OF RARE BLUE IVORY
CROSS-SECTION CUT AND POLISHED
Steinhatchee River - Florida, U.S.A.
PLEISTOCENE PERIOD: 1.8 million - 10,000 years ago
Mastodon ivory is
far more rare than mammoth ivory. Finding complete dense tusks
that can be cut and polished so that the ENTIRE round section of the
tusk remains intact is not common.
The RAREST OF ALL FOSSIL IVORY COLORS IS BLUE which this tusk is made of.
This is a complete circular tusk cross-section from a Mammut americanum
or 'American' mastodon. It is very dense and stabile with the end
that was sawn, polished to show the mesmerizing grain and stunning blue
overtones. High grade North American Mastodon fossils have
continued to appreciate in price over the recent years. Globally
speaking, the fossil-bearing rivers that produce Mastodon remains are
extremely limited. Increasing legislation to protect and close
these rivers from collecting along with prior years of collecting
pressure make for a constant shortage of high grade specimens.
Absolutely TOP GRADE! It
is INTACT and
WITH NO RESTORATION AND NO REPAIR.
Old private collection as
this river is now protected and off-limits to fossil hunting!
Emerging 55 million
years ago, the group of mammals called proboscideans are identified by
the presence of tusks and a trunk and comprise three families:
Mammutidae, Gomphotheriidae and Elephantidae. In Florida, the
mastodon, a member of the family Mammutidae (mammoths are members of
Elephantidae), represents one of two of the oldest known proboscideans
first dating back to the Miocene. They
became extinct 11,000 years ago along with all other proboscideans in
When standing aside a
mammoth, the mastodon looks just like a Neanderthal version of the
proboscideans. The body form is shorter, more stout and robust and
lends itself to a much more muscular physique in contrast to the more
graceful and taller mammoth. The cheek teeth of mastodons are also
more primitive with sharp crests and a dramatic lobed surface in unworn
examples compared to the flat and fine ridged surface of mammoth teeth
that resemble the sole of a boating sneaker. These differences
tell us about the types of food that both types of creatures ate.
The mastodon was more suited for forest environments with teeth that
were well adapted for chewing tougher vegetation like twigs, leaves,
shrubs, fruits, pinecones, pine needles and mosses. The mammoth
with its smoother teeth, was best suited for the open plains feeding on
a variety of grasses.
A mastodon, like all
proboscideans, has a system of horizontal tooth replacement whereby new
molars erupt from the rear of the jaw and move forward. The most
worn teeth at the front, are pushed out of the jaw. Sometimes
while still in the jaw, the anterior portion of a worn front tooth is
broken off. These partial teeth are found as fossils along with
A baby proboscidean at
age 6, will have already had three sets of teeth. By 13 years of
age, the fourth set emerges followed by a fifth set at age 27
years. The final set of teeth come in around 43 years of age and
as it wears away, the animal eventually starves to death and dies on
average between 60 and 80 years of age. Interestingly, the animal's life is
limited by the fact that after the sixth set, no new teeth grow in to
replace the final worn down set and the animal is no longer able to chew
its food. This characteristic is still true of modern
IVORY IS FAR, FAR MORE RARE THAN MAMMOTH IVORY - THE RAREST OF THIS
3.25" long x
Item - One Only