scholarly journals Peer Review #1 of "The postcranial skeleton of Boreogomphodon (Cynodontia: Traversodontidae) from the Upper Triassic of North Carolina, USA and the comparison with other traversodontids (v0.1)"

2017 ◽  
Author(s):  
CF Kammerer
Keyword(s):  
North Carolina ◽  
Peer Review ◽  
Upper Triassic ◽  
Postcranial Skeleton

scholarly journals The postcranial skeleton ofBoreogomphodon(Cynodontia: Traversodontidae) from the Upper Triassic of North Carolina, USA and the comparison with other traversodontids

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3521 ◽  
Author(s):  
Jun Liu ◽  
Vincent P. Schneider ◽  
Paul E. Olsen
Keyword(s):  
North Carolina ◽  
Normal Form ◽  
Anterior Margin ◽  
Upper Triassic ◽  
Postcranial Skeleton ◽  
Allometric Growth ◽  
Anterior Process ◽  
Limb Bones ◽  
Postcranial Remains

Postcranial remains ofBoreogomphodonfrom the Upper Triassic of North Carolina are described and compared to those of other known traversodontid cynodonts. The postcranial skeleton ofBoreogomphodonis characterized by four sacral ribs, simple ribs lacking costal plates, the extension of the scapular neck below the acromion process, a short scapular facet on the procoracoid, a concave anterior margin of the procoracoid, humerus entepicondyle with smooth corner, and the presence of a fifth distal carpal. Four types of ribs are identified among traversodontids: ‘normal’ form, tubercular rib, costal plate, and Y-shaped rib. Fossorial behavior is suggested for traversodontids with elaborate costal plates. Within Traversodontidae, the procoracoid is relatively small; the anterior process of the iliac blade extends anteroventrally to different degrees in different taxa, which facilitates retraction of the femur; and the limb bones show allometric growth in terms of length and width.

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