Inertial suction feeding is known to occur in some sharks, but the sequence and temporal kinematics of head and jaw movements have not been defined. We investigated the feeding kinematics of a suction feeding shark, the nurse shark Ginglymostoma cirratum, to test for differences in the timing and magnitude of feeding components with other shark taxa when sharks were fed pieces of bony fish. Thi...

A new, and presumably extinct, species representing the genus Mallomonas, M. schumachii, is described from an Eocene maar lake situated near the Arctic Circle in northern Canada. The new species bears bristles and possesses three types of scales. Body scales are large, square-shaped, with a posterior rim encircling approximately half of the perimeter, a thick secondary layer of closely spaced h...

Okranema eileenae is a marine nematode from Australian sandy beaches. The structure of its cephalic region is described by light, scanning, and transmission electron microscopy. Three large lips, separated by three deep clefts and surmounted by flexible liplets, surround the mouth. Transverse and longitudinal sections of the head have been used to investigate the ultrastructure of the lips, buc...

Ichthyoliths—microfossil fish teeth and shark dermal scales (denticles)—are found in nearly all marine sediments. Their small size and relative rarity compared to other microfossil groups means that they have been largely ignored by the paleontology and paleoceanography communities, except as carriers of certain isotopic systems. Yet, when properly concentrated, ichthyoliths are sufficiently ab...

BACKGROUND Scleroderma is a chronic connective tissue disorder with unknown etiology. It is characterized by excessive deposition of extracellular matrix in the connective tissues causing vascular disturbances which can result in tissue hypoxia. These changes are manifested as atrophy of the skin and/or mucosa, subcutaneous tissue, muscles, and internal organs. Such changes can be classified in...

Correspondence: Dr MD Scarlett, Department of Surgery, Radiology, Anaesthesia and Intensive Care, The University of the West Indies, Kingston 7, Jamaica, West Indies. Fax: 977-6160, e-mail: [email protected] CASE REPORT A 12-year-old boy of height 130 cm and weight 26.9 kg was scheduled for elective right orchidopexy for an undescended right testis and herniotomy for right inguinal hernia. Russ...

The first dental case report of a patient with focal dermal hypoplasia syndrome (FDHS) is presented. A review of signs and symptoms of FDHS is presented along with newly reported oral findings. This patient apparently is the first person with FDHS to have an absent sternum and the fifteenth person reported with confirmed osteopathia striata. Carious lesions can be difficult to restore in FDHS d...

O culodentodigital syndrome (ODD; OMIM 164200) is a congenital disorder characterised by developmental abnormalities of the face, eyes, limbs, and dentition. ODD is inherited in an autosomal dominant fashion and displays high penetrance but variable expression. In addition, a high rate of de novo mutations is observed. Facially, affected patients exhibit a long, narrow nose with hypoplastic ala...

Background: The prevalence of dental anomalies in children with cleft lip and palate (CLP) has been said to be higher than in the normal children; however, such findings have not been expressed for different racial groups. Aim: To determine the prevalence of anomalies in children with CLP and to ascertain if there were any differences between the prevalence figures for CLP and non-CLP children....

Chromosome 11q13 deletion syndrome has been previously reported as either otodental syndrome or oculo-oto-dental syndrome. The otodental syndrome is characterized by dental abnormalities and high-frequency sensorineural hearing loss, and by ocular coloboma in some cases. The underlying genetic defect causing otodental syndrome is a hemizygous microdeletion involving the FGF3 gene on chromosome ...