Comparative bone histology of two thalattosaurians (Diapsida: Thalattosauria): Askeptosaurus italicus from the Alpine Triassic (Middle Triassic) and a Thalattosauroidea indet. from the Carnian of Oregon (Late Triassic)

Swiss Journal of Palaeontology

Table 1 Material included in this study. The material of Askeptosaurus italicus is from the locality of Monte San Giorgio (middle Besano Formation, late Anisian). The material of the thalattosauroid (Thalattosauria indet.) from Oregon, USA, comes from the Brisbois Member of the Vester Formation and is of late Carnian age

Taxon	Bone	Comment
Askeptosaurus italicus
PIMUZ T 4839 (large individual)	Right femur 12 cm long	Cross section
	Left femur not measured because incompletely preserved	Cross section
	Centrum of anterior tail vertebra (PIMUZ T 4839_vert_a)	Transverse section centrum very compacted
	Centrum of posterior tail vertebra (PIMUZ T 4839_vert_b)	Transverse section centrum very compacted
	Rib	Cross section
PIMUZ T 4840 (small individual)	Right femur 8.5 cm	Cross section
	Gastralium	Cross section
Thalattosauria indet.
MNCH F71616	Middle dorsal centrum	Transverse section
MNCH F71616	2.1 cm length, 2.85 cm height, 3.28 cm width	Transverse section
MNCH F70662	Posterior dorsal centrum	Sagittal section
MNCH F70662	1.8 cm length, 2.55 cm height, 3.1 cm width	Sagittal section
MNCH F64330	Middle caudal centrum	Sagittal section Figure 2.16 in Metz, 2019
MNCH F64330	1.91 cm length, 3.1 cm height, 3.11 cm width	Sagittal section Figure 2.16 in Metz, 2019
MNCH F64316	Left humerus 8.1 cm long	Core sample Transverse section Figure 2.18 in Metz, 2019
MNCH F64270	Humerus 7.1 cm long	Core sample Longitudinal section/cut obliqually