Machichnus is an ichnogenus. It was erected by Mikuláš et al. (2006) for shallow, thin, discrete, parallel to subparallel, smooth-bottomed scratches, occurring on bone tissue in small groups or series. According to modern analogues, the series of scratches represent marks of teeth of carnivorous or scavenging reptilians and mammals. Such traces are quite frequent in the fossil record since the mid-Mesozoic, but they have seldom been described in detail.
| Machichnus | |
|---|---|
Trace fossil classification 
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| Ichnofamily: | †Machichnidae |
| Ichnogenus: | †Machichnus Mikuláš et al., 2006 |
| Type ichnospecies | |
| Machichnus regularis Mikuláš et al., 2006
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| Ichnospecies[1] | |
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The type species/specimen of Machichnus comes from the Miocene of the Czech Republic. In this case, crocodiles are suspect as tracemakers.[2]
Machichnus originally contained three ichnospecies: Machichnus regularis, Machichnus multilineatus, and Machichnus bohemicus. The ichnogenera Brutalichnus and Nihilichnus were described in the same paper.[2]
See also
editReferences
edit- ^ Wisshak, M.; Knaust, D.; Bertling, M. (2019). "Bioerosion ichnotaxa: review and annotated list". Facies. 65 (2): 24. doi:10.1007/s10347-019-0561-8.
- ^ a b Mikuláš R., Kadlecová E., Fejfar O., Dvořák Z. (2007): Three New Ichnogenera of Biting and Gnawing Traces on Reptilian and Mammalian Bones: A Case Study from the Miocene of the Czech Republic. Ichnos, 13, p. 113–127.
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