Vectiraptor

Source: Wikipedia, the free encyclopedia.

Vectiraptor
Temporal range:
Ma
Camellate pneumaticity inside the dorsal vertebrae of Vectiraptor greeni
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Family: Dromaeosauridae
Clade: Eudromaeosauria
Genus: Vectiraptor
Longrich, Martill & Jacobs, 2021
Species:
V. greeni
Binomial name
Vectiraptor greeni
Longrich, Martill and Jacobs, 2021

Vectiraptor (meaning "

dorsal vertebrae and a partial sacrum.[1]

Discovery and naming

Wessex Formation outcrops at Compton Bay, Isle of Wight, where the holotype was discovered.

Vectiraptor was initially discovered by amateur paleontologist Mick Green in 2004 in rocks of the

dorsal vertebrae. Later a partial sacrum of three vertebrae, IWCMS. 2021.31.2, would be discovered by the late Nick Chase. The element has been determined to belong to the holotype as all fossil elements were discovered over a short time period, and each find was located within several metres of the others. The holotype represents an adult individual, the age of which was estimated at twenty to thirty years on the basis of growth lines in the bone cortex. The vertebrae were donated to the collection of the Isle of Wight County Museum Service.[1]

The

Of large and wide dromaeosaurid teeth previously reported from Wight, such as the specimens IWCMS.2002.1, IWCMS.2002.3, IWCMS.2002.4 and BMNH R 16510,[2] the describing authors considered it likely that they in fact belonged to Vectiraptor, though they were not formally referred.[1]

Description

Size of Vectiraptor compared to a human
The posterior dorsal

The body length of Vectiraptor was estimated to be 2.5–3 metres (8.2–9.8 ft).[1]

The holotype includes two partial dorsal vertebrae and parts of the sacrum. Although fragmentary, the material shows a combination of features found only in the

ribs set on long stalks.[1]

Two

neural spines are robust with wide rough depressions for the attachment of ligaments.[1]

The vertebrae showed extensive pneumatisation. The dorsals had pleurocoels through which the air sacs of the respiratory system entered the vertebral bodies, forming large camellate air spaces. The diapophysal fossa also invaded the neural arch. The neural canals were expanded to behind, embaying the top of the centrum. The sacral vertebrae lacked pleurocoels and had a spongy bone structure. Their combined neural canal was so wide however, that it might have contained an air chamber, accessed by spaces between their partially fused neural arches.[1]

Phylogeny

A number of features, including the animal's large size, short dorsals, the presence of openings in the posterior dorsal vertebrae for

air sacs, and the tall and narrow in side view neural spines with ligament scars, suggest the animal is a member of, or related to, the Eudromaeosauria. The resemblance to eudromaeosaurs from North America suggests a faunal exchange between North America and Europe.[1]

References

  1. ^ .
  2. ^ Sweetman, S.C., 2004. "The first record of velociraptorine dinosaurs (Saurischia, Theropoda) from the Wealden (Early Cretaceous, Barremian) of southern England". Cretaceous Research 25: 353-364