An ichnite is a fossilised footprint. This is a type of trace fossil. Over the years, many ichnites have been found, around the world, giving important clues about the behaviour of the animals that made them. For instance, multiple ichnites of a single species, close together, suggest 'herd' or 'pack' behaviour of that species. Combinations of footprints of different species provide clues about the interactions of those species. Even a set of footprints of a single animal gives important clues, as to whether it was bipedal or quadrupedal. In this way, it has been suggested that some pterosaurs, when on the ground, used their forelimbs in an unexpected quadrupedal action. Special conditions are required, in order to preserve a footprint made in soft ground. A possible scenario is a sea or lake shore that became dried out to a firm mud in hot, dry conditions, received the footprints and then became silted over in a flash storm. The first ichnite found was in 1800 in Massachusetts, USA, by a farmer named Pliny Moody, who found 1-foot long fossilized footprints. They were thought by Harvard and Yale scholars to be from "Noah's Raven." A famous group of ichnites was found in a limestone quarry at Ardley, 20 km Northeast of Oxford, England, in 1997. They were thought to have been made by Megalosaurus and possibly Cetiosaurus. There are replicas of some of these footprints, set across the lawn of Oxford University Museum of Natural History. A creature named Cheirotherium was, for a long time and still may be, only known from its fossilised trail. Its footprints were first found in 1834, in Thuringia, Germany, dating from the Late Triassic Period. The largest known dinosaur footprints, belonging to sauropods and dating from the early Cretaceous were found to the north of Broome on the Dampier Peninsula, Western Australia, with some footprints measuring 1.7 m. The 3D digital documentation of tracks has the benefit of being able to examine ichnite in detail remotely and distribute the data to colleagues and other interested personnel.
