Annual report . REPORT OF THE DIRECTOR I913 39 The Cryptozoon ledge in the town of Greenfield, Saratogacounty. The geologists of the Survey have long been aware of theoccurrence on the property now owned by Mrs Mabel A. Wesley,but generally known as the Hoyt quarry, of a remarkable ledgeof Cambric rocks exposing in most extraordinary fashion a reef ofthe fossil known as Cryptozoon, which is believed to be an algoidplant secreting a calcareous skeleton. This exposure is to be seenalong the roadside from Saratoga Springs to Greenfield and thefact that the ledge has been smoothed down by glacial


Annual report . REPORT OF THE DIRECTOR I913 39 The Cryptozoon ledge in the town of Greenfield, Saratogacounty. The geologists of the Survey have long been aware of theoccurrence on the property now owned by Mrs Mabel A. Wesley,but generally known as the Hoyt quarry, of a remarkable ledgeof Cambric rocks exposing in most extraordinary fashion a reef ofthe fossil known as Cryptozoon, which is believed to be an algoidplant secreting a calcareous skeleton. This exposure is to be seenalong the roadside from Saratoga Springs to Greenfield and thefact that the ledge has been smoothed down by glacial action rendersit all the more conspicuous and interesting. These great circularCryptozoon masses are often many feet in circumference, made upof concentric layers of algoid growths, and it is quite probable(indeed, it is so stated freely by geologists who have studied theseancient organisms in various parts of the world) that this exhibit isaltogether unique. Especial interest attaches to these organismsfrom the


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1902