Black Spiny-necked Swamp Turtle

黑棘颈龟（Acanthochelys spixii）是一种中小型侧颈龟，隶属于蛇颈龟科棘颈龟属。其背甲扁平，颈部具有显著的刺状突起，因Spix命名而得名。

Lineage: Turtles and Tortoises (TESTUDINES) > Side-necked Turtles (PLEURODIRA) > Austro-American Side-necked Turtles Superfamily (CHELOIDEA) > Austro-American Side-necked Turtles (CHELIDAE) > South American Side-necked Turtles Subfamily (CHELINAE) > South American Swamp Turtles (Acanthochelys) > Black Spiny-necked Swamp Turtle (Acanthochelys spixii). This path helps place the taxon within its family, genus, or species-level context.