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The ichnogenus Thalassinoides: burrow fossil produced by crustaceans from the Middle Jurassic, HaMakhtesh HaKatan, southern Israel. An ichnotaxon (plural ichnotaxa) is "a taxon based on the fossilized work of an organism", i.e. the non-human equivalent of an artifact.
Otozoum ("giant animal") is an extinct ichnogenus (fossilized footprints and other markings) of sauropodomorph dinosaur from the Late Triassic-Middle Jurassic sandstones. Footprints were made by heavy, bipedal or, sometimes, quadrupedal animals with a short stride that walked on four toes directed forward. [ 1 ]
Footprints of both the holotype and paratype trackway of Dromaeosauriformipes are similar in size, roughly 1.0 cm (0.39 in) long and 0.4 cm (0.16 in) wide in average. The average step length between each of the seven consecutive tracks of the holotype is 4.62 cm (1.82 in), while the two long steps of the paratype are measured up to 25.16 and 31 ...
It has been suggested that one form of Protichnites, P. eremita Form 1, may have been produced by an ambulating pair of individuals, as in amplexus. In this form, the medial furrow is discontinuous and each section is set at an angle, such that the series of medial imprints have a shingled appearance, as might result if the female were ...
The dinosaur trackmaker of the Farlowichnus footprints may have reached lengths of up to 3–3.5 metres (9.8–11.5 ft), as indicated by the larger size of one of the paratype specimens. The holotype trackmaker was smaller, at about 1.5 metres (4.9 ft) long, weighing around 12–15 kilograms (26–33 lb).
Ornithichnites is an ichnotaxon of mammal footprint that was originally classified as a dinosaur. [1] The name was originally used by Edward Hitchcock in 1836 as a higher group name rather than a specific ichnogenus, [1] and thus the name does not have priority over specific ichnogeneric names even if they were first identified as Ornithichnites.
There have been disagreements about whether the North American D. agilis represents a separate ichnospecies. [5] More recently, based on the fact that there is no satisfactory anatomical diagnosis distinguishing various ichnospecies of Dromopus, only the type ichnospecies D. lacertoides has been agreed to be valid. [1] [6]
The lack of claws and scales suggest that these footprints were made by large amphibians, being often attributed to eryopid temnospondyls. [ 1 ] [ 2 ] [ 3 ] The lack of belly and tail marks in the sediment indicates that the producer raised most of its body when walking and had a short or non-dragging tail.
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