Morley Read / Mouse opossum (Marmosa sp.) on the branch of a rainforest shrub at night, Pastaza Province, Ecuadorian Amazon. (non-ex)

Claudio Contreras / Grayish Mouse Opossum (Tlacuatzin canescens), Maria Magdalena Island, Islas Marias Biosphere Reserve, Sea of Cortez (Gulf of California), Mexico, June.

Bert Willaert / Pair of mating Mouse Opossums (Marmosops cf. noctivagus) hanging from prehensile tail. Ecuador,

Lucas Bustamante / Juvenile Mouse opossum (Marmosops impavidus) feeding on moth, Pinas, El Oro, Ecuador.

Lucas Bustamante / Mouse opossum (Marmosops impavidus) on branch, Pinas, El Oro, Ecuador.

Lucas Bustamante / Juvenile Andean mouse opossum (Marmosops impavidus) eating a moth, El Oro, Ecuador.

Paul Bertner / Mouse Opossum (Marmosa sp), Yasuni National Park, Ecuador

Melvin Grey / Murine Opossum (Marmosa murina) adult, Mindo area, Ecuador

Sean Crane / Elegant Fat-tailed Mouse Opossum (Thylamys elegans), Pampas, Bolivia

Piotr Naskrecki / Emilia's Gracile Mouse Opossum (Gracilinanus emiliae), Suriname

Piotr Naskrecki / Emilia's Gracile Mouse Opossum (Gracilinanus emiliae), Suriname

Piotr Naskrecki / Emilia's Gracile Mouse Opossum (Gracilinanus emiliae), Suriname