Monquirasaurus
Monquirasaurus is a giant pliosaurid from Colombia, South America. Originally named by Hampe (1992) as a species of Kronosaurus (K. boyacensis), the skeleton was later allocated to the new genus Monquirasaurus by Noè and Gómez-Pérez (2021). The genus name derives from ‘Monquira’, the administrative division in which the holotype was discovered. Monquirasaurus skeleton. From Hampe (1992). Monquirasaurus reconstruction. From Hampe (1992)...
The Stewartby Pliosaur and the 1967 Liopleurodon reconstruction
Newman and Tarlo (1967) In 1967, Barney Newman and Lambert Beverley Tarlo authored a three-page short article in the popular magazine ‘Animals’, a short-lived periodical published weekly by Purnell from 1963 to, at least, 1967… I’m not sure when it eventually fizzled out. Their article entitled “A Giant Marine Reptile From Bedfordshire” provides an account of plesiosaur swimming...
Anguanax
Anguanax is the first articulated plesiosaur ever found in Italy. It is a basal thalassophonean pliosaur from the Late Jurassic (middle Oxfordian). The type and only known specimen (MPPL 18797) of Anguanax was originally described as an indeterminate pliosaurid (Cau and Fanti 2014), but was subsequently named after reanalysis by the same authors the following year (Cau and Fanti 2015)....
Pliosaurus
Under construction Skull of Pliosaurus kevani in right lateral view. From Benson et al. (2013). The ‘Westbury Pliosaur 1’ specimen of Pliosaurus brachyspondylus, skull on display in the Bristol Museum and Art Gallery. Photo by Chris Crump. The ‘Westbury Pliosaur 1’ specimen of Pliosaurus brachyspondylus, skull on display in the Bristol Museum and Art Gallery. Photo by Chris Crump. Holotype...
Marmornectes
Marmornectes is a pliosaur with a long and narrow snout from the Oxford Clay. It was described and named by Ketchum and Benson (2011a). The type and only specimen (BEDFM 1999.201) comprises a substantially complete skeleton including a partial skull. Marmornectes is similar to Peloneustes but possesses some basal characters that were lost in Peloneustes and other more derived pliosaurids...
Bishanopliosaurus
Bishanopliosaurus is the most complete plesiosaur known from the Jurassic of Asia (Sato et al. 2003). The holotype specimen of the type species, B. youngi, is a partial postcranial skeleton of a juvenile individual from the Dongyuemiao Member of the Ziliujing Formation (Lower or Mid Jurassic) of Bishan County, Chongqing, China. It was first described and named by Dong (1980),...
Hauffiosaurus
Hauffiosaurus is a basal pliosaurid known from the Lower Jurassic (Toarcian) of the UK and Germany. Hauffiosaurus is a medium to large sized plesiosaur (H. zanoni = 3.4 m, H. tomistomimus, 4.23 m, H. longirostris = 4.83 m) (Smith and Lomax 2019), with a relatively long neck for a pliosaur, and an elongate narrow snout. The genus Hauffiosaurus was named...
Anningasaura
Anningasaura is a basal plesiosaur from the Lower Jurassic of Lyme Regis, UK, known from a single three-dimensionally preserved skull. The specimen, NHMUK OR49202, was originally described and figured by Andrews (1896), who referred it to ‘Plesiosaurus‘ macrocephalus. It was redescribed and named as the holotype of Anningasaura lymense by Vincent and Benson (2012). Cast of the holotype skull of...
Thaumatodracon
Thaumatodracon is a relatively large rhomaleosaurid from the Lower Jurassic (Sinemurian) of Lyme Bay – the coast between Lyme Regis and Charmouth – UK. The holotype specimen (NLMH 106.058) is an almost complete skull and cervical (neck) series. It has a 60 cm long skull, and based on comparison with other rhomaleosaurids I estimate its total body length to be 6.5...