Several years ago, I read part of Georges Cuvier's
Sur la Theorie de la Terre (as I recall the title from memory). Cuvier (1769-1832) established the technique of reconstructing the entire animal by extrapolating from a few parts (eg, teeth indicating diet, size of individual bones indicating overall size). He was also a staunch anti-evolutionist (obviously Lamarckian instead of Darwinian). The reason he gave in his treatise was that examination of mummies brought by Napoleon from Egypt showed that those animals and humans from thousands of years ago were no different than modern animals and humans, which he believed was shortly after the creation of their lineages.
IOW, this prestigious creationist and "Father of Paleontology" had examined the evidence and nixed modern creationists' attempts to invoke bizarrely hyper-rapid speciation, AKA macro-evolution.