. Australasian fossils, a students' manual of palaeontology. Paleontology. BIVALVES. Fig. 91-PALAEOZOIC BIVALVES. 179. A—Mytilarca acutirostris, Chapm. Silurian. Victoria B—Modiolopsis melbournensis, Chapm. Silurian. Victoria C—Goniophora australis, Chapm. Silurian. Victoria D—Paracyclas siluricus, Chapm. Silurian. Victoria K—Actinopteria australis, Dun. Devonian. New South Wales F—Iyvriopeeten gracilis, Dun. Devonian. New South Wales contain several as yet undescribed species belonging to the genera Sphenohis, Actinodesma and Para- cyclas. The genera Paracyclas, Aviculopecten and Pterinea hav
. Australasian fossils, a students' manual of palaeontology. Paleontology. BIVALVES. Fig. 91-PALAEOZOIC BIVALVES. 179. A—Mytilarca acutirostris, Chapm. Silurian. Victoria B—Modiolopsis melbournensis, Chapm. Silurian. Victoria C—Goniophora australis, Chapm. Silurian. Victoria D—Paracyclas siluricus, Chapm. Silurian. Victoria K—Actinopteria australis, Dun. Devonian. New South Wales F—Iyvriopeeten gracilis, Dun. Devonian. New South Wales contain several as yet undescribed species belonging to the genera Sphenohis, Actinodesma and Para- cyclas. The genera Paracyclas, Aviculopecten and Pterinea have been recorded from New South Wales, chiefly from the Yass district. The derived boulders found in the Upper Cretaceous beds forming the opal-fields at White Cliffs, New South Wales, have been deter- mined as of Devonian age. They contain, amongst other genera, examples of Actinopteria (A. australis), Lyriopecten (L. gracilis) (Fig. 91F), and Lepto- desma (L. inflation and L. obesum). Carbopermian Bivalves.— One of the most prolific palaeozoic series for bivalved mollusca is the Carbopermian. To select. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chapman, Frank M. (Frank Michler), 1864-1945. Melbourne, London [etc. ] G. Robertson & Company Propy. ltd.
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Keywords: ., bookaut, bookcentury1900, bookdecade1910, booksubjectpaleontology
