“Many people think there are no transitional species because the only fossil forms they’re aware of at all are a handful of plastic pieces in a prehistoric play set. They’ve no idea how rich the fossil record is! We know of several hundred species just within dinosaurs, to say nothing of the thousands of examples of each of hundreds more taxa apart from that. Experts estimate that all the collective genera still roaming around now only amount to about 1% of all the species that have ever lived. Practically everything there ever was ain’t no more. Every species living today has definite relatives both extant and extinct, and evident in the fossil record. And in one sense, all of them, even the things still alive, count as transitional species.”

The Varieties of Scientific Experience: A Personal View of the Search for God (2006)

Chpt.3, p. 37
Principles of Geology (1832), Vol. 1
Context: Respecting the extinction of species, Hooke was aware that the fossil ammonites, nautili, and many other shells and fossil skeletons found in England, were of different species from any then known; but he doubted whether the species had become extinct, observing that the knowledge of naturalists of all the marine species, especially those inhabiting the deep sea, was very deficient. In some parts of his writings, however, he leans to the opinion that species had been lost; and in speculating on this subject, he even suggests that there might be some connection between the disappearance of certain kinds of animals and plants, and the changes wrought by earthquakes in former ages. Some species, he observes with great sagacity, are peculiar to certain places, and not to be found elsewhere. If, then, such a place had been swallowed up, it is not improbable but that those animate beings may have been destroyed with it; and this may be true both of aerial and aquatic animals: for those animated bodies, whether vegetables or animals, which were naturally nourished or refreshed by the air, would be destroyed by the water, &c.; Turtles, he adds, and such large ammonites as are found in Portland, seem to have been the productions of the seas of hotter countries, and it is necessary to suppose that England once lay under the sea within the torrid zone! To explain this and similar phenomena, he indulges in a variety of speculations concerning changes in the position of the axis of the earth's rotation, a shifting of the earth's center of gravity, 'analogous to the revolutions of the magnetic pole,' &c.; None of these conjectures, however, are proposed dogmatically, but rather in the hope of promoting fresh inquiries and experiments.

"The Episodic Nature of Evolutionary Change", p. 182
The Panda's Thumb (1980)

You Can Lead an Atheist to Evidence, But You Can't Make Him Think (2009)

&quot;9th Foundational Falsehood of Creationism&quot; https://www.youtube.com/watch?v=Qfoje7jVJpU, Youtube (May 8, 2008) <br class="br">Youtube, Foundational Falsehoods of Creationism

Fundamenta fructificationis (1742). As quoted in John S. Wilkins (2009), "Species: A History of the Idea," University of California Press. p. 72

"Evolution as Fact and Theory", p. 260
Hen's Teeth and Horse's Toes (1983)

The Ghost in the Machine (1967).

Gregory S. Paul (1988) Predatory Dinosaurs of the World, Simon and Schuster, p. 176
Predatory Dinosaurs of the World