Cambrian Graptolite from Christmas Hills
Hemichordata, Graptolithina, Dendroidea
Time: Late Middle Cambrian
Size: 5 mm
Christmas Hills, Tasmania, Australia
fossil is a Cambrian dendroid graptolite known as Sphenoecium discoidalis.
Graptolites are colonial animals belonging to the hemichordates.
The term originates from the patronymic genus Graptolithus. 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 unusual example is seen here as a part/counterpart
fossil pictures to enlarge