3.2.1. Subgenus: Chelodina (Chelodina) Fitzinger 1826:6, per Georges and Thomson (2010)

Revised Diagnosis: Medium sized semi-aquatic turtles; length of head and neck equal to, or slightly less than, length of carapace; dorsum of neck with many blunt conical tubercles. Carapace oblong to oval, often flattened dorsoventrally when compared to other subgenera, often with reticulated ornamentation of scutes. Plastron broad, flaring anteriorly at pectoral scutes and posteriorly at femoral scutes; covers or almost covers anterior orifice of shell in ventral view. Intergular scute posteriorly tapered; length approximately twice that of suture between pectoral scutes. Dentary bones enlarged with a larger triturating surface area than in other subgenera; no dorsoventral flattening of skull. Atlas (C1) not elongated substantially; moderate elongation of cervical vertebrae 2–4 (centra about twice as long as wide). Transverse processes of cervical vertebrae thin and bladelike. Ilium in contact with 8 th pleural only, from anterior to posterior internal surface. Hyolaryngeal complex modified; some elongation of corpus hyoideum, though cornubranchiale only slightly enlarged and cylindrical in cross section, epibranchials cartilaginous throughout life. Anterior bridge struts small; suture with pleurals does not significantly encroach upon pleural 1; posterior bridge strut small, barely contacts pleurals. Exposed neural bones typically absent (occasional single exposed neurals in large adults). Fluid with a pungent odour secreted from ducts in the inguinal and axillary pockets when distressed.

Assigned Species: C. canni McCord & Thomson 2002; C. gunaleni McCord & Joseph-Ouni 2007b; C. longicollis (Shaw 1794); C. mccordi Rhodin 1994a; C. novaeguineae Boulenger 1888; C. pritchardi Rhodin 1994b; C. reimanni Philippen & Grossmann 1990; C. steindachneri Siebenrock 1914; † C. murrayi Yates 2013.

Vernacular name: Australasian long-necked turtles