Excerpt from Contributions to British Palæontology
Gen. Char. Tooth simply conical, gradually tapering, Slightly curved backwards, apex pointed, section circular throughout; medullary cavity large, conical, simple, so wide at base that the tooth is reduced to a thin edge; surface even, very finely striated longitudinally. Microsc0pic structure — exceedingly fine calci gerous tubes radiating directly from the pulp-cavity towards the periphery, near which they terminate in numerous very minute calcigerous cells, beyond which is a narrow clear layer bounded by a definite dark line, outside of which is a coating of glass like enamel, without perceptible organic structure under a power of 300 diameters.
Excerpt from Contributions to British Palæontology
Gen. Char. Tooth simply conical, gradually tapering, Slightly curved backwards, apex pointed, section circular throughout; medullary cavity large, conical, simple, so wide at base that the tooth is reduced to a thin edge; surface even, very finely striated longitudinally. Microsc0pic structure — exceedingly fine calci gerous tubes radiating directly from the pulp-cavity towards the periphery, near which they terminate in numerous very minute calcigerous cells, beyond which is a narrow clear layer bounded by a definite dark line, outside of which is a coating of glass like enamel, without perceptible organic structure under a power of 300 diameters.