Misplaced Pages

This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (June 2022) (Learn how and when to remove this message)

Asterostemma depressa Temporal range: Middle Miocene ~16–12 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Cingulata
Family:	Chlamyphoridae
Subfamily:	†Glyptodontinae
Genus:	†Asterostemma Ameghino, 1889
Species:	†A. depressa
Binomial name
†Asterostemma depressa Ameghino, 1889

Asterostemma is an extinct genus of glyptodont. It lived during the Middle Miocene, and its fossilized remains were discovered in South America.

Description

Like all its close relatives, Asterostemma had a carapace made of fused osteoderms, protecting most of its body. The ornamentation of its osteoderms was similar to other basal genera of glyptodonts, such as Propalaehoplophorus, with clear and shallow furrows, and the central figures were rounded. Those were surrounded by a single row of peripheral figures. The caudal cuirass of Asterostemma was formed by rings and a caudal tube, forming a long and thin structure, similar to those of modern armadillos.

Classification

Asterostemma depressa was first described by Florentino Ameghino in 1889, based on fossil remains found in Middle Miocene terrains of Argentina. Other species attributed to this genus, such as A. acostae, A. gigantea, and A. venezolensis ; subsequent revisions of the fossil remains determined that the latter species belonged to a distinct genus of glyptodont, Boreostemma.

Bibliography

• F. Ameghino. 1889. Contribución al conocimiento de los mamíferos fósiles de la República Argentina . Actas de la Academia Nacional de Ciencias de la República Argentina en Córdoba 6:xxxii-1027
• A. A. Carlini, A. E. Zurita, G. J. Scillato-Yane, R. Sanchez, and O. A. Aguilera. 2008. New Glyptodont from the Codore Formation (Pliocene), Falcon State, Venezuela, its relationship with the Asterostemma problem, and the paleobiogeography of the Glyptodontinae. Palaontologische Zeitschrift 82(2):139-152

v t e Genera of armadillos and their extinct allies
Kingdom: Animalia Phylum: Chordata Class: Mammalia Superorder: Xenarthra
Cingulata Incertae sedis †Noatherium †Saltatherium †Peltephilidae Anantiosodon Epipeltephilus Parapeltecoelus Peltecoelus Peltephilus Ronwolffia †Pachyarmatheriidae Neoglyptatelus Pachyarmatherium †Pampatheriidae Holmesina Kraglievichia Machlydotherium? Pampatherium Plaina Scirrotherium Tonnicinctus Vassallia Yuruatherium Dasypodidae †Acantharodeia †Amblytatus †Archaeutatus †Barrancatatus †Chasicotatus †Chorobates †Coelutatus †Eocoleophorus †Epipeltecoelus †Eutatus †Hemiutaetus †Isutaetus †Lumbreratherium †Macrochorobates †Mazzoniphractus †Meteutatus †Prodasypus †Prostegotherium †Pucatherium †Punatherium †Stenotatus †Utaetus Dasypodinae †Stegotherium †Astegotheriini Astegotherium Nanoastegotherium Parastegosimpsonia Riostegotherium Stegosimpsonia Dasypodini †Anadasypus Dasypus †Pliodasypus †Propraopus Chlamyphoridae †Proeutatus Chlamyphorinae Calyptophractus †Chlamydophractus Chlamyphorus Euphractinae Chaetophractus †Doellotatus Euphractus †Macroeuphractus †Paleurphractus †Proeuphractus †Prozaedyus Zaedyus †Glyptodontinae Andinoglyptodon Asterostemma Boreostemma Castellanosia Clypeotherium Cochlops Comaphorus Coscinocercus Daedicuroides Doedicurus Eleutherocercus Eosclerocalyptus Eucinepeltus Glyptatelus Glyptodon Glyptodontidium Glyptostracon Glyptotherium Heteroglyptodon Hoplophorus Kelenkura Lomaphorus Metopotoxus Neosclerocalyptus Neothoracophorus Neuryurus Palaehoplophorus Palaeopeltis Panochthus Paraglyptodon Parapropalaehoplophorus Phlyctaenopyga Plaxhaplous Plohophorus Prodaedicurus Propalaehoplophorus Protoglyptodon Pseudoneothoracophorus Stromaphorus Stromatherium Trachycalyptus Urotherium Xiphuroides Tolypeutinae Cabassous †Kuntinaru †Pedrolypeutes Priodontes Tolypeutes †Vetelia

• Armadillos
• Prehistoric placental genera
• Prehistoric cingulates
• Miocene xenarthrans
• Miocene genus first appearances
• Miocene genus extinctions
• Miocene mammals of South America
• Neogene Argentina
• Fossils of Argentina
• Fossil taxa described in 1889
• Taxa named by Florentino Ameghino