News / Science & Technology

Scientists Discover Ancient Shrimp Had Heart

The entire cardiovascular system in the Fuxianhuia protensa fossil. (Credit: Xiaoya Ma)
The entire cardiovascular system in the Fuxianhuia protensa fossil. (Credit: Xiaoya Ma)
Rosanne Skirble
Scientists have discovered the world's earliest known cardiovascular system - heart and blood vessels - in the fossil of a shrimp-like creature from more than 500 million years ago. The rare find sheds new light on the evolutionary timeline of life on Earth.

The Yunnan Province in southwestern China is known for rich fossil deposits, but researchers had not expected a fossil so exquisitely preserved as the specimen of the 520-million-year-old shrimp-like species.

Researcher Peiyun Cong with the Yunnan Laboratory for Paleobiology unearthed the fossil, which gave researchers the first detailed image of the creature's circulatory system.

“[The fossil] is a beautiful carbon trace," said University of Arizona neuroscientist and team member Nicholas Strausfeld. "It is bilaterally symmetrical. It shows the dorsal blood vessel and the lateral vascular components, the arteries, the lateral arteries and then a very, very, beautiful, system of arteries over where the brain sits in the head.”
 
LISTEN: Scientists Discover Ancient Shrimp Had Heart
Scientists Discover Ancient Shrimp Had Hearti
|| 0:00:00
...    
🔇
X

In earlier research with fossils of the same species, the scientists on this project had identified its brain, gut and nervous system.

Strausfeld says it is common to see fossils with imprints of teeth, shell and bone, but no soft tissues because they decay first when a creature dies. He explains how the internal organs may have fossilized.

“We assume that the specimens became entombed by a very sudden event - a sudden burial, maybe an underwater landslide, maybe something to do with a tsunami, who knows, maybe a very, very heavy dust fall out from a storm," he said. "And, then this chemical preservation of the internal tissue as it was squashed flat.”  
The dorsal view of the 7-centimeter long fossil was found in sediments dating back 520 million years ago in what today is China’s Yunnan province. (Credit: Xiaoya Ma)The dorsal view of the 7-centimeter long fossil was found in sediments dating back 520 million years ago in what today is China’s Yunnan province. (Credit: Xiaoya Ma)
This ancient marine species dates from the Cambrian period, a time in Earth’s history when major animal groups began to appear with a huge variety of shapes and forms. Strausfeld says the organ systems detailed in this study are easily recognizable in today's crustaceans.

“It suggests that already 520 million years ago, the basic layout, what we call the ground pattern, of say a vascular system, had already evolved," he said. "And the ground pattern persists until this day in modified forms.”

If we see this ancient shrimp as modern, then, Strausfeld asks, who was the ancestor that gave rise to its sophisticated and very elaborate set of organs?

“This is not going to be easy [to answer] because we do not really have access to any older deposits," Strausfeld said. "So what we hope to find in these Chengjiang deposits in China are fossils of organisms that clearly were already ancient by that time, and that might give us a lead into how these more elaborate systems, these very recognizable elaborate systems, how these systems maybe originated.”

You May Like

Will Cuba Follow the Southeast Asia Model?

Decision to restore ties between US and Cuba has some debating whether it will lead to an enhancement or regression of democracy on the Communist island nation More

Kenyan Designer Finds Her Niche in Fashion Industry

‘Made in China’ fabrics underlie her success More

Report: CIA, Israel's Mossad Killed Senior Hezbollah Commander

The Washington Post story says Imad Mughniyah was killed instantly by a bomb "triggered remotely" from Tel Aviv by Mossad agents More

This forum has been closed.
Comment Sorting
Comments
     
by: Babu G. Ranganathan from: Boyertown, PA (USA)
April 09, 2014 9:18 AM
NOT MADE BY NATURE! Just because something exists in nature doesn't mean it was invented or made by Nature. If all the chemicals necessary to make a cell were left to themselves, "Mother Nature" would have no ability to organize them into a cell. It requires an already existing cell to bring about another cell. The cell exists and reproduces in nature but Nature didn't invent or design it! Nature didn't originate the cell or any form of life. An intelligent power outside of nature had to be responsible.

Natural laws can explain how an airplane or living cell works, but it's irrational to believe that mere undirected natural laws can bring about the origin of an airplane or a cell. Once you have a complete and living cell then the genetic program and biological machinery exist to direct the formation of more cells, but how could the cell have originated naturally when no directing code and mechanisms existed in nature? All of the founders of modern science believed in God. Read my Internet article: HOW FORENSIC SCIENCE REFUTES ATHEISM

Only evolution within "kinds" is genetically possible (i.e. varieties of dogs, cats, etc.), but not evolution across "kinds" (i.e. from sea sponge to human). How did species survive if their vital tissues, organs, reproductive systems were still evolving? Survival of the fittest would actually have prevented evolution across kinds! Read my Internet article: WAR AMONG EVOLUTIONISTS! (2nd Edition). I discuss: Punctuated Equilibria, "Junk DNA," genetics, mutations, natural selection, fossils, genetic and biological similarities between species.

