A new carnivorous cynodont (Synapsida, Therapsida) from the Brazilian Middle Triassic (Santa Maria Formation): Candelariodon barberenai gen. et sp. nov.
Author
Oliveira, Téo Veiga De
Author
Schultz, Cesar Leandro
Author
Soares, Marina Bento
Author
Rodrigues, Carlos Nunes
text
Zootaxa
2011
3027
19
28
journal article
10.5281/zenodo.278705
abd0f439-e330-47a4-9cd4-0a851db163fa
1175-5326
278705
Genus
Candelariodon
gen. nov.
Type
species
.
Candelariodon barberenai
sp. nov.
Etymology.
Named after the city of
Candelária
, where the
holotype
was collected; “odon” derives from the Greek “
odoús
”, meaning “tooth”.
Distribution and Age.
Lower half of the Santa Maria Formation (Santa Maria
1
Sequence from Santa Maria Supersequence), in the characteristic levels of the
Dinodontosaurus
AZ (
sensu
Abdala & Ribeiro
2010
) (
Fig.
3
), probably Ladinian in age. The outcrop where the fossil was collected is in Mr. Ronaldo Becker’s property, in the Pinheiro region, municipality of
Candelária
, circa
200km
west from Porto Alegre, Rio Grande do Sul,
Brazil
(
Fig.
1
B).
Generic diagnosis.
The genus include eucynodont with the following combination of characters: dentary without angular process; large coronoid process of the dentary overlapping laterally to the most distal postcanines; wide masseteric fossa; fused mandibular symphysis; splenial present but reduced (not vestigial); large distal lower incisor taller than postcanines; incisor margins without any kind of serration or denticulation; lower canine large or very large (broken at base); alveoli for eight postcanines (pc); pc
1
and
2
apparently with
2
cusps, a (main) and c (distal accessory); pc
3
and
4
buccolingually expanded with
3
cusps, a, c, and d (lingual accessory); pc
4
with two small mesiolingual cingular cusps; pc
5
buccolingually expanded, with cusps organized in buccal and lingual rows separated by shallow occlusal basin, each with four low cusps; maxillary postcanine sectorial, with four mesiodistally aligned cusps (B, A, C, and D) and two small mesiobuccal cingular cusps. See below for complete description.