''Rhabdinopora'' is a genus of
graptolite
Graptolites are a group of colonial animals, members of the subclass Graptolithina within the class Pterobranchia. These filter-feeding
Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and ...
s belonging to the family
Anisograptidae. It is the earliest
planktic
Plankton are the diverse collection of organisms found in water (or air) that are unable to propel themselves against a current (or wind). The individual organisms constituting plankton are called plankters. In the ocean, they provide a cruc ...
graptolite and is presumably the ancestor of all later planktic graptoloids.
Some species identified as the first planktid graptolite are:
*''
Rhabdinopora proparabola''
*''
Rhabdinopora praeparabola''
*''
Rhabdinopora parabola''
*''
Rhabdinopora flabelliformis''
References
Graptolite genera
Ordovician animals of Asia
Paleozoic life of Newfoundland and Labrador
{{Paleo-deuterostome-stub