The early Ediacaran Lantian Formation in South China contains some of
the oldest known representatives of morphologically complex
macroorganisms, including various macroalgae and putative animals. The
macroalgal fossils have been described previously in several
publications, but no taxonomic treatment has been published for the
putative animal fossils. This hampers our ability to fully evaluate
and communicate the significance of these potentially important
Ediacaran macrofossils. To address this deficiency, here we provide a
systematic description of these putative animal fossils from the
Lantian Formation, including four new genera and five new species:
Lantianella laevis gen. et sp. nov., L. annularis gen. et sp. nov.,
Piyuania cyathiformis gen. et sp. nov., Qianchuania fusiformis gen. et
sp. nov. and Xiuningella rara gen. et sp. nov. Morphological
comparisons of these fossils and potential modern analogues are
provided and critically assessed."
This is an article I missed (2016) that describes very-well preserved
fossils in the Lantian formation.-a Among other hard-to-assign
specimens is a conical specimen consisting of a basal holdfast and
topped with structures strongly suggesting tentacles.-a The resemblance
to cnidarians is unmistakable.-a The authorship has strong credentials
in Ediacaran research.
If they're metazoans, they might be the oldest metazoan fossils, though apparently they're roughly contemporaneous with the Doushantuo biota.
On 11/5/24 10:06 AM, John Harshman wrote:of the oldest known representatives of morphologically complex
On 11/5/24 8:48 AM, erik simpson wrote:
https://onlinelibrary.wiley.com/doi/10.1111/pala.12242
"Abstract
The early Ediacaran Lantian Formation in South China contains some
preserved fossils in the Lantian formation. Among other hard-to-assign specimens is a conical specimen consisting of a basal holdfast and
This is an article I missed (2016) that describes very-well
though apparently they're roughly contemporaneous with the Doushantuo biota.
If they're metazoans, they might be the oldest metazoan fossils,
All true, they're only ~10 My after the Doushantuo. Any further witha particular phylum identification is bound to be uncertain.
On 11/5/24 10:06 AM, John Harshman wrote:of the oldest known representatives of morphologically complex macroorganisms, including various macroalgae and putative animals. The macroalgal fossils have been described previously in several
On 11/5/24 8:48 AM, erik simpson wrote:
https://onlinelibrary.wiley.com/doi/10.1111/pala.12242
"Abstract
The early Ediacaran Lantian Formation in South China contains some
publications, but no taxonomic treatment has been published for the
putative animal fossils. This hampers our ability to fully evaluate and communicate the significance of these potentially important Ediacaran macrofossils. To address this deficiency, here we provide a systematic description of these putative animal fossils from the Lantian Formation, including four new genera and five new species: Lantianella laevis gen.
et sp. nov., L. annularis gen. et sp. nov., Piyuania cyathiformis gen.
et sp. nov., Qianchuania fusiformis gen. et sp. nov. and Xiuningella
rara gen. et sp. nov. Morphological comparisons of these fossils and potential modern analogues are provided and critically assessed."
preserved fossils in the Lantian formation.-a Among other hard-to-assign specimens is a conical specimen consisting of a basal holdfast and
This is an article I missed (2016) that describes very-well
topped with structures strongly suggesting tentacles.-a The resemblance
to cnidarians is unmistakable.-a The authorship has strong credentials in Ediacaran research.
though apparently they're roughly contemporaneous with the Doushantuo
If they're metazoans, they might be the oldest metazoan fossils,
biota.
All true, they're only ~10 My after the Doushantuo.-a Any further witha particular phylum identification is bound to be uncertain.
I belatedly remember that lophophorated also have tencacle-like structures.-a If the fossils are lophophorates, that would move the
origin of cnidarians comfortably forward in the Ediacaran, about the
time the probable tunicates appeared. I belatedly remember that lophophorated also have tencacle-like structures.-a If the fossils are lophophorates, that would move the origin of cnidarians comfortably
forward in the Ediacaran, about the time the probable tunicates appeared.
On 11/6/24 3:33 PM, erik simpson wrote:https://link.springer.com/article/10.1007/s12542-021-00596-1
On 11/5/24 10:06 AM, John Harshman wrote:some of the oldest known representatives of morphologically complex
On 11/5/24 8:48 AM, erik simpson wrote:
https://onlinelibrary.wiley.com/doi/10.1111/pala.12242
"Abstract
The early Ediacaran Lantian Formation in South China contains
macroorganisms, including various macroalgae and putative animals. The
macroalgal fossils have been described previously in several
publications, but no taxonomic treatment has been published for the
putative animal fossils. This hampers our ability to fully evaluate
and communicate the significance of these potentially important
Ediacaran macrofossils. To address this deficiency, here we provide a
systematic description of these putative animal fossils from the
Lantian Formation, including four new genera and five new species:
Lantianella laevis gen. et sp. nov., L. annularis gen. et sp. nov.,
Piyuania cyathiformis gen. et sp. nov., Qianchuania fusiformis gen. et
sp. nov. and Xiuningella rara gen. et sp. nov. Morphological
comparisons of these fossils and potential modern analogues are
provided and critically assessed."
preserved fossils in the Lantian formation.-a Among other
This is an article I missed (2016) that describes very-well
hard-to-assign specimens is a conical specimen consisting of a basal
holdfast and topped with structures strongly suggesting tentacles.
The resemblance to cnidarians is unmistakable.-a The authorship has
strong credentials in Ediacaran research.
though apparently they're roughly contemporaneous with the Doushantuo
If they're metazoans, they might be the oldest metazoan fossils,
biota.