Natural selection doesn't produce biological traits or variations. It can only "select" from biological variations that are possible and which have survival value. The real issue is what biological variations are possible, not natural selection. Only limited evolution, variations of already existing genes and traits are possible. Nature is mindless and has no ability to design and program entirely new genes for entirely new traits.

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Jefferson's Library Continues to Impress, 200 Years Lateri
X
Deborah Block
January 31, 2015 12:12 AM
Two hundred years after the U.S. Congress purchased a huge collection of books belonging to former President Thomas Jefferson, it remains one of America’s greatest literal treasures and has become the centerpiece of Washington’s Library of Congress. VOA’s Deborah Block reports.
Video

Video Jefferson's Library Continues to Impress, 200 Years Later

Two hundred years after the U.S. Congress purchased a huge collection of books belonging to former President Thomas Jefferson, it remains one of America’s greatest literal treasures and has become the centerpiece of Washington’s Library of Congress. VOA’s Deborah Block reports.
Video

Video Egypt's Suez Canal Dreams Tempered by Continued Unrest

Egypt plans to expand the Suez Canal, raising hopes that the end of its economic crisis may be in sight. But some analysts say they expect the project may cost too much and take too long to make life better for everyday Egyptians. VOA's Heather Murdock reports.
Video

Video Threat of Creeping Lava Has Hawaiians on Edge

Residents of the small town of Pahoa on the Big Island of Hawaii face an advancing threat from the Kilauea volcano. Local residents are keeping a watchful eye on creeping lava. Mike O’Sullivan reports.
Video

Video Pro-Kremlin Youth Group Creatively Promotes 'Patriotic' Propaganda

As Russia's President Vladimir Putin faces international pressure over Ukraine and a failing economy, unofficial domestic groups are rallying to his support. One such youth organization, CET, or Network, uses creative multimedia to appeal to Russia's urban youth with patriotic propaganda. VOA's Daniel Schearf reports.
Video

Video Filmmakers Produce Hand-Painted Documentary on Van Gogh

The troubled life of the famous 19th century Dutch painter Vincent van Gogh has been told through many books and films, but never in the way a group of filmmakers now intends to do. "Loving Vincent " will be the first ever feature-length film made of animated hand-painted images, done in the style of the late artist. VOA’s George Putic reports.
Video

Video Issues or Ethnicity? Question Divides Nigeria

As Nigeria goes to the polls next month, many expect the two top presidential contenders to gain much of their support from constituencies organized along ethnic or religious lines. But are faith and regional blocs really what political power in Nigeria is about? Chris Stein reports.
Video

Video Rock-Consuming Organisms Alter Views of Life Processes

Scientists thought they knew much about how life works, until a discovery more than two decades ago challenged conventional beliefs. Scientists found that there are organisms that breathe rocks. And it is only recently that the scientific community is accepting that there are organisms that could get energy out of rocks. Correspondent Elizabeth Lee reports.
Video

Video Paris Attacks Highlight Global Weapons Black Market

As law enforcement officials piece together how the Paris and Belgian terror cells carried out their recent attacks, questions are being asked about how they obtained military grade assault weapons - which are illegal in the European Union. As VOA's Jeff Swicord reports, experts say there is a very active worldwide black market for these weapons, and criminals and terrorists are buying.
Video

Video Activists Accuse China of Targeting Religious Freedom

The U.S.-based Chinese religious rights group ChinaAid says 2014 was the worst year for religious freedom in China since the end of the Cultural Revolution. As Ye Fan reports, activists say Beijing has been tightening religious controls ever since Chinese leader Xi Jinping came to office. Hu Wei narrates.
Video

Video Theologians Cast Doubt on Morality of Drone Strikes

In 2006, stirred by photos of U.S. soldiers mistreating Iraqi prisoners, a group of American faith leaders and academics launched the National Religious Campaign Against Torture. It played an important role in getting Congress to investigate, and the president to ban, torture. VOA's Jerome Socolovsky reports.
Video

Video Former Sudan 'Lost Boy' Becomes Chess Master in NYC

In the mid-1980’s, thousands of Sudanese boys escaped the country's civil war by walking for weeks, then months and finally for more than a year, up to 1,500 kilometers across three countries. The so-called Lost Boys of the Sudan had little time for games. But one of them later mastered the game of chess, and now teaches it to children in the New York area. VOA’s Bernard Shusman in New York has his story.
Video

Video NASA Monitors Earth’s Vital Signs From Space

The U.S. space agency, NASA, is wrapping up its busiest 12-month period in more than a decade, with three missions launched in 2014 and two this month, one in early January and the fifth scheduled for January 29. As VOA’s Rosanne Skirble reports, the instruments being lifted into orbit are focused on Earth’s vital life support systems and how they are responding to a warmer planet.

Circumventing Censorship

An Internet Primer for Healthy Web Habits

As surveillance and censoring technologies advance, so, too, do new tools for your computer or mobile device that help protect your privacy and break through Internet censorship.
More

All About America

AppleAndroid