|
|
|
RARE TYPE TOWER OF FINEST GRADE LARGE TRIPLE AMMONITE FOSSILS ON MATRIX Central High Atlas Mountains, Morocco MIDDLE JURASSIC PERIOD (LOWER BAJOCIAN): 172 - 168 million years ago This is an amazing decorator display fossil as much as it would be an unusual and rare addition to any advanced ammonite collection. Specimens like this are very, very seldom available and collecting efforts are done on a small scale, often yielding a very limited quantity of these uncommon and large ammonite fossils from the region. A rare opportunity brought about a very fortunate event whereby we were able to secure an exceptional and rare small collection of these beautiful Jurassic ammonite fossils from the Atlas Mountains. The rarity of these specimens cannot be overstated. Their completeness and quality of preservation EXCEEDS anything seen from this region in professional scientific and museum collections. Not only are these ammonite fossils we are offering from this collection beautiful to look at, they are extremely uncommon and exceedingly rare to the most advanced collector. This is the very first time we have offered this kind and quality with future availability being questionable, at best. This remarkable triple species cephalopod specimen includes large examples on their host rock in full three dimensional form. Most interesting with this fossil ammonite tower is the fact that it can be viewed from several perspectives. This would make it perfect to put out on a table in a room as the ammonites are positioned in varying angles around the mountain of matrix so it can be viewed from different positions simultaneously. There are three complete and very rare ammonites on the rock. All ammonites are wonderfully preserved in a fully inflated form. The ammonite species include, from top to bottom, a giant (largest of the total shipment of specimens!) Calliphylloceras sp. with gorgeous micro-fine shell detail still intact (see second to last photo), a Stephanoceras sp. and a Shirbuirnia trigonalis. The rock matrix elevates the group naturally and offers a superb multi-dimensional display that MUST be seen in person to fully grasp and appreciate. This exceptional fossil ammonite group is far nicer than they appear in the photos. These species are found together in the Middle Jurassic Bajocian sediments of the Central High Atlas mountains in Morocco. Each ammonite shows rare shell detail as well as full inflation with no distortion. Perfect to accompany any advanced fossil marine life collection as well as a stunning and highly unique interior design fossil of pure natural history!
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,
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. VERY RARE AMMONITE GROUPING - HIGHLY AESTHETIC DISPLAY SPECIMEN WITH EXTREME APPEAL AND DIMENSION! 7.5" across and 12.75" high overall with matrix, fossils are 7", 5.25" and 5" across SOLD AMX-092 Actual Item - One Only |
| 1195 |
