On the occurrence of Parabrograptus and Sinograptus from the Middle Ordovician of western Canada

D. E. Jackson

1966

Article

Geological Magazine 103(30022):263-268

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Taxa discussed in this work:

• Abrograptidae
• Parabrograptus
• Parabrograptus tribrachiatus
• Sinograptidae
• Sinograptus aequalis

Taxonomy:

• Parabrograptus tribrachiatus belongs to Parabrograptus - Mu and Qiao (1962)
• Parabrograptus belongs to Abrograptidae - Jackson (1966)
• Abrograptidae belongs to Graptoloidea - Jackson (1966)
• Sinograptidae belongs to Graptoloidea - Jackson (1966)
• Sinograptus aequalis belongs to Sinograptus - Jackson (1966)
• Sinograptus belongs to Sinograptidae - Jackson (1966)