Lomaphorus

Last updated

Lomaphorus
Temporal range: Late Pleistocene (Lujanian)
~0.1  Ma
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LomaphorusImperfectus.png
Lomaphorus imperfectus caudal tube
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Cingulata
Family: Chlamyphoridae
Subfamily: Glyptodontinae
Genus: Lomaphorus
Ameghino, 1889
Type species
Hoplophorus imperfectus
Gervais and Ameghino, 1880
Other Species [1]
  • L. chapalmalensis Ameghino, 1908
  • L. cingulatus Ameghino, 1889
  • L. compressus Ameghino, 1882
  • L. elegans (Burmeister, 1871)
  • L. elevatus