Le genre d'échinide s dans les dans les localités du Pliocène et du Pléistocène d'Emilie (Italie du Nord)

Néraudeau, Didier; Borghi, Enrico; Roman, Jean

doi:10.1016/s0753-3969(99)80001-9

Cited by 10 publications

(2 citation statements)

References 2 publications

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“…Unfortunately, while pedicellariae are occasionally reported in post-Triassic echinoids (e.g. Groom 1887;Geis 1936;Mortensen 1937;Philip 1962;Zankl 1965;Nestler 1966Nestler , 1978Nestler , 1979Hess 1971Hess , 1972Hess , 1973Hess , 1975Kozur and Mostler 1973;Smith and Wright 1989;Krainer et al 1994;Reich and Frenzel 2002), especially in Pleistocene ones (Borghi 1993(Borghi , 1994(Borghi , 1995(Borghi , 1997a(Borghi ,b, 1998(Borghi , 1999Néraudeau et al 1998), there has been no attempt to synthesize this fossil information and no modern SEM studies on their structure.…”

Section: The Fossil Record Of Pedicellariaementioning

confidence: 99%

The evolution of pedicellariae in echinoids: an arms race against pests and parasites

Coppard¹,

Kroh²,

Smith³

2010

Acta Zoologica

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Coppard, S.E., Kroh, A. and Smith, A.B. (2010). The evolution of pedicellariae in echinoids: an arms race against pests and parasites. —Acta Zoologica (Stockholm) 00:1–24. Sea urchins (Echinoidea) have evolved a diverse array of jawed appendages termed pedicellariae to deter pests and predators. Pedicellarial structure and function are reviewed and their distribution mapped in 75 extant genera. Using a phylogeny of echinoids at family level constructed from 353 skeletal characters scored across 162 extant and fossil taxa, the evolution of pedicellarial form and function is reconstructed. For much of the Palaeozoic echinoids possessed a very restricted pedicellarial armament. By the early Mesozoic a diverse array of pedicellarial types had become established, implying that the threat from predators and pests markedly increased at this time. Since the Triassic, echinoids have continued to improve their defensive capability by evolving more effective venom delivery in globiferous pedicellariae, developing spatulate‐tips and curved blades for a more efficient grab in tridentate pedicellariae, and stouter, more robust valves with a stronger bite in ophicephalous pedicellariae to disable and remove ectoparasites. However, pedicellarial types are shown to be particularly prone to subsequent secondary loss, especially among infaunal echinoids, and thus have higher homoplasy levels than other phylogenetically useful skeletal structures.

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Section: The Fossil Record Of Pedicellariaementioning

confidence: 99%

The evolution of pedicellariae in echinoids: an arms race against pests and parasites

Coppard¹,

Kroh²,

Smith³

2010

Acta Zoologica

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“…Spatangus also has enlarged aboral primary tubercles (e.g. Néraudeau et al 1998;Kroh 2005), but their structure is very different (Fig. 8).…”

Section: Dimensionsmentioning

confidence: 99%

Echinoids from the Belpberg Beds (Obere Meeresmolasse, Middle Burdigalian) in the area of Bern (Switzerland)

Kroh

Menkveld-Gfeller

2006

Eclogae geol. Helv.

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Un siècle de paléontologie des échinodermes gravé dans les Annales de Paléontologie

Néraudeau

2006

Annales de Paléontologie

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Le genre d'échinide s dans les dans les localités du Pliocène et du Pléistocène d'Emilie (Italie du Nord)

Cited by 10 publications

References 2 publications

The evolution of pedicellariae in echinoids: an arms race against pests and parasites

The evolution of pedicellariae in echinoids: an arms race against pests and parasites

Echinoids from the Belpberg Beds (Obere Meeresmolasse, Middle Burdigalian) in the area of Bern (Switzerland)

Un siècle de paléontologie des échinodermes gravé dans les Annales de Paléontologie

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