The term sphenoid fontanel is identified in base64 scheme by the sequence c3BoZW5vaWQgZm9udGFuZWw=, while the MD5 signature is equal to 45870081fab8beb22557ac3b2dcc6433. The ASCII encoding of sphenoid fontanel in hexadecimal notation is 737068656e6f696420666f6e74616e656c.