where the original maker of a trace fossil can be identified with confidence, phylogenetic classification of trace fossils is an unreasonable proposition...

free dictionary. A trace fossil, also known as an ichnofossil ( /ˈɪknoʊfɒsɪl/; from Greek: ἴχνος ikhnos "trace, track"), is a fossil record of biological...

chaotic nature of trace fossil classification, several ichnogenera hold names normally affiliated with animal body fossils or plant fossils. For example,...

an animal. As such, it is regarded as the earliest widespread complex trace fossil. Its earliest appearance, around 542 million years ago (mya), which was...

Chondrites is a trace fossil ichnogenus, preserved as small branching burrows of the same diameter that superficially resemble the roots of a plant. The...

Thalassinoides is an ichnogenus of trace fossil (fossil records of lifeforms' movement, rather than of the lifeforms themselves) used to refer to "dichotomously...

Paleodictyon is a trace fossil, usually interpreted to be a burrow, which appears in the geologic marine record beginning in the Precambrian/Early Cambrian...

Skolithos (formerly spelled Scolithus or Skolithus) is a common trace fossil ichnogenus that is, or was originally, an approximately vertical cylindrical...

ichnogenus of trace fossil which resembles the marks produced by the action of a mollusc's radula on sediment. As an ichnogenus, its classification is based...

interpreted in many different ways in the past, but is now thought to be a trace fossil of a slug-like organism that moved by crawling to on-shore surfaces,...

of trace fossil (fossil records of lifeforms' movement, rather than of the lifeforms themselves) allied to Cruziana. Rusophycus is the resting trace, recording...

Entobia is a trace fossil in a hard substrate (typically a shell, rock or hardground made of calcium carbonate) formed by sponges as a branching network...

Isopodichnus is an ichnogenus of trace fossil. Ribbon-like in form, Isopodichnus traces were likely formed by the activity of an isopod crustacean foraging...

Tyrannosauripodidae Tyrannosauripus pillmorei Trace fossil classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Clade: Dinosauria Clade:...

Atreipus is an ichnogenus or trace fossil attributed to early Ornithischian dinosaurs. Its significance for Triassic biostratigraphy has earned it some...

may simply be deposit feeding traces. Zoophycos gives its name to the Zoophycos ichnofacies, an assemblage of trace fossils which is associated with the...

fossils (also known as guide fossils or indicator fossils) are fossils used to define and identify geologic periods (or faunal stages). Index fossils...

A fossil (from Classical Latin fossilis, lit. 'obtained by digging') is any preserved remains, impression, or trace of any once-living thing from a past...

Platysauropus Trace fossil classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Clade: Dinosauria Clade: Saurischia Clade: Theropoda Ichnogenus:...

Magnoavipes Specimen from Dinosaur Ridge, Colorado Trace fossil classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Clade: Dinosauria...

Berriasian stage of the Cretaceous, making them among the oldest bird trace fossils in the world. Lockley, M.G.; Janke, P.; Theisen, L. (2001-01-01). "Bird...

Similar fossil footprints have been discovered in the Dunvegan Formation of British Columbia. These were among the first known Cretaceous fossil bird tracks...

trackway (holotype is 45MR and 58PR, paratype is 7PR and 29PR) Trace fossil classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Order: †Pterosauria...

Gnathichnus is a trace fossil on a hard substrate (typically a shell, rock or hardground made of calcium carbonate) formed by regular echinoids as they...

several fossil trackways that indicate that it was likely a cursorial animal that was well-adapted to desert environments. The Farlowichnus fossil material...

Taupezia Trace fossil classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Clade: Dinosauria Clade: Saurischia Clade: Theropoda Ichnogenus:...

Ornithotarnocia Trace fossil classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Aves Ichnofamily: †Avipedidae Ichnogenus: †Ornithotarnocia...

Plesiothornipos Trace fossil classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Clade: Dinosauria (?) Ichnogenus: †Plesiothornipos...

The hypothesis supported by Seilacher, that the burrows we find are trace fossils of a worm-like animal, is supported by several features of the burrows...

Gyrotrisauropus Trace fossil classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Clade: Dinosauria Clade: †Ornithischia Ichnogenus: †Gyrotrisauropus...