. Athlon : essays on palaeontology in honour of Loris Shano Russell. Paleontology. D. L. DINELEY 37 at a height of 8-10 mm above the deepest part of the body as in many, though not all, other cyathaspidids. Ctenaspis ornata sp. nov. Figs. 6, 7 Holotype nmc 21856. Dorsal shield, incomplete. The species is so named because of the ornate surface markings of the shields and the presence of an ornamented dorsal spine. Occurrence Early Devonian (Gedinnian-?Siegenian). Sandstone facies of the Peel Sound Formation. Northeastern part of Prince of Wales Island, Found in loose scree on lower slope
. Athlon : essays on palaeontology in honour of Loris Shano Russell. Paleontology. D. L. DINELEY 37 at a height of 8-10 mm above the deepest part of the body as in many, though not all, other cyathaspidids. Ctenaspis ornata sp. nov. Figs. 6, 7 Holotype nmc 21856. Dorsal shield, incomplete. The species is so named because of the ornate surface markings of the shields and the presence of an ornamented dorsal spine. Occurrence Early Devonian (Gedinnian-?Siegenian). Sandstone facies of the Peel Sound Formation. Northeastern part of Prince of Wales Island, Found in loose scree on lower slope of Mt. Matthias. Referred Material nmc 21857-21859, present with the type on a single loose slab (Fig. 7d). Diagnosis A Ctenaspis with dorsal shield to 5 cm long and with a width ratio of about , lateral brims serrate in the mid-third or anterior part, posterior margin smooth or with large tubercles, and a prominent short median spine. Ornamentation of large and small tubercles, transverse in rostral area. Ventral shield strongly arched, widest at posterior, margins 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 Churcher, C. S. , 1928-; Russell, Loris Shano, 1904-; Royal Ontario Museum. Toronto : ROM
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Keywords: ., bookc, bookcentury1900, bookleafnumber47, booksubjectpaleontology
