Buch 
The organization of Trilobites, deduced from their living affinities : with a systematic review of the species hitherto described / by Hermann Burmeister ; ed. from the German by Professor Bell and Professor E. Forbes
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SUPPLEMENTARY APPENDIX.

Phacops Glockeri

intercostatus

spinifer

Reussii

Bronnii

socialis

Hawlei

elongatus

dubius

Phillipsii

intermedius

breviceps

Phacops laevigatusSao hirsuta

Staurocepijalus Murchisoni

Trinucleus GoldfussiiBucklandiiTrilobites heteroclytusorbitatusdesideratusdecipiensLindaueri.