Jeffrey H. Schwartz - Time Quotes

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Becoming a rock does not ensure safety.... The blasting of windblown sands, the pummeling of waves, the corrosive secretions of mosses and lichens, and even the steady rhythm of a stream can, in time, reduce a seemingly indestructible boulder to a grain of sand.

Jeffrey H. Schwartz
The processes of bone preservation are such that the farther back in time we go, the less there is.

Jeffrey H. Schwartz
The corpses of water-dwelling animals often sink to the bottom and become covered with sediment. The sediment tends to protect the dead body and even at times retain an impression of its shape and external anatomical details. This environment then provides the means by which the bones of the skeleton are mineralized.... most land animals die and fall to the ground, without any chance of a freak flood casting them into an environment more favorable to fossilization.

Jeffrey H. Schwartz
If Walter Garstang's suggestion is correct, and chordates did arise from a tunicate-like form by retaining the chordate features of their larval stage of development into adulthood, then the first chordates must have been affected by a regulatory mutation that kept the Manx gene activated for a longer period of time.

Jeffrey H. Schwartz
Science, especially evolutionary sciences, can only proceed from learning about theories of hypotheses that do not stand the test of time.

Jeffrey H. Schwartz