Organisms Refusing to Evolve Over Millions of Years, by Elysse Baumbach, 1/15/16
Several more cases of “extreme stasis” have turned up, calling
into question Darwin’s notion of constant, gradual change over millions of
years.
Earlier human migration: Science Magazine reports evidence of
mammoth bones in Siberia that indicate hunting and butchering by humans, 10,000
years earlier than evolutionists presumed people should have been up those cold
climes.
New Scientist’s headline reads, “Humans
adapted to Arctic life 10,000 years earlier
than thought.” The
bones are claimed to be 45,000 years old; that means that humans were
essentially the same as us—intelligent, adaptable and capable—for at least 8
times all recorded human history (actually, much longer: they believe upright,
thinking hominins existed for 1–2 million years).
That phrase “earlier than thought”
shows up a lot in evolutionary studies. It means that evolutionists are
surprised at cases of early appearance and stasis. This pattern stretches into
much longer time periods in the following examples.
Tree shrews refused to evolve for 34 million years, Science Magazine says. A new fossil
doubles its period of stasis. It has a “living fossil” story to tell:
Tree shrews are often held up as being living fossils, presumably very similar to
our own earliest primate ancestor.
The dearth of actual
fossils of these small tropical mammals, however, has meant that much of this
conclusion has been speculative. Li and Ni describe a new fossil tree shrew that is
exceedingly similar to the extant pen-tailed tree shrew (Ptilocercus lowii), yet twice as old as any previously
described sister taxa. The
fossil suggests that this tree shrew has gone nearly
unchanged since the Oligocene (over 34 million years ago).
Squid stasis for a much longer period was reported in Live Science. Belemnites are members
of the Cephalopod (head-foot) class that includes octopuses, squid and
cuttlefish.
Fossils found in Solnhofen, Germany (home of Archaeopteryx and other
exceptionally-detailed fossils of the Jurassic Period) show that one species
was already highly skilled. “Generally speaking, Acanthoteuthis’ fins
and bullet-shaped
body, much like modern squids’, suggest that it would be a good swimmer,” the article says.
The Jurassic is claimed to span from 200 to 145 million years
ago. Noting that cephalopods date back even farther, “500 million years,”
the article points out that squid like this possessed balance-sensing organs
(statocysts), muscles, cartilage, a digestive system, and 10 arms. Cephalopods
also exquisite eyes as complex as those of mammals, yet are not related to any
tetrapods in the evolutionary scheme.
For a type of animal that is abundant today, this squid had an
awful long time to evolve into something else, but it didn’t. Its statocysts,
for instance, “resembled structures found in pelagic
squid” that swim in the same oceans today.
Crustacean stasis: A division of crustaceans called branchiopods
includes many living species, including water fleas and fairy shrimp. Current Biology published a find
with a headline that tells all: “A 365-Million-Year-Old Freshwater
Community Reveals
Morphological and Ecological Stasis in Branchiopod Crustaceans.” This phylum dates to the
Cambrian Explosion. Early fossils of branchiopods have been found in fossil
beds as widely dispersed as Canada, Scotland and Sweden. This new find in
Belgium tops them all, yet look strangely familiar:
Here we report the
discovery of an ephemeral pool branchiopod community from the 365-million-year-old Strud
locality of Belgium. It is characterized by new
anostracans and spinicaudatans, closely
resembling extant species, and the earliest notostracan, Strudops goldenbergi.
These branchiopods
released resting eggs into the sediment in a manner similar to their modern representatives. We
infer that this reproductive strategy was critical to overcoming environmental
constraints such as seasonal desiccation imposed by living on land. The pioneer
colonization of ephemeral freshwater pools by branchiopods in the Devonian
was followed by
remarkable ecological and morphological stasis that persists to the present
day.
Comments
Darwin
proposed a fanciful theory of evolution. During his lifetime 1809 – 1882 he
spent his time cataloging the species and organized them into categories. He was
looking for a narrative to explain what he had cataloged. His theory of evolution was based on what had
been observed, but not proven. It is still an unproven theory.
If these
archeologists have dated their discoveries accurately, we have evidence that humans
were living and hunting 1 to 2 million years ago. That squares with the claim
to have found a 2 million year old mitochondrial eve in Africa.
This is
not settled science. So far, creation and evolution remain unproven but our
advances in genetics and further finds should help to add facts to this puzzle.
Funding will be harder as we slide into global recession. This science is
interesting but not critical.
Norb
Leahy, Dunwoody GA Tea Party Leader
No comments:
Post a Comment