Unicuspid and bicuspid tooth crown formation in squamates

2011 ◽  
Vol 316B (8) ◽  
pp. 598-608 ◽  
Author(s):  
Gregory R. Handrigan ◽  
Joy M. Richman
Keyword(s):  
Tooth Crown ◽  
Crown Formation ◽  
Bicuspid Tooth

scholarly journals Isolated pliosaurid teeth from the Albian–Cenomanian (Cretaceous) of Annopol, Poland

2017 ◽  
Vol 67 (3) ◽  
pp. 393-403 ◽  
Author(s):  
Daniel Madzia ◽  
Marcin Machalski
Keyword(s):  
Cross Section ◽  
Late Cretaceous ◽  
Type Species ◽  
Late Jurassic ◽  
Morphological Variability ◽  
Original Material ◽  
Tooth Crown ◽  
Similar Morphology ◽  
Faunal Turnover ◽  
Early Late

AbstractBrachauchenine pliosaurids were a cosmopolitan clade of macropredatory plesiosaurs that are considered to represent the only pliosaurid lineage that survived the faunal turnover of marine amniotes during the Jurassic- Cretaceous transition. However, the European record of the Early to early Late Cretaceous brachauchenines is largely limited to isolated tooth crowns, most of which have been attributed to the classic Cretaceous taxon Polyptychodon. Nevertheless, the original material of P. interruptus, the type species of Polyptychodon, was recently reappraised and found undiagnostic. Here, we describe a collection of twelve pliosaurid teeth from the upper Albian-middle Cenomanian interval of the condensed, phosphorite-bearing Cretaceous succession at Annopol, Poland. Eleven of the studied tooth crowns, from the Albian and Cenomanian strata, fall within the range of the morphological variability observed in the original material of P. interruptus from the Cretaceous of England. One tooth crown from the middle Cenomanian is characterized by a gently subtrihedral cross-section. Similar morphology has so far been described only for pliosaurid teeth from the Late Jurassic and Early Cretaceous. Even though it remains impossible to precisely settle the taxonomic distinctions, the studied material is considered to be taxonomically heterogeneous.

Color of natural tooth crown in Japanese people

2000 ◽  
Vol 25 (1) ◽  
pp. 43-48 ◽  
Author(s):  
Akira Hasegawa ◽  
Akio Motonomi ◽  
Ikuo Ikeda ◽  
Satoshi Kawaguchi
Keyword(s):  
Tooth Crown ◽  
Japanese People ◽  
Natural Tooth

scholarly journals Three-dimensional tooth crown size symmetry in cleft lip and cleft palate

2014 ◽  
Vol 84 (4) ◽  
pp. 623-627 ◽  
Author(s):  
M. Okan Akcam ◽  
Halise Aydemir ◽  
Levent Özer ◽  
Berna Özel ◽  
T. Ufuk Toygar-Memikoğlu
Keyword(s):  
Cleft Palate ◽  
Cleft Lip ◽  
Three Dimensional ◽  
Tooth Crown ◽  
Crown Size

Tooth crown size in 46, X, i (Xq) human females

1991 ◽  
Vol 36 (6) ◽  
pp. 411-414 ◽  
Author(s):  
J.T. Mayhall ◽  
L. Alvesalo ◽  
G.C. Townsend
Keyword(s):  
Tooth Crown ◽  
Human Females ◽  
Crown Size
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