Didontogaster cordylina (specimen 01-AB)

Specimen Name: Didontogaster cordylina
Common Name: Polychaete worm
Specimen Code: 17POLY00001-AB
Acquisition Method: Purchased (date unknown)

Locale: Grundy County, Illinois, USA
Formation: Francis Creek Shale, Carbondale Formation
Geologic Time Period: Middle Pennsylvanian Sub-Period

Taxonomy:
Eukarya – Animalia – Annelida – Polychaeta – Polychaeta incertae sedis – Polychaeta fossils incertae sedis – Didontogaster – Cordylina

Description of Specimen:
Two halves of a split nodules – both with dark brown centres and light brown edges. In the centre of each side of the nodule is the pale outline of a worm in white with a darker brown ‘halo’

Measurements of Specimen:

• Specimen 01-A: 50mm x 5mm x 0mm
• Nodule A: 70mm x 47mm x 18mm
• Specimen 01-B: 50mm x 5mm x 0mm
• Nodule B: 70mm x 47mm x 13mm