Was Crocodile stronger at Marineford? Or was he holding back in Alabasta?

 During the Alabasta arc, Crocodile displayed a level of power that was initially considered overwhelming by the Straw Hat Pirates. He possessed the Logia-type Devil Fruit called the Suna Suna no Mi (Sand-Sand Fruit), which granted him the ability to control and transform into sand. He had a reputation as a Shichibukai and controlled the desert kingdom of Alabasta from the shadows. His strength was showcased through his battles with Luffy and others. At Marineford, Crocodile was present as part of the war that took place at Marine Headquarters. While he did participate in the battle, he didn't display the same level of dominance as some other powerful characters present. This has led fans to speculate that he might not have been as strong as initially portrayed in Alabasta. It's important to note that power scaling and character abilities can be subject to interpretation and development by the author. Oda often keeps details deliberately open-ended to keep the story intriguing.

Evolution of ancient animals

The evolution of ancient animals refers to the changes in species over time through processes such as natural selection and genetic variation. Ancient animals have evolved to adapt to their environments, developing unique physical and behavioral traits that help them to survive and reproduce. Some examples of ancient animals that have undergone significant evolutionary changes include:

Dinosaurs: Dinosaurs were a group of reptiles that evolved millions of years ago and dominated the Earth during the Mesozoic Era. Over time, some dinosaurs evolved into birds, which are their closest living relatives.

Whales: Whales are descendants of land-dwelling mammals that evolved to live in the ocean. Over time, they developed unique adaptations such as flippers, a streamlined body shape, and the ability to hold their breath for extended periods of time.

Humans: Humans are descendants of early primates and have evolved over millions of years to become one of the most advanced species on the planet. Over time, humans have developed unique traits such as the ability to walk upright, the ability to use tools, and complex language and cultural practices.

The evolution of ancient animals is a slow process that occurs over generations, and is driven by a variety of factors including changes in the environment, genetic variation, and natural selection. Understanding the evolution of ancient animals can provide valuable insights into the history of life on Earth and the resilience of species in the face of changing environments.