Superb Phyllograptus Graptolites Mass Mortality from Fillmore Formation

Description: An interesting multi-specimen graptolite plate with six specimens. A few are over-lapping. Be sure to take note of the large pygidiums of what appear to be Isoteloides flexus.

Graptolites are colonial animals belonging to the hemichordates. The term originates from the patronymic genus Graptolithus. The graptolites have a cosmopolitan distribution, and so serve as index fossils in many locations. The Graptoloidea were pelagic, drifting with the currents, and were the most important members of the plankton before dying out in the early Devonian. This genus draws its name from its leaf-like shape.

Shipping information: International buyers, please be aware this is a large and heavy plate. The plate weighs over 5 ½ pounds.