All true, they're only ~10 My after the Doushantuo.-a Any furtherwith a particular phylum identification is bound to be uncertain.
I belatedly remember that lophophorated also have tencacle-like
structures.-a If the fossils are lophophorates, that would move the
origin of cnidarians comfortably forward in the Ediacaran, about the
time the probable tunicates appeared. I belatedly remember that
lophophorated also have tencacle-like structures.-a If the fossils are
lophophorates, that would move the origin of cnidarians comfortably
forward in the Ediacaran, about the time the probable tunicates appeared.
Not familiar with any Ediacaran tunicates. What?
On 11/6/24 8:52 PM, John Harshman wrote:
On 11/6/24 3:33 PM, erik simpson wrote:https://link.springer.com/article/10.1007/s12542-021-00596-1
On 11/5/24 10:06 AM, John Harshman wrote:some of the oldest known representatives of morphologically complex
On 11/5/24 8:48 AM, erik simpson wrote:
https://onlinelibrary.wiley.com/doi/10.1111/pala.12242
"Abstract
The early Ediacaran Lantian Formation in South China contains
macroorganisms, including various macroalgae and putative animals.
The macroalgal fossils have been described previously in several
publications, but no taxonomic treatment has been published for the
putative animal fossils. This hampers our ability to fully evaluate
and communicate the significance of these potentially important
Ediacaran macrofossils. To address this deficiency, here we provide a
systematic description of these putative animal fossils from the
Lantian Formation, including four new genera and five new species:
Lantianella laevis gen. et sp. nov., L. annularis gen. et sp. nov.,
Piyuania cyathiformis gen. et sp. nov., Qianchuania fusiformis gen.
et sp. nov. and Xiuningella rara gen. et sp. nov. Morphological
comparisons of these fossils and potential modern analogues are
provided and critically assessed."
preserved fossils in the Lantian formation.-a Among other
This is an article I missed (2016) that describes very-well
hard-to-assign specimens is a conical specimen consisting of a basal
holdfast and topped with structures strongly suggesting tentacles.
The resemblance to cnidarians is unmistakable.-a The authorship has
strong credentials in Ediacaran research.
though apparently they're roughly contemporaneous with the Doushantuo
If they're metazoans, they might be the oldest metazoan fossils,
biota.
All true, they're only ~10 My after the Doushantuo.-a Any furtherwith a particular phylum identification is bound to be uncertain.
I belatedly remember that lophophorated also have tencacle-like
structures.-a If the fossils are lophophorates, that would move the
origin of cnidarians comfortably forward in the Ediacaran, about the
time the probable tunicates appeared. I belatedly remember that
lophophorated also have tencacle-like structures.-a If the fossils are
lophophorates, that would move the origin of cnidarians comfortably
forward in the Ediacaran, about the time the probable tunicates
appeared.
Not familiar with any Ediacaran tunicates. What?
On 11/7/24 8:02 AM, erik simpson wrote:According to Mary Droser, the first clearly bilaterians, about the size
On 11/6/24 8:52 PM, John Harshman wrote:
On 11/6/24 3:33 PM, erik simpson wrote:https://link.springer.com/article/10.1007/s12542-021-00596-1
On 11/5/24 10:06 AM, John Harshman wrote:some of the oldest known representatives of morphologically complex
On 11/5/24 8:48 AM, erik simpson wrote:
https://onlinelibrary.wiley.com/doi/10.1111/pala.12242
"Abstract
The early Ediacaran Lantian Formation in South China contains
macroorganisms, including various macroalgae and putative animals.
The macroalgal fossils have been described previously in several
publications, but no taxonomic treatment has been published for the
putative animal fossils. This hampers our ability to fully evaluate
and communicate the significance of these potentially important
Ediacaran macrofossils. To address this deficiency, here we provide
a systematic description of these putative animal fossils from the
Lantian Formation, including four new genera and five new species:
Lantianella laevis gen. et sp. nov., L. annularis gen. et sp. nov.,
Piyuania cyathiformis gen. et sp. nov., Qianchuania fusiformis gen.
et sp. nov. and Xiuningella rara gen. et sp. nov. Morphological
comparisons of these fossils and potential modern analogues are
provided and critically assessed."
preserved fossils in the Lantian formation.-a Among other
This is an article I missed (2016) that describes very-well
hard-to-assign specimens is a conical specimen consisting of a basal
holdfast and topped with structures strongly suggesting tentacles.
The resemblance to cnidarians is unmistakable.-a The authorship has
strong credentials in Ediacaran research.
Doushantuo biota.
If they're metazoans, they might be the oldest metazoan fossils, >>>> though apparently they're roughly contemporaneous with the
All true, they're only ~10 My after the Doushantuo.-a Any further >>>> with a particular phylum identification is bound to be uncertain.
I belatedly remember that lophophorated also have tencacle-like
structures.-a If the fossils are lophophorates, that would move the
origin of cnidarians comfortably forward in the Ediacaran, about the
time the probable tunicates appeared. I belatedly remember that
lophophorated also have tencacle-like structures.-a If the fossils
are lophophorates, that would move the origin of cnidarians
comfortably forward in the Ediacaran, about the time the probable
tunicates appeared.
Not familiar with any Ediacaran tunicates. What?
If correct, that pushes the origin of chordates way back, and thus of deuterostomes too. I'd like to see how the people competent to analyze
these fossils sort out.
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