A monograph of the East American scaphopod mollusks

Henderson, John

doi:10.5479/si.03629236.111.1

Cited by 14 publications

(27 citation statements)

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“…Graptacme perlonga (Dall, 1881) Distribution: USA -North Carolina to Florida-; Gulf of Mexico; Puerto Rico (Raffucci 2007); Grenada; Brazil -Ceará, Bahia and Rio de Janeiro- (Henderson 1920. Specimens with soft parts collected between 1000 and 1600 m depths; empty shells between 200 and 4850 m depths , Steiner & Kabat 2004.…”

Section: Methodsmentioning

confidence: 99%

“…Graptacme eborea (Conrad, 1846) Distribution: USA -North Carolina, Florida, Georgia- (Henderson 1920, Camp et al 1998, Wolfe 2008; Santo Domingo; Puerto Rico (Raffucci 2007); Antigua; Yucatan; Venezuela (Buitrago et al 2006); Brazil -Pará, Maranhão, Rio Grande do Norte, Espírito Santo, Rio de Janeiro, Abrolhos, Fernando de Noronha and Atol das Rocas- (Scarabino 1975, 1994, Rios & Barcellos 1980. Specimens with soft parts collected between 16 and 95 m depths (Lewis 1965); empty shells between 5 and 195 m depths (Caetano & Scarabino 2009).…”

Section: Methodsmentioning

confidence: 99%

“…Antalis taphria (Dall, 1889) Distribution: USA -North Carolina, Florida, Georgia- (Henderson 1920, Camp et al 1998, Wolfe 2008); Cuba -Havana-; Puerto Rico (Raffucci 2007); Yucatan (Turner 1955); Brazil -Fernando de Noronha, Atol das Rocas, Amapá to Rio de Janeiro- (Scarabino 1975, 1994. Specimens with soft parts collected between 41 and 90 m depths; empty shells between 15 and 692 m depths (Steiner & Kabat 2004).…”

Section: Methodsmentioning

confidence: 99%

“…Antalis pilsbryi (Rehder, 1942) Distribution: USA -Florida- (Camp et al 1998); Brazil -São Paulo- (Henderson 1920, Scarabino 1975, 1994. Empty shells between 0 and 15 m depths (Steiner & Kabat 2004).…”

Section: Methodsmentioning

confidence: 99%

“…The first species reported in Brazil were described by Watson (1879): Siphonodentalium tetraschistus, found in Fernando de Noronha Island and Dentalium circumcinctum, in the state of Pernambuco. Henderson (1920) led the first monographic work that dealt with Western Atlantic Scaphopoda. The review studied 110 species, 11 of which were identified in Brazil.…”

Section: Introductionmentioning

confidence: 99%

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A commented list of Scaphopoda (Mollusca) found along the Brazilian coast, with two new synonymies in the genus Gadila Gray, 1847

2013

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This review aims to present an updated checklist of scaphopods, based mainly on literature database. There is a total of 40 species (six families) for Brazil, including information about the distribution and bathymetric range of each taxon. We propose two synonyms with the aid of morphometry of the shell, for the genus Gadila: G. longa as junior synonym of G. elongata and G. robusta as junior synonym of G. pandionis.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A commented list of Scaphopoda (Mollusca) found along the Brazilian coast, with two new synonymies in the genus Gadila Gray, 1847

2013

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Metazoa

Claus¹

1932

Lehrbuch Der Zoologie

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The scaphopoda

Reynolds¹

2002

Molluscan Radiation - Lesser-Known Branches

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The Scaphopoda are marine infaunal carnivores that feed on foraminiferans and other microorganisms selected and manipulated by their unique feeding tentacles or captacula. Their tusk-like shell is open at both ends; the burrowing foot and captacula protrude anteriorly, while respiratory currents pass through the posterior opening. Although the scaphopods comprise one of the smallest molluskan classes in terms of species diversity, they have a worldwide distribution ranging from intertidal to depths in excess of 6000 m. Despite detailed monographic work from the late nineteenth and early twentieth centuries, however, the biology of scaphopods is today among the least understood of mollusks. To some extent, this is related to a significant departure from more typical molluscan organization inferred from studies of the larger classes. For example, the mantle cavity is elongate and restricted in space, and several associated organs are lost, including the osphradium and ctenidia; the latter is associated with the loss of auricles from the scaphopod heart. There is also little record of ontogeny in the adult shell, as the older portion is periodically decollated to maintain the posterior aperture for passage of inhalant and exhalant currents. This and other constraints on scaphopod diversification are reflected in the range limits of shell shape within the class. In contrast, the "Dentalium" egg has been a model system for experimental embryology, particularly in studies of cell lineage and early morphogenesis. Later larval development and most organogenesis is nonetheless poorly known, although recent studies have considerably enhanced our knowledge in this area. Global biogeographic patterns of scaphopod diversity have been studied only preliminarily. A general decrease in diversity with depth is broken by small diversity peaks at bathyal depths. There is also evidence for a marked latitudinal diversity gradient in the world's oceans, near equatorial in the Pacific but at approximately 20 degrees N in the Atlantic. Scaphopods have a wide diversity of ecto- and endo-symbiotic associations with other organisms, including commensal bacteria and ciliates, mutualistic anemones and corals, and parasitic algae and platyhelminths. Other documented associations include predation by naticid gastropods and ratfish, and the inhabitation of empty scaphopod shells by a variety of sipunculans and hermit crabs. Phylogeny within the class is still unresolved, although significant progress has been made recently in documenting morphological variation among families, genera, and species for application in a cladistic context. The evolutionary relationships of Scaphopoda within Mollusca are farther from resolution, with every conchiferan class a proposed sister group among modern analyses. Molecular avenues should provide significant progress in scaphopod phylogenetics, as indicated by recent comparative sequence analysis and gene expression patterns. Scaphopods comprise the most recent class of mollusks to appear in the fossil record,...

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A monograph of the East American scaphopod mollusks

Cited by 14 publications

References 0 publications

A commented list of Scaphopoda (Mollusca) found along the Brazilian coast, with two new synonymies in the genus Gadila Gray, 1847

A commented list of Scaphopoda (Mollusca) found along the Brazilian coast, with two new synonymies in the genus Gadila Gray, 1847

Metazoa

The scaphopoda

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