Titanosauriform teeth from the Cretaceous of Japan
An. acad. bras. ciênc
;
83(1): 247-265, Mar. 2011. ilus, tab
Article
in English
| LILACS
| ID: lil-578294
ABSTRACT
Sauropod teeth from six localities in Japan were reexamined. Basal titanosauriforms were present in Japan during the Early Cretaceous before Aptian, and there is the possibility that the Brachiosauridae may have been included. Basal titanosauriforms with peg-like teeth were present during the "mid" Cretaceous, while the Titanosauria with peg-like teeth was present during the middle of Late Cretaceous. Recent excavations of Cretaceous sauropods in Asia showed that multiple lineages of sauropods lived throughout the Cretaceous in Asia. Japanese fossil records of sauropods are conformable with this hypothesis.
RESUMO
Dentes de saurópodes de seis localidades no Japão foram re-examinados. Titanosauriformes basais estiveram presentes no Japão durante o Cretáceo Inferior antes do Aptiano, e existe a possibilidade de que os Brachiosauridae integrassem este grupo. Titanosauriformes basais com dentes similares a pregos estiveram presentes durante o Cretáceo Médio, enquanto Titanosauria com dentes similares a pregos estava presente durante meados do Cretáceo Superior. Escavações recentes de saurópodes do Cretáceo na Ásia mostraram que múltiplas linhagens de saurópodes viveram ao longo do Cretáceo na Ásia. Registros fósseis japoneses de saurópodes são concordantes com esta hipótese.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Tooth
/
Dinosaurs
/
Fossils
Limits:
Animals
Country/Region as subject:
Asia
Language:
English
Journal:
An. acad. bras. ciênc
Journal subject:
Science
Year:
2011
Type:
Article
/
Congress and conference
Affiliation country:
Japan
Institution/Affiliation country:
Museum of Nature and Human Activities/JP
/
National Museum of Nature and Science/JP
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