feature layer - ESRI JavaScript FeatureLayer constructor makes graphic geometry null in featurecollection object

I'm pulling point data by lat long from my SQLServer database via webservice and creating a JSON FeatureCollection object as the webservic response. When I attempt to create a FeatureLayer from this FeatureCollection, the geometry attribute of the features becomes null, while the attribute array of each feature and the layerdefinition comes through fine. Here's a sample of my code and JSON: JSON:

    {
"layerDefinition": {
    "geometryType": "esriGeometryPoint",
    "objectIdField": "ObjectID",
    "drawingInfo": {

        "renderer": {
            "type": "simple",
            "label": "",
            "description": "",
            "symbol": {
                "color": [
                    205,
                    212,
                    144
                ],

                "size": 50,
                "angle": 0,
                "xoffset": 0,
                "yoffset": 0,
                "type": "esriSMS",
                "style": "esriSLSSolid",
                "outline": {
                    "color": [
                        205,
                        212,

                        144
                    ],
                    "width": 0,
                    "type": "esriSLS",
                    "style": "esriSLSolid"
                }
            }
        }
    },
    "fields": [

        {
            "name": "ObjectID",
            "alias": "ObjectID",
            "type": "esriFieldTypeOID"
        }, ...some more fields...
     ]
     },
    "featureSet": {
    "features": [
        {

            "attributes": {
                "ObjectID": 1,...more attributes...
    },
            "geometry": {
                "type": "point",
                "x": -8242964.882933755,
                "y": 5071902.135513675,
                "spatialReference": {
                    "wkid": 102100
                }

            }
        },

Code:

    function onGetFeatureJsonReturn(msg) {

      var featureCollection = JSON.parse(msg.d);
      var featureLayer = new esri.layers.FeatureLayer(featureCollection, {
         id: 'HourlyDataLayer'
       });

       map.addLayers([featureLayer]);
    }