Exaeretodon is an extinct genus of fairly large, low-slung traversodontid cynodonts from the southern parts of Pangea. Four species are known, from various formations. E. argentinus is from the Carnian-age (Late Triassic) Cancha de Bochas Member of the Ischigualasto Formation in the Ischigualasto-Villa Unión Basin in northwestern Argentina.

橫齒獸科 （學名：Traversodontidae）是已滅絕 合弓綱 的一科，屬於 獸孔目 犬齒獸亞目 的 犬頜獸類。 在1936年，Friedrich von Huene將發現於 巴西 的物種建立為橫齒獸科。 橫齒獸科是群 草食性 動物，大型 犬齒 後方的牙齒高度特化、寬度變寬，適合咀嚼 植物。 犬齒後方的牙齒緊密排列，齒冠互相接觸，牙齒寬度大於長度，有數個齒尖。 由於犬齒後方的牙齒有許多特徵，常用來鑑定橫齒獸科。 橫齒獸科的頭顱骨短，口鼻部的前端寬於中段。 牙齒位於上下頜的內側深處，顯 …

2025年1月24日 · Our findings reveal anatomical similarities to the gomphodontosuchines Exaeretodon argentinus and Santagnathus mariensis. The postcranial anatomy suggests an animal with abducted forelimbs, adapted for more horizontal movements but …

Here we describe the cranial ontogeny of the traversodontid Exaeretodon argentinus, a taxon known from many specimens from the Ischigualasto Formation of Argentina, and one of the largest bodied South American traversodontids (Filippini, Abdala & Cassini, 2022).

Exaeretodon is an extinct genus of fairly large, low-slung traversodontid cynodonts from the southern parts of Pangea. Four species are known, from various formations. E. argentinus is from the Carnian-age Cancha de Bochas Member of the Ischigualasto Formation in the Ischigualasto-Villa Unión Basin in northwestern Argentina.

Exaeretodon is a large South American traversodontid, reaching a body length of up to two meters, typically represented in the Carnian of Argentina and Brazil (Abdala et al., 2002). In this contribution, we describe the enamel microstructure of two species of South American traversodontids: Exaeretodon frenguellii Cabrera, 1954 from

冕齿兽的演化位置有两种版本，一个是 Probainognathus 、 Exaeretodon 、 三瘤齿兽科 、 摩尔根兽 、 哺乳动物 所属 演化支 的姊妹 分类单元 ；另一个则是将冕齿兽、 Exaeretodon 、三瘤齿兽科归类于 犬颌兽类 演化支，但不包含 Probainognathus 、摩尔根兽、哺乳动物。

Large differences in the size range of the Exaeretodon growth series (14.9 49.6 cm) may suggest that juveniles and adults experienced different trophic interactions, in the form of a dietary shift through growth (see Mittelbach, Osenberg & Leibold, 1988; Schiesari, Werner

Dental microwear of four postcanine teeth of Exaeretodon argentinus was analyzed using both two dimensional (2D) and three dimensional (3D) methods to infer their masticatory jaw movements.

Exaeretodon is at the heart of a controversy as to which eucynodonts are the closest extinct relatives of mammals. One group argues that even though Exaeretodon shows many seemingly unique resemblances with mammals, it lies out on a distant side branch with other extinct herbivorous eucynodonts.