TF1001 - Dendroid graptolites

Stratigraphic Range

Cambrian to Carboniferous

Taxonomy

Phylum: Hemichordata
Class: Graptolithina
Order: Dendroidea

Distinctive Features

Numerous branching stipes
Colonial
Thecae

Preservation

Flattened

Advanced notes

In this specimen we cannot see the size of a potential holdfast. Because of this we cannot say if this is a planktonic or benthic animal.

Dendroid graptolites began as benthic organisms attaching to the seafloor with a holdfast, but some diversified as planktonic animals, with a reduced holdfast.
TF1001 - Dendroid graptolites