Hypoprion bigelowi, a Synonym of Carcharhinus signatus (Pisces: Carcharhinidae), with a Description of Ontogenetic Heterodonty in This Species and Notes on Its Natural History

Raschi, William; Musick, John A.; Compagno, Leonard J. V.

doi:10.2307/1444274

Cited by 19 publications

(17 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The presence of labial cusplets (Text- fig. 6B) on P. serra may be evidence of intraspecific variation or the presence of sexually based heterodonty which is seen in the dentition of some fossil (Parmley and Cicimurri 2003) and extant shark species (Raschi et al 1982). The same labial cusplets are apparent in other teeth attributed to P. serra from Iran (Ginter et al 2002, pl.…”

Section: Remarksmentioning

confidence: 88%

Upper Devonian microvertebrates from the Canning Basin, Western Australia

Roelofs

Playton

Barham

et al. 2015

Acta Geologica Polonica

View full text Add to dashboard Cite

A diverse microvertebrate fauna is described from the Virgin Hills and Napier formations, Bugle Gap Limestone Canning Basin, Western Australia. Measured sections at Horse Spring and Casey Falls (Virgin Hills Formation) and South Oscar Range (Napier Formation) comprise proximal to distal slope carbonates ranging in age from the Late Devonian Frasnian to middle Famennian. A total of 18 chondrichthyan taxa are identified based on teeth, including the first record of Thrinacodus tranquillus, Cladoides wildungensis, Protacrodus serra and Lissodus lusavorichi from the Canning Basin. A new species, Diademodus dominicus sp. nov. is also described and provides the first record of this genus outside of Laurussia. In addition, the upper range of Australolepis seddoni has been extended to Late Devonian conodont Zone 11, making it the youngest known occurrence for this species. The Virgin Hills and Napier formations microvertebrate faunas show close affinities to faunas recovered from other areas of Gondwana, including eastern Australia, Iran, Morocco and South China, which is consistent with known conodont and trilobite faunas of the same age.

show abstract

Section: Remarksmentioning

confidence: 88%

Upper Devonian microvertebrates from the Canning Basin, Western Australia

Roelofs

Playton

Barham

et al. 2015

Acta Geologica Polonica

View full text Add to dashboard Cite

show abstract

“…Although external isometry of the head has been observed in at least a few species of elasmobranchs (Bass, 1973;Ferry-Graham, 1998b), many species from several orders exhibit allometry of the head (Bas, 1964;Bass, 1973; Mun Ä oz-Cha Âpuli & Ruiz, 1984;Yano & Musick, 1992;Ellis & Shackley, 1995). Other than heterodonty (Raschi, Musick & Compagno, 1982;Kajiura & Tricas, 1996), internal allometry of the head has not yet been reported in elasmobranchs, although it is implied by allometry in some external measurements (Bas, 1964;Bass, 1973;Mun Ä oz-Cha Âpuli & Ruiz, 1984;Yano & Musick, 1992;Ellis & Shackley, 1995). At present, however, it appears that the entire head of G. cirratum grows isometrically relative to the length of the body and as a unit unto itself.…”

Section: Isometry Of the Feeding Mechanismmentioning

confidence: 99%

Patterns of growth and the effects of scale on the feeding kinematics of the nurse shark (Ginglymostoma cirratum)

Robinson

Motta

2002

Journal of Zoology

View full text Add to dashboard Cite

Successful capture of prey often depends, in part, on the magnitude, duration and speed of feeding behaviours. Animal size and experience are potentially important to these aspects of behaviour, but the effects of scale on the muscular dynamics of and capture by aquatic vertebrates remain relatively unknown. This study examines scale effects on prey capture kinematics in the nurse shark Ginglymostoma cirratum, an inertial suction feeder. Morphometric analyses were performed on the heads and feeding apparati of 12 specimens between 71 and 244 cm total length (TL). These data indicated isometric growth of the feeding apparatus. The kinematics of prey capture in another 12 specimens (33 to 268 cm TL) were recorded with high speed video (200 fps). Across the size range, maximal angular excursions remained constant whereas the maxima of linear excursions increased isometrically. However, various phases of the prey capture sequence apparently did not increase in duration. Regressions of the components of prey capture timing generally had slopes between 0 and 0.5, supporting a model of muscular scaling initially proposed for largemouth bass. This model implies that increases in the duration of prey capture are the result of physiological constraints on muscular contraction. There is also a pattern of scaling across several taxa of aquatic vertebrates consistent with a second model of musculoskeletal scaling, although it does not necessarily apply within each taxon.

show abstract

“…Where the clasper exits the pelvic scroll, a cavernous muscular siphon sac extends laterally from the clasper groove. The siphon sacs are confined to the claspers, similar to that found in Chtamydosetachus anguineus (Leigh-Sharpe, 1926;Gilbert, 1943) The night shark is found in tropical waters of both the eastern and western Atlantic (Raschi et a/., 1982). In the western Atlantic it is reported from the east coast of the United States, through the Antilles, to southern Brazil, and is most common off Cuba and southern Florida (Compagno, 1978b).…”

Section: Hexanchus Griseus (Bonnaterre 1788)mentioning

confidence: 58%