STUNNING IRIDESCENT QUENSTEDTICERAS AMMONITE CLUSTER FROM POLAND IN MATRIX

Lukow, Poland

MIDDLE JURASSIC (DOGGER) PERIOD:   175.6 - 161.2 million years ago

QUENSTEDTICERAS ammonites are plentiful on the market from Russia.  The majority of these are artificially placed on a sculpted matrix.  Literal boatloads of these are available in almost every fossil store and website.  We prefer more unique and certainly, natural specimens.  This is a 100% NATURAL death assemblage of QUENSTEDTICERAS ammonites from POLAND.  The genuine shell is still intact which shows a finely preserved white nacre.  This shell shoots off a rainbow of colors in light that the above photographs could not capture.  Drusy crystals show an inner chamber structure from a partial Quenstedticeras ammonite in the rock.  NO RESTORATION OR FABRICATION.  Unique provenance compared to common Russian examples.  RECOMMENDED!

Ammonites are extinct members of the Cephalopod class.  Modern members include nautilus, squid and octopus.  They first appeared during the Silurian Period (435 million to 410 million years ago) and were abundant and widespread in the seas of the Jurassic and Cretaceous periods (175 million to 65 million years ago).  Ammonites are important index fossils—that is, they often link the rock layer in which they are found to specific geological time periods.

Ammonites varied greatly in size.  The largest known as small as 2 cm (0.75 in) in diameter.  During the Jurassic and Cretaceous periods, ammonites evolved more streamlined shells for swimming and the structure of the shell became stronger.  Different shell shapes emerged as well, such as snail-like or uncoiled.   

The shells of ammonites had hollow chambers separated by walls called septa.  A tube called the siphuncle, connected the body with the chambers allowing the animal to fill them with water or air, changing its buoyancy in order to rise or drop in the ocean.  Only the last and largest chamber was occupied by the living animal.  

Ammonites probably lived for one to six years, with the majority living two to four years.  They fed on plankton (tiny free-floating organisms), sea lilies, and smaller orthoceras.  Although many fed off the ocean floor, others may have caught plankton while floating or swimming via jet propulsion, expelling water through a funnel-like opening to propel themselves in the opposite direction.

Because ammonites lived exclusively in marine environments, their presence also indicates the location of prehistoric seas.

100% NATURAL UNIQUE SITE FOR THIS SPECIES - AMAZING NATURAL RAINBOW COLORS!

2.25" x 1.75" with original matrix, main ammonite is .75" in width

SOLD     AMX-001     Actual Item - One Only

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