art. 9
new cambrian crustacea—resser
17
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| Fig. | 3. | A third somewhat larger right valve with the cast of the exterior of the left shown in the upper front corner. Note the large spines along the dorsal line. Paratype, Cat. No. 80485, U.S.N.M.
Lower Cambrian, Eager formation; (loc. 67g) near Cranbrook, British Columbia.
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| Tuzoia nodosa, new species | 10 | ||
| 4 | (✕ 2). Small right valve. Note the very large dorsal spines and those on the keel. Holotype, Cat. No. 80486, U.S.N.M.
Lower Cambrian, Eager formation; (Loc. 67g) near Cranbrook, British Columbia.
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| Anomalocaris pennsylvanica, new species | 12 | ||
| 5 | (✕ 2). Side view of animal. Specimen poorly differentiated from rock hence the poor illustration. Holotype, Cat. No. 80487, U.S.N.M.
Lower Cambrian, Kinzers formation; (loc. 12x) near Rohrerstown, Pennsylvania.
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| Protocaris marshi Walcott | 12 | ||
| Fig. | 1. | Unretouched photograph of the single specimen. | |
| 2. | Retouched photo of same, to bring out certain features that may be seen only by turning the specimen at various angles to the light. Holotype, Cat. No. 15400, U.S.N.M.
Lower Cambrian; (Loc. 25) Georgia, Vermont.
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| Tuzoia praemorsa, new species | 10 | ||
| 3. | Valves flattened into one plane. Distal portions beyond keel folded underneath. Note how the broad keel spines unite to form a wide frill. Surface covered with fine pseudomorphic needle crystals. Holotype, Cat. No. 80488, U.S.N.M.
Middle Cambrian, Burgess shale; (loc. 35k) near Field, British Columbia.
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| Tuzoia spinosa, new species | 10 | ||
| 4. | Fragments of two valves. Keel spines on right-hand specimen preserved in unremoved matrix, overhanging outer portion of shell. Rock bright red and hence difficult to photograph. Holotype, Cat. No. 80489, U.S.N.M.
Lower Cambrian, Eager formation; (loc. 67g) near Cranbrook, British Columbia.
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| Tuzoia? dunbari, new species | 11 | ||
| Fig. | 1. | Impression of exterior of valve. Note the extraordinary spines. Reticulations faint and difficult to photograph because outlined in bright yellow. Holotype, Peabody Museum, Yale University, No. 10046.
Lower Cambrian, Kinzers formation; (loc. 12x) near Rohrerstown. Pa.
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62996—29——2
