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Dactylioceras Ammonite & Belemnite - Posidonia Shale
This is a partial ammonite (Dactylioceras) and a belemnite fossil (Youngibelus gigas) from the Posidonia Shale of Germany. It comes with an acrylic display stand.
Belemnites are probably the most well known extinct cephalopod after the ammonites. They lived during the Jurassic and Cretaceous periods and are fairly common fossils found throughout the world. They had a hard, internal, cone shaped structure that is often preserved as a fossil though it is not technically a shell. They had 10 arms but unlike modern squid these arms had small hooks instead of suckers.
Ammonites were predatory cephalopod mollusks that resembled squids with spiral shells. They are more closely related to living octopuses, though their shells resemble that of nautilus species. True ammonites appeared in the fossil record about 240 million years ago during the Triassic Period. The last lineages disappeared 65 million years ago at the end of the Cretaceous.
Belemnites are probably the most well known extinct cephalopod after the ammonites. They lived during the Jurassic and Cretaceous periods and are fairly common fossils found throughout the world. They had a hard, internal, cone shaped structure that is often preserved as a fossil though it is not technically a shell. They had 10 arms but unlike modern squid these arms had small hooks instead of suckers.
SPECIES
Dactylioceras & Youngibelus gigas
LOCATION
Holzmaden, Germany
FORMATION
Posidonia Shale
SIZE
Rock 16.1x6.4", Ammonite 3.9", Belemnite 4.6"
CATEGORY
SUB CATEGORY
ITEM
#69555
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