[dinosaur] Seazzadactylus, new pterosaur from Upper Triassic of Italy (free pdf)

Ben Creisler
[email protected]

A new paper in open access:


Seazzadactylus venieri gen. et sp. nov.


Fabio Marco Dalla Vecchia (2019)
Seazzadactylus venieri gen. et sp. nov., a new pterosaur (Diapsida:
Pterosauria) from the Upper Triassic (Norian) of northeastern Italy.
PeerJ 7:e7363
doi: https://urldefense.proofpoint.com/v2/url?u=https-3A__doi.org_10.7717_peerj.7363&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=q6yJD2mTg2Q9astLitxKZrfwZsbiRpJkPg4VxFIMixg&s=8V_NM5GeXBYrUZNUvQwDLvXtZhDyFgWe7lAfZe4Kaiw&e= 
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Free pdf:
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A new non-monofenestratan pterosaur with multicusped dentition,
Seazzadactylus venieri, is described from the Upper Triassic (middle-upper
Norian) of the Carnian Prealps (northeastern Italy). The holotype of S.
venieri preserves a complete mandibular and maxillary dentition, along with
a nearly complete premaxillary one, showing unique features. Furthermore,
the arrangement of the premaxillary teeth and the shape of jugal,
pterygoid, ectopterygoid, scapula and pteroid are unique within
non-monofenestratan pterosaurs. S. venieri is similar and closely related
to Carniadactylus rosenfeldi and Austriadraco dallavecchiai, which are also
from the Alpine middle-upper Norian of Italy and Austria, respectively. In
a parsimony-based phylogenetic analysis, S. venieri is found to nest within
a clade of Triassic pterosaurs composed of Arcticodactylus cromptonellus,
Austriadraco dallavecchiai, Carniadactylus rosenfeldi and a trichotomy of
Raeticodactylus filisurensis, Caviramus schesaplanensis and MCSNB 8950.
This unnamed clade is basal within the Pterosauria, but is not the
basalmost clade. Eudimorphodon ranzii lies outside this clade and is more
derived, making the Eudimorphodontidae paraphyletic. S. venieri increases
the diversity of Triassic pterosaurs and brings the number of pterosaur
genera and species in the Dolomia di Forni Formation to four.


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