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Crinoid Macrocrinus mundulus (?) by usageology on Flickr. Locality: Crawfordsville, Indiana, US Age: Lower Mississippian Size: Specimen is 3.6 inches across.

Crinoid Macrocrinus mundulus (?) by usageology on Flickr. Locality: Crawfordsville, Indiana, US Age: Lower Mississippian Size: Specimen is 3.6 inches across.

#Fossil -  #Crinoid calyx, stem & holdfast.

The fossil that inspired Alien: 300million-year-old relic which designer used to create extra-terrestrials in sci-fi classic

Alien abduction: This fossil crinoid, which inspired the artist who designed the extra-terrestrial antagonist of the Alien films, was stolen and and later returned to a museum in Switzerland. I can see the resemblance.

Jurassic and Cretaceous club urchin fossils from Morocco.

Five different species of beautifully prepared Jurassic and Cretaceous club urchin fossils from Morocco. The spines on urchins quickly fall off after death so they are prepared.

Ditomopyge olsoni Trilobite Order Proetida, Superfamily Proetoidea, Family Proetidae Staunton Formation Middle Pennsylvanian Coal Run, Warren County,  Indiana  the collecting localities where these used to be found are no longer accessible. This is a sweet double specimen, each about .7 inches in length. The brown shell contrasts very well with the dark grey matrix.

Ditomopyge olsoni Trilobite Order Proetida, Superfamily Proetoidea, Family Proetidae Staunton Formation Middle Pennsylvanian Coal Run, Warren County, Indiana the collecting localities where these used to be found are no longer accessible. This is a sweet double specimen, each about .7 inches in length. The brown shell contrasts very well with the dark grey matrix.

Outstanding Asaphellus tataensis Trilobites.  This plate represents just about the finest example of a natural unadulterated Moroccan Ordovician Asaphid plate that I have procured.

This plate represents just about the finest example of a natural unadulterated Moroccan Ordovician Asaphid plate that I have procured.

Notoceras Cretaceous Heteromorph Ammonite from Madagascar Ammonites are excellent index fossils, and it is often possible to link the rock layer in which a particular species or genus is found to specific geologic time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled and nonspiraled forms (known as heteromorphs

Notoceras Cretaceous Heteromorph Ammonite from Madagascar Ammonites are excellent index fossils, and it is often possible to link the rock layer in which a particular species or genus is found to specific geologic time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled and nonspiraled forms (known as heteromorphs

:)

Hoplites Dentatus Ammonite France (Item French Ammonites for sale. FossilEra your source to quality fossil specimens.

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