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The 'shrimps' that are older than the dinosaurs(英国《每日邮报》20190704)

 
The 'shrimps' that are older than the dinosaurs: Prehistoric
crustaceans dating back 500 MILLION years are spotted in
a pond in China
The rare creatures, dubbed 'fairy shrimps', were found by a group of engineers in Jiangsu this week
An expert says they are actually different from modern shrimps despite being similar in appearance
Fossils indicate the ancestors of the species existed 530 million years ago in the Cambrian Period
Their eggs can survive being boiled and remain in soil for years before hatching, the expert explains
 
A type of ancient shrimp, which emerged more than 500 million years ago before the dawn of the dinosaurs, has
been spotted in China.
The rare species, referred to as 'fairy shrimps', could date back as far as the Cambrian Period and are related to,
but not the direct ancestors of, today's shrimp.
A troupe of them were spotted this week in a pond in the city of Lianyungang, Jiangsu Province, by several
engineers who were working nearby.
 
One of them, Liu Caikun, said he and his colleagues first saw several tadpoles in the pond on Tuesday and caught
them.
After putting them into a bucket, they discovered there were 'shrimps' swimming alongside the tadpoles, all
sporting red tails.
'We looked up some information online and thought they looked like fairy shrimps,' Mr Liu added.
An expert has confirmed to MailOnline that the creatures in question were indeed fairy shrimps.
Zhao Li, the director of the Insect Museum of West China, said the crustaceans were given the nickname because
of their colourful looks, but they are actually different from modern shrimps despite being similar in appearance.
Mr Zhao explained that fairy shrimps belong to the Anostraca genus, and unlike shrimps which fall under the
Decapoda genus, they don't have shells on their heads or in front of their chests.
In addition, most fairy shrimps are found to have 11 pairs of legs while modern shrimps have eight.
 
Zhao Li, the director of the Insect Museum of West China, has found a 530-million-year-old fossil believed to be of the
ancestors of fairy shrimps. This means the creatures are likely to have started
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ving on earth far earlier than the dinosaurs
 
y shrimps have a unique 'stroke' because they swim with their bellies up. Mr Zhao said: 'The discovery of fairy shrimps in
Lianyungang means that the freshwater in the area is clean and without contamination of heavy metals and pesticides'
 
shrimps were categorised as a new species in China after being discovered in the province of Yunnan in 2008
 
According to the expert, fairy shrimps have a short life span of two to three months and live in seasonal water
bodies.
Their eggs are said to have 'tenacious vitality'. They are able to remain in soil for a few year before hatching in
freshwater, and can even survive being boiled.
'Because they have these "skills", they lived through the Cretaceous Period when the dinosaurs went extinct and
started to thrive again after the Ice Age,' Mr Zhao said.
He added that he had found two fossils in museums, which are believed to be of the ancestors of fairy shrimps,
and they dated back about 530 million years to the Cambrian Period.
This means the creatures are likely to have started living on earth far earlier than the dinosaurs, which appeared
roughly 245 million years ago.
Mr Zhao also pointed out that fairy shrimps have a unique 'swimming stroke' because they move with their bellies
facing up.
Terrifying moment tiger pursues And apparently the creatures are also very picky in the water they inhabmotorcyclist through wildlife park it.
Mr Zhao said: 'The discovery of fairy shrimps in Lianyungang means that the freshwater in the area is clean and
without contamination of heavy metals and pesticides.'
Fairy shrimps were categorised as a new species in China after being discovered in the province of Yunnan in
2008.
Since then, they have been spotted around China in provinces including Henan, Hebei, Sichuan and Xinjiang.
 
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