Concerning the Erection of Ichnogenera and Ichnospecies in Vertebrate Ichnotaxonomy

Demathieu, Georges; Demathieu, Pierre

doi:10.1080/10420940290208153

Cited by 13 publications

(6 citation statements)

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“…It is not necessary to have all possible data at hand but usually half of the theoretically measurable criteria are needed. According to information theory, three is always the minimum number (Demathieu & Demathieu 2002). Ichnogenera, however, are better described using qualitative aspects.…”

Section: Ichnotaxobasesmentioning

confidence: 99%

Names for trace fossils: a uniform approach

Bertling¹,

Braddy²,

Bromley³

et al. 2006

LET

450

296

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The taxonomic treatment of trace fossils needs a uniform approach, independent of the ethologic groups concerned. To this aim, trace fossils are rigorously defined with regard to biological taxa and physical sedimentary structures. Potential ichnotaxobases are evaluated, with morphology resulting as the most important criterion. For trace fossils related to bioerosion and herbivory, substrate plays a key role, as well as composition for coprolites. Size, producer, age, facies and preservation are rejected as ichnotaxobases. Separate names for undertracks and other poorly preserved material should gradually be replaced by ichnotaxa based on well‐preserved specimens. Recent traces may be identified using established trace fossil taxa but new names can only be based on fossil material, even if the distinction between recent and fossil may frequently remain arbitrary. It is stressed that ichnotaxa must not be incorporated into biological taxa in systematics. Composite trace fossil structures (complex structures made by the combined activity of two or more species) have no ichnotaxonomic standing but compound traces (complex structures made by one individual tracemaker) may be named separately under certain provisions. The following emendations are proposed to the International Code of Zoological Nomenclature: The term ‘work of an animal’ should be deleted from the code, and ichnotaxa should be based solely on trace fossils as defined herein.

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Section: Ichnotaxobasesmentioning

confidence: 99%

Names for trace fossils: a uniform approach

Bertling¹,

Braddy²,

Bromley³

et al. 2006

LET

450

296

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show abstract

“…The Linnaean classification of fossil vertebrate tracks (footprints) is an agreed, but often uncertain practice (Demathieu & Demathieu, 2003). Given the peculiar nature of tracks as the result of the combined interaction of foot morphology, substrate properties, locomotion and behaviour, unlike conventional palaeontology finding a 'morphologically-perfect' specimen is PeerJ reviewing PDF | (2017:06:18800:2:0:NEW 14 Dec 2017)…”

Section: Discussionmentioning

confidence: 99%

Peer Review #1 of "Stat-tracks and mediotypes: powerful tools for modern ichnology based on 3D models (v0.2)"

Romilio¹

2018

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Vertebrate tracks are subject to a wide distribution of morphological types. A single trackmaker may be associated with a range of tracks reflecting individual pedal anatomy and behavioural kinematics mediated through substrate properties which may vary both in space and time. Accordingly, the same trackmaker can leave substantially different morphotypes something which must be considered in creating ichnotaxa. In modern practice this is often captured by the collection of a series of 3D track models. We introduce two concepts to help integrate these 3D models into ichnological analysis procedures. The mediotype is based on the idea of using statistically-generated threedimensional track models (median or mean) of the type specimens to create a composite track to support formal recognition of a ichno type. A representative track (mean and/or median) is created from a set of individual reference tracks or from multiple examples from one or more trackways. In contrast, stat-tracks refer to other digitally generated tracks which may explore variance. For example, they are useful in: understanding the preservation variability of a given track sample; identifying characteristics or unusual track features; or simply as a quantitative comparison tool. Both concepts assist in making ichnotaxonomical interpretations and we argue that they should become part of the standard procedure when instituting new ichnotaxa. As three-dimensional models start to become a standard in publications on vertebrate ichnology, the mediotype and stat-track concepts have the potential to help guiding a revolution in the study of vertebrate ichnology and ichnotaxonomy.

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“…The latter could not be found at all at the new layer -in spite of some hundred single theropod tracks. A reconsideration of that ichnogenus should follow new dicussions and recommenddations (Demathieu & Demathieu 2003). The photogrammetrical analysis of the theropod 'community' will have to follow some new insights from Breithaupt & Matthews (2012;► p. 17, this volume).…”

Section: Description Of Excursion Stopsmentioning

confidence: 99%

Dinosaur tracks 2011

Richter¹,

Reich²

2012

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Concerning the Erection of Ichnogenera and Ichnospecies in Vertebrate Ichnotaxonomy

Cited by 13 publications

References 0 publications

Names for trace fossils: a uniform approach

Names for trace fossils: a uniform approach

Peer Review #1 of "Stat-tracks and mediotypes: powerful tools for modern ichnology based on 3D models (v0.2)"

Dinosaur tracks 2011

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