Right at the bottom of the deep sea, the first very simple forms of life on Earth probably emerged a long time ago. Today, the deep sea is known for its bizarre fauna. Intensive research is being conducted into how the number of species living on the sea floor have changed in the meantime.
Some theories say that the ecosystems of the deep sea have emerged again and again after multiple mass extinctions and oceanic upheavals. Today's life in the deep sea would thus be comparatively young in the history of the Earth. But there is increasing evidence that parts of this world are much older than previously thought.
For comparison, the scientists recorded morphological characteristics of the spines, such as shape and length, and determined the thickness of around 170 spines from each of two time periods. As an indicator of the total mass of the sea urchins in the habitat—their biomass—they determined the amount of spiny material in the sediments.
Österreich Neuesten Nachrichten, Österreich Schlagzeilen
Similar News:Sie können auch ähnliche Nachrichten wie diese lesen, die wir aus anderen Nachrichtenquellen gesammelt haben.
Report says Dutch government spends billions on subsidies for fossil fuel producers and usersA new report says the Dutch government spends some 37.5 billion euros — about $40.5 billion — a year in subsidies to industries that use fossil fuels.
Weiterlesen »
Report says Dutch government spends billions on subsidies for fossil fuel producers and usersA new report says the Dutch government spends some 37.5 billion euros — about $40.5 billion — a year in subsidies to industries that use fossil fuels
Weiterlesen »
Volkswagen is ready for Europe's 2035 fossil-fuel car banVolkswagen is ready for Europe's planned 2035 ban on new sales of fossil-fuel cars as it ramps up its electric vehicle lineup, Chief Executive Oliver Blume said at Munich's IAA mobility show.
Weiterlesen »
Fossil of oldest-known koala relative unearthed in central AustraliaA small team of evolutionary biologists at Flinders University, in Australia, working with one colleague from the University of Salford in the U.K. and another from the University of California, Los Angeles, has found fossilized evidence of the oldest-known koala relative in a central part of Australia. In their paper, published in the journal Scientific Reports, the group describes the fossil, where it was found and how it fits into the history of marsupial evolution in Australia.
Weiterlesen »
500 Groups Endorse NYC March to End Fossil FuelsSept. 17 March Urges Biden to Declare Climate Emergency, Phase Out Fossil Fuels
Weiterlesen »
Biden admin quietly reverses Trump-era rule, bans transporting fossil fuels by trainThe Department of Transportation quietly moved to ban the transportation of liquefied natural gas via rail in a major victory for environmental groups.
Weiterlesen »