A haemal arch, also known as a chevron, is a bony arch on the ventral side of a tail vertebra of a vertebrate. The canal formed by the space between the...

Dasygnathoides is known from a right maxilla and pterygoid, a partial vertebra, a haemal arch and a phalanx, an articular and an osteoderm. They all come from the...

arch extending from the top of the centrum is called a neural arch, while the haemal arch is found underneath the centrum in the caudal (tail) vertebrae...

neurocranium, partial dorsal vertebrae, fourteen caudal vertebrae with some haemal arches, a partial left scapula, right pubic peduncle, part of both tibiae and...

like a paddle. The tail also has haemal arches, a feature lost in all other Australian chelids. While haemal arches are documented in many cryptodiran...

and 18 haemal arches (bones from the tail) that include a sequence of 17 anterior and middle caudal vertebrae and their corresponding haemal arches found...

Mendozasaurus, while the relative shortness of the haemal canal relative to the rest of the haemal arch distinguishes Triunfosaurus from Andesaurus and other...

disarticulated skull, cervical, dorsal, sacral, and caudal vertebrae, ribs and haemal arches, partial pectoral and pelvic girdles, and the right arm and leg. In...

large haemal arches located at the bottom of each caudal vertebra which bend near the middle of the tail, which contrasts with the reduction of haemal arches...

vertebrae, a partial sacrum, twelve caudal vertebrae, an incomplete haemal arch, partial left femur and fibula, partial right tibia and calcaneus, and...

arch extending from the top of the centrum is called a neural arch, while the haemal arch or chevron is found underneath the centrum in the caudal vertebrae...

They lacked intercentra, even in the tail, and had are no free haemal arches. The neural arch was low and fused to the centrum. All of these features are...

incomplete but fully articulated, comprising 20 caudal vertebrae, 19 haemal arches, most of the pelvic girdle (both ischia, pubes, and the bottom part...

fused with the vertebrae. The caudal vertebrae often articulate with haemal arches ventrally. The number of caudal vertebrae in animals can vary greatly...

complete ilio-sacral block and pelvic girdle, seven caudal vertebrae and haemal arches, some dorsal ribs, the left scapulocoracoid and a partial left forelimb...

four dorsal vertebrae, two ribs, seventeen caudal vertebrae, four haemal arches, a scapula and sternal plate, an ischium, and both femora, tibiae, and...

end) caudal vertebrae, some of which are preserved with associated haemal arches. In the approximately 5-metre (16 ft) gap between the neck and tail...

vertebrae from the back, sacrum and tail, eleven thoracic ribs, a single haemal arch or chevron bone, several gastralia, a third manual ungual, complete left...

(openings in bone), a trait potentially diagnostic of Tameryraptor. Two haemal arches, or chevrons, were preserved in this individual as well. The pelvis...

middle vertebrae are more elongated with marked articular facets for haemal arches. In the posterior caudal vertebrae, the centra are significantly longer...

have dwarfed transverse processes, lower neural arches, and proportionally elongated centra. The haemal arch is compressed transversely and distally, though...

vertebrae at most only slightly elongated, do not form an appreciable fin. Haemal arches unfused to caudal centra. Appendicular elements lack smoothly finished...

vertebrae and seven fused caudal vertebrae forming the club 'handle', ten haemal arches, four ribs, the left humerus, one metatarsal, and 41 osteoderms. An...

vertebra, small distal caudal vertebra, small distal caudal NHMUK OR39518. Haemal arch (chevron). NHMUK OR39519. Two phalanges. NHMUK OR39520. Ungual phalanx...

e. certain modified segments, of the whole body. The jaws are the 'haemal arches' of the first two segments; they are not limbs of the head" (p. 176)...

individual. This includes a femur, a partial tibia, a complete fibula, and a haemal arch. In their 1997 paper, Laurent and colleagues referred remains from the...

verterbae and seven fused caudal vertebrae forming the club 'handle', ten haemal arches, four ribs, the left humerus, one metatarsal, and 41 osteoderms. The...

which includes cervical, dorsal and caudal vertebrae, dorsal ribs, and a haemal arch, has been assigned to Lirainosaurus. A diagnosis is a statement of the...

caudal projection of the squamosal horns, form of cranial armour and haemal arch attachment. Arbour & Currie, 2015 considered that there are no unique...

dorsal ribs, and six sacral ribs; five other caudal vertebrae with two haemal arches; a right femur; and pelvic girdle elements, including an ilium, ischium...