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TF1003 - Didymograptus
Specimen Age
Ordovician
Location
Llandeilo, Abereiddy Bay, Wales
Stratigraphic Range
Ordovician
Taxonomy
Phylum: Hemichordata
Class: Graptolithina
Genus: Didymograptus
Class: Graptolithina
Genus: Didymograptus
Distinctive Features
Stipes (2)
Thecae
Rhabdosome
Nema
'sawtooth'
Thecae
Rhabdosome
Nema
'sawtooth'
Preservation
Flattened
Carbon film
Pale colourisation from chlorine inclusion into the fossil
Carbon film
Pale colourisation from chlorine inclusion into the fossil
Advanced notes
The 'sawtooth' faces are facing each other. This is therefore a relatively old two stiped graptolite from the Ordovician. One specimen shows two graptolites with nemas overlapping. At first glance this could be mistaken for a four stiped graptolite, such as Tetrapgraptus, but close examination reveals that there are two animals, squashed on top of each other.