. Australasian fossils, a students' manual of palaeontology. Paleontology. 140 AUSTRALASIAN FOSSILS. owing to the presence of which they are often pre- served as fossils. Silurian Starfishes.— The oldest Australian fossil Starfishes are found in the Silurian. In Victoria they occur in some abund- ance in the lower, Melbournian, series, but appear to be absent or at all events very scarce in the upper, or Yeringian series. The commonest genus is Pal- aeaster, of which there are two species, P. smythi (Fig. 77 A) and P. meridionalis, found alike in the sandy and argillaceous strata near Melbourn
. Australasian fossils, a students' manual of palaeontology. Paleontology. 140 AUSTRALASIAN FOSSILS. owing to the presence of which they are often pre- served as fossils. Silurian Starfishes.— The oldest Australian fossil Starfishes are found in the Silurian. In Victoria they occur in some abund- ance in the lower, Melbournian, series, but appear to be absent or at all events very scarce in the upper, or Yeringian series. The commonest genus is Pal- aeaster, of which there are two species, P. smythi (Fig. 77 A) and P. meridionalis, found alike in the sandy and argillaceous strata near Melbourne. Urasterella is another genus found in the Silurian rocks near Melbourne, in which the marginal serie3 of plates seen in Palaeaster are wanting, giving to the starfish a slender, long-armed aspect (Fig. 77 B). Pig. 77—rOSSIL A.—Pa^easter smythi. McCoy sp Silurian. Flemington, Victoria. B—Urasterella selwyni. McCoy. Silurian. Kilmore, Victoria. C—Palaeaster gieranteus, Kth. fil. Carbopermian. Near Farley, Ntw South Wales D—Pentagonaster sp. Tertiary (Janjukian). Bore in Mallee. Victoria. 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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