Skip to main content

Advertisement

Table 1 Comparisons between body and tooth sizes of freshwater plesiosaurians

From: The first record of freshwater plesiosaurian from the Middle Jurassic of Gansu, NW China, with its implications to the local palaeobiogeography

Specimen Taxon Tooth size Body size Reference
IVPG-S01 Pliosauridae
Gen. et sp. indet
L ≈ 18.4 mm
H ≈ 9.7 mm
D ≈ 3.8 mm
Small This study
ZDM 4001 Pliosauroidea
Gen. et sp. indet
L ≈ 70 mm
H ≈ 37 mm
D ≈ 14.8 mm (M)
Large
About 4 m long
Peng et al. 2005
CMN 9454 (two teeth) Elasmosauridae
Gen. et sp. indet
L ≈ 9.1 cm; 6.7 cm
H ≈ 30 mm; 25 mm
D ≈ 9 mm (M); 7 mm (M)
Small Sato and Wu 2006
NMV P198945 Pliosauridae
Gen. et sp. indet
L > 45.1 mm Large
About 4 m long
Benson et al. 2013
NMV P228442
NMV P212943
Plesiosauria
Gen. et sp. indet
H ≈ 17.9 mm; 10.8 mm
D ≈ 7.7 mm (M); 4 mm (M)
Small Benson et al. 2013
Axel Heiberg specimens (two teeth) Elasmosauridae
Gen. et sp. indet
H = 12.45 mm; 18.34 mm
D = 3.61 mm; 3.12 mm
Small
No more than 3.9 m long
Vandermark et al. 2006
AM F105661
AM F112844
AM F121679
AM F121720
NMV P186376
NMV P186416
Pliosauroidea
Gen. et sp. indet
H ≈ 4.8–53.5 mm Small
About 2–3 m long
Kear 2006
QM F4008 Plesiosauria
Gen. et sp. indet
H ≈ 37.4 mm About 3–4 m long Kear 2012
SMNS 16812 Plesiosauria
Gen. et sp. indet
H ≈ 5–14.7 mm (M) Small O’Keefe 2004
  1. In Peng et al. 2005, the tooth ZDM 4001 belonged to Bishanopliosaurus youngi and placed under Rhomaleosauridae. In Vandermark et al. 2006, the two teeth were called Axel Heiberg specimens, and they have no specimen number
  2. L = Tooth length; H = Crown height; D = Basal diameter of crown; M = Measured data according to the tooth picture in the original paper
  3. ZDM Zigong Dinosaur Museum; CMN Canadian Museum of Nature; NMV Museum Victoria, Melbourne; AM Australian Museum, Sydney; QM Queensland Museum, Brisbane; SMNS Staatliches Museum für Naturkunde, Stuttgart