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Excalibosaurus
Taxonomy
Excalibosaurus was named by McGowan (1986) [Sepkoski's age data: J Sine-l]. It is not extant.
It was synonymized subjectively with Eurhinosaurus by Maisch and Matzke (2000).
It was assigned to Eurhinosauria by Motani (1999); to Ichthyosauria by Sepkoski (2002); to Neoichthyosauria by Fischer et al. (2013); and to Leptonectidae by McGowan and Motani (2003), Maisch (2010), Ji et al. (2016).
It was synonymized subjectively with Eurhinosaurus by Maisch and Matzke (2000).
It was assigned to Eurhinosauria by Motani (1999); to Ichthyosauria by Sepkoski (2002); to Neoichthyosauria by Fischer et al. (2013); and to Leptonectidae by McGowan and Motani (2003), Maisch (2010), Ji et al. (2016).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1986 | Excalibosaurus McGowan |
| 1999 | Excalibosaurus Motani p. 482 |
| 2002 | Excalibosaurus Sepkoski |
| 2003 | Excalibosaurus McGowan and Motani |
| 2010 | Excalibosaurus Maisch |
| 2013 | Excalibosaurus Fischer et al. |
| 2016 | Excalibosaurus Ji et al. p. 12 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. Ji et al. 2016 | Size 6 m; snout and mandible slender; mandible shorter than skull but longer than 50% of the latter; prominent acromion process of scapula present; forefin with three digits and one postaxial accessory digit; number of phalanges in longest digit of forefin <16; ischium and pubis not fused. |