First record of the extinct sawfish Propristis schweinfurthi Dames, 1883 (Batoidea: Pristiformes: Pristidae) from the middle Eocene of Spain

Farrés, Francesc; Fierstine, Harry L.

doi:10.1007/s12542-009-0029-1

Cited by 5 publications

(5 citation statements)

References 7 publications

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“…Sawfishes were the latest to evolve, appearing in the Ypresian stage of the early Eocene (Cappetta, 2012). They likewise consist of two extant genera (Pristis, Anoxypristis) and two extinct genera (Propristis, Mesopristis) (Farrés & Fierstine, 2009). Their closest relatives are guitarfishes (Rhinobatoidei) (Pavan-Kumar et al, 2020).…”

Section: Saw-bearing Fishesmentioning

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: Saw-bearing Fishesmentioning

confidence: 99%

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

GREENFIELD

2024

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“…Sawfishes were the latest to evolve, appearing in the Ypresian stage of the early Eocene (Cappetta, 2012). They likewise consist of two extant genera (Pristis, Anoxypristis) and two extinct genera (Propristis, Mesopristis) (Farrés & Fierstine, 2009;Faria et al, 2013). Their closest relatives are guitarfishes (Rhinobatoidei) (Pavan-Kumar et al, 2020).…”

Section: Saw-bearing Fishesmentioning

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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“…Lignified remains of plants, sponges and invertebrate marks are represented in the Vespella marls member (Farrés, 2003). Osteichthyan fishes were discovered at the base of the Terminal Complex (CT, in Farrés et al, 2016;Carnevale et al, 2018) at a level which is positioned in lateral passage with the Sant Martí Xíc Formation that provided Eocenochelus: this level corresponds to the end of the Eocene marine deposits and is situated just below the continental Artés Formation s. l. (Farrés, 1961(Farrés, , 1993(Farrés, , 2003Farrés and Altimiras, 2007;Farrés and Fierstine, 2009;Staid-Staadt, 1964, 2009;Farrés et al, 2005Farrés et al, , 2016Farrés i Malián, 1960, 2002) (See additive fossils in the series and sedimentology in Farrés et al, 2016. ) All these discoveries highlight the great diversity of fossils from Osona County, deposited in the Ebro Basin and coming from both the littoral zone and the shore of the continental region.…”

Section: Other Fossils Discovered With the Turtles In Osona Countymentioning

confidence: 99%

The turtles from the upper Eocene, Osona County (Ebro Basin, Catalonia, Spain): new material and its faunistic and environmental context

Murelaga¹,

Pérez‐García

Farrés

et al. 2018

Foss. Rec.

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Abstract. Eochelone voltregana n. sp. is a new marine cryptodiran cheloniid found at the Priabonian levels (latest Eocene) of the Vespella marls member of the Vic–Manlleu marls formation. It is the second cheloniid from Santa Cecília de Voltregà (Osona County, Spain), the first one being Osonachelus decorata from the same formation. Shell parameters indicate that the new species belongs to a branch of sea turtles including the Eocene Anglo–Franco–Belgian forms Argillochelys, Puppigerus and Eochelone (the shell of the latter was studied here for the first time) as well as Glarichelys from the Oligocene of Switzerland, all of them predating the worldwide living Miocene genera. The description of two other more littoral–continental Eocene species is given: Trionyx sp., from an older layer of the same formation; and the podocnemidid erymnochelyine, Cordichelys from a more basal layer of a middle Eocene (Lutetian) formation. The last one is identified as the only evidence of the Shweboemys subgroup in the European record, being distinct from the other known Osona County pleurodire Eocenochelus farresi, which is a member of the Erymnochelys group (same subfamily), from the younger Priabonian Sant Martí Xic layer. Thus, an update on the marine turtle fauna of the eastern Ebro Basin that variably opened in the east during Eocene times is provided. The turtles of Osona County belong to two suborders and five genera with three new species and extend the known distribution of their families (LSID urn:lsid:zoobank.org:act:48CE8676-7B82-4EF2-8165-27BEE90129F2).

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First record of the extinct sawfish Propristis schweinfurthi Dames, 1883 (Batoidea: Pristiformes: Pristidae) from the middle Eocene of Spain

Cited by 5 publications

References 7 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)

The turtles from the upper Eocene, Osona County (Ebro Basin, Catalonia, Spain): new material and its faunistic and environmental context

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