. Annual report. New York State Museum; Science; Science. 152 NEW YORK STATE MUSEUM PLATE 6 TIG. I. Trematonotus alpheus Hall (See plate 5, fig. 20-23) Page 54 Lateral view of a specimen, showing the revolving ribs and the broad transverse folds Lateral view of a specimen, showing distinctly the dorsal keel interrupted by the perforations, the alternation of the revolving ribs and the wide and deep umbilicus. From a gutta-percha impression of a natural mold A natural cast of the exterior of the apertural part of the last volution and of the interior of the penultimate volution, showing the dor
. Annual report. New York State Museum; Science; Science. 152 NEW YORK STATE MUSEUM PLATE 6 TIG. I. Trematonotus alpheus Hall (See plate 5, fig. 20-23) Page 54 Lateral view of a specimen, showing the revolving ribs and the broad transverse folds Lateral view of a specimen, showing distinctly the dorsal keel interrupted by the perforations, the alternation of the revolving ribs and the wide and deep umbilicus. From a gutta-percha impression of a natural mold A natural cast of the exterior of the apertural part of the last volution and of the interior of the penultimate volution, showing the dorsal perforations of the last volution and the smooth internal surface of the earlier volutions An exterior dorsal view of a shell, showing distinctly the inter- ruptions of the revolving ribs by concentric growth and the widening of the ribs upon the lip. From a gutta-percha squeeze of a natural impression. 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 New York State Museum. Albany : University of the State of New York
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1902
