. Bulletin. Natural history; Natuurlijke historie. Fig. 57. Shell and burrow oi Gastrochaena (Rocellaria) linsleyi n. sp., holotype, YPM 10216a, Upper Cretaceous Ripley Formation, Coon Creek, Tennessee. Specimen removed from a shell of Cucullaea vulgaris Morton. A. From top to bottom of figure: lateral exterior view, lateral interior view, dorsal view perpen- dicular to the hinge axis, ventral view perpendicular to the plane of the pedal gape, ventral view perpendicular to the hinge axis (showing hinge structure). B-F. Diagram of a latex cast of the burrow' interior of the holotype, same magni
. Bulletin. Natural history; Natuurlijke historie. Fig. 57. Shell and burrow oi Gastrochaena (Rocellaria) linsleyi n. sp., holotype, YPM 10216a, Upper Cretaceous Ripley Formation, Coon Creek, Tennessee. Specimen removed from a shell of Cucullaea vulgaris Morton. A. From top to bottom of figure: lateral exterior view, lateral interior view, dorsal view perpen- dicular to the hinge axis, ventral view perpendicular to the plane of the pedal gape, ventral view perpendicular to the hinge axis (showing hinge structure). B-F. Diagram of a latex cast of the burrow' interior of the holotype, same magnification as A. The dotted lines in B, D, and E indicate the outer (exterior) surface of the Cucullaea vulgaris substratum. Legend: B View from the ventral shell margins C View from the outer (exterior) surface of the Cucullaea substratum D View from the anterior shell margins E View from the posterior shell margins F View from the inner (interior) surface of the Cucullaea substratum a Anterior of burrow shell chamber d Dorsal aspect of burrow shell chamber e Exhalant siphon i Inhalant siphon / Position of left shell valve p Posterior of burrow shell chamber r Position of right shell valve V Ventral aspect of burrow shell chamber 1. 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 Peabody Museum of Natural History. New Haven : The Museum
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