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11" Jurassic Ammonite Fossil With Stand - Sakaraha, Madagascar
This is a heavy, 11" wide ammonite fossil collected near Sakaraha in the Tulear Province of Madagascar. It is Jurassic (Oxfordian Stage) in age in age. There is not a lot of good identification material available for the species at this location, but the genus is likely Kranosphinctites or something very similar. The entire specimen weighs about 16 1/2lbs and has been lightly polished with some minor repair work.
About Ammonites
Ammonites were ancient marine cephalopods, similar to today's squids and octopuses, but with a defining feature: their distinctive, tightly coiled spiral shells. These shells, resembling those of modern nautiluses, served as both a protective home and a buoyancy aid, allowing ammonites to navigate the prehistoric seas with ease. First emerging around 240 million years ago in the Triassic Period, ammonites thrived for over 175 million years, adapting through numerous forms and sizes. As predatory creatures, they likely fed on smaller marine organisms, using their tentacles to capture prey. However, their long reign came to an end 65 million years ago at the close of the Cretaceous, coinciding with the mass extinction event that also eliminated the dinosaurs.
What an ammonite would have looked like while alive.
Ammonites were ancient marine cephalopods, similar to today's squids and octopuses, but with a defining feature: their distinctive, tightly coiled spiral shells. These shells, resembling those of modern nautiluses, served as both a protective home and a buoyancy aid, allowing ammonites to navigate the prehistoric seas with ease. First emerging around 240 million years ago in the Triassic Period, ammonites thrived for over 175 million years, adapting through numerous forms and sizes. As predatory creatures, they likely fed on smaller marine organisms, using their tentacles to capture prey. However, their long reign came to an end 65 million years ago at the close of the Cretaceous, coinciding with the mass extinction event that also eliminated the dinosaurs.
What an ammonite would have looked like while alive.
SPECIES
Kranosphinctites?
LOCATION
Near Sakaraha, Tulear Province, Madagascar
SIZE
11" wide, up to 4" thick, 16 1/2 lbs
CATEGORY
SUB CATEGORY
ITEM
#51260
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