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Stone Arts of Alaska has available marine invertebrate
fossils of Silurian, Devonian, and Permian age,
all from southeast Alaska.
Also, Tertiary non-marine fossil plants (at
bottom)
Hexagonaria ("honeycomb coral") - Middle Devonian
Taimyrophyllum ("kiwi coral") - Lower Devonian
Favosites ("stingray coral") - Lower Devonian
Zaphrensis ("horn coral") -
Permian
Gastropods snails - Middle Devonian,
Silurian
Stromatolites - Devonian, Silurian
Pelecypods - Silurian
Amphipora - Silurian
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Hexagonaria
Middle Devonian
Hexagonaria (called
Xystriphyllum by some paleontologists) was widespread during the
middle Devonian geologic period, approximately 380 million years ago.
Today, as fossils, it is also found at a number of sites worldwide.
It has been extinct for approximately 355 million years. This coral
was a shallow water animal that lived in colonies. Each cell of the
fossil material is the skeletal remains of a separate animal.
They were stationary predatory animals, filter feeders with tentacles, like
todays sea anemones. It is called Hexagonaria because
each cell is six-sided. It looks like honeycomb.
Hexagonaria specimen--collection Stone Arts
of Alaska, not for sale.
Individual museum quality specimens, $50 to $200
Stone Arts of Alaska can supply quantity amounts
of this attractive specimen material. Raw stone can be acquired
(look under "Honeycomb coral" in our Lapidary Page) but polished pieces make
better specimen material. Inexpensive, this material makes excellent
stock for museum gift shops.
Stick-on identification labels provided.
Hexagonaria
specimens for sale by the box
typical boxes are pictured below
specimens--machine-polished
10 specimens at $10 each
20 specimens at $5 each
(40 specimens at $2.50 each not pictured)
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Other Marine Invertebrates
Stone Arts of Alaska can supply individual
specimens, polished or unpolished, of the following items.
Prices range from $20 to $200. (The specimens pictured below
are in collection of Stone Arts of Alaska and are not for sale.)
Taimyrophyllum coral - Lower Devonian
Favosites Lower Devonian (for prices of
unpolished stone, look under "Stingray coral" in "Lapidary stone")
Zaphrensis horn coral - Permian
Gastropods snails - Middle Devonian,
Silurian
Stromatolites - Devonian
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Fossils in Aphrodite Marble -
Silurian
Polished slabs or boulders of Aphrodite marble
are excellent for museum display. Smaller display pieces may
also be purchased. See Finished Products - Indoor -
Decorator Stones.
Some Paleontology: This
marble, technically speaking, a fossiliferous limestone, contains
mostly pelecypods but also brachiopods, gastropods, stromatolites,
amphipora, cephalopods,
and more. The visually dominant pelecypods are
of the species Pycnodesma. They can be gigantic, as big as
eleven inches in length. Interestingly, this species has never been
found outside southeast Alaska.
The fossils in the Golden
variety of Aphrodite are amphipora (circles) and stromatolites
(swirls). Nearly extinct today, stomatolites are the world's oldest known fossil. Some found
in Australia date back more than three billion years. Stromatolites also
occur in Royal Aphrodite. All the living forms now seen as fossils in this stone
lived in a shallow sea during Silurian times, roughly 420 million
years ago. Some catastrophic event, perhaps an underwater
landslide or the deposition of silt from a nearby flooding river, brought about their sudden burial and death. They
fossilized as the limey mud that encapsulated them hardened into
stone. While the tectonic movement of the earth's
plates makes the exact location of this ancient sea impossible to
determine, some paleontologists believe it was close to the equator. Riding atop the earth's
semi-liquid mantle, the chunk of continental crust carrying these
fossilized tropical animals
docked
with the North American plate along the Alaskan shore sometime
during the Cretaceous or Jurassic Periods, 65 to 190 million years
ago.
Pelecypods
Pelecypod and Brachiopod
Stromatolites and Amphipora (Royal Aphrodite)
Amphipora (Golden Aphrodite)
Gastropods (Snails)
 
Cephalopod
Cephalopod
Non-Martine Tertiary Fossils
metasequoia and broad-leafed plant
fossils, Kuiu Island
Feel welcome to view our Alaskan fossil collection in Bellingham,
Washington.
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