A Proposed Terminology of Convergent Evolution

McGhee, George R.; Hue, Isabelle; Dardaillon, Justine; Pontarotti, Pierre

doi:10.1007/978-3-319-95954-2_18

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…Pristification is strictly the evolution of the structure; as previously discussed, saws are not tied to a specific bauplan even though they are only found in benthic species. It is a type of iso-convergence according to the terminology of McGhee et al (2018), because saws are derived from the same precursor traits. Its definition limits it to cartilaginous fishes (Chondrichthyes), since they are the only group possessing both cartilaginous rostra and denticles (i.e., placoid scales).…”

Section: Defining Pristificationmentioning

confidence: 99%

Pristification: Defining the convergent evolution of saws in sharks and rays (Chondrichthyes, Neoselachii)

GREENFIELD

2024

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Convergent evolution is the development of analogous structures or bauplans in at least two independent lineages of organisms. Convergence is driven by the occupation of similar ecological niches and by various physical and phylogenetic constraints (McGhee, 2011). Despite the wide recognition of this phenomenon in evolutionary biology, formal terms and definitions for specific examples are rare. The most notable is carcinisation, which refers to the appearances of a crab-like bauplan among crustaceans (Keiler et al., 2017). Here the term ‘pristification’ is proposed for the convergence of saws in sharks and rays. It was coined previously in a preliminary publication (Greenfield, 2021a) but is formally defined for the first time. Not only does it highlight a remarkable convergent structure, but it also serves as a template for future terminology.

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Section: Defining Pristificationmentioning

confidence: 99%

Pristification: Defining the convergent evolution of saws in sharks and rays (Chondrichthyes, Neoselachii)

GREENFIELD

2024

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Section: Defining Pristificationmentioning

confidence: 99%

Pristification: Defining the convergent evolution of saws in sharks and rays (Chondrichthyes, Neoselachii)

Greenfield¹

2023

Preprint

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Saws are elongated rostra with enlarged denticles that are used for hunting and feeding. They convergently evolved in three groups of sharks and rays, the extinct sawskates and the extant sawsharks and sawfishes. Saws and saw-bearing fishes are briefly reviewed here, including their anatomy, ecology, and phylogeny. The term ‘pristification’ is proposed for this convergence and defined. It is an example of repeated, iso-convergent evolution and is the evolution of a structure without an associated bauplan.

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Prehistoric Stone Projectile Points and Technological Convergence

O’Brien

McGhee

2020

Evolutionary Biology—A Transdisciplinary Approach

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A Proposed Terminology of Convergent Evolution

Cited by 3 publications

References 16 publications

Pristification: Defining the convergent evolution of saws in sharks and rays (Chondrichthyes, Neoselachii)

Pristification: Defining the convergent evolution of saws in sharks and rays (Chondrichthyes, Neoselachii)

Pristification: Defining the convergent evolution of saws in sharks and rays (Chondrichthyes, Neoselachii)

Prehistoric Stone Projectile Points and Technological Convergence

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