Classification of Gerth 1922
G. †Heterocoenites Gerth 1922
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†Heterocoenites crassa Gerth 1922
†Heterocoenites variabilis Gerth 1922
G. †Pachypora Lindström 1873
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†Pachypora curvata Waagen and Wentzel 1886
†Pachypora jabiensis Waagen and Wentzel 1886
†Pachypora lobata Gerth 1922
†Pachypora monstrosa Gerth 1922
G. †Palaeacis Haime 1857
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†Palaeacis regularis Gerth 1922
†Palaeacis tubifer Gerth 1922
G. †Amplexus Sowerby 1814
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†Amplexus arundinaceus Lonsdale 1845
†Amplexus beyrichi Martin 1881
G. †Dibunophyllum Thomson and Nicholson 1876
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Subg. †Dibunophyllum (Verbeekiella) Penecke 1908
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†Dibunophyllum (Verbeekiella) australe Beyrich 1865
†Dibunophyllum rothpletzi Gerth 1922
G. †Lonsdaleia McCoy 1849
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†Lonsdaleia molengraaffi Gerth 1922
†Lonsdaleia timorica Gerth 1922
G. †Plerophyllum Hinde 1890
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†Plerophyllum beyrichi Rothpletz 1892
†Plerophyllum cyathophylloides Gerth 1922
†Plerophyllum radiciforme Gerth 1922
†Plerophyllum timorense Gerth 1922
†Plerophyllum weberi Gerth 1922
G. †Carcinophyllum Thomson and Nicholson 1876
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†Carcinophyllum wichmanni Rothpletz 1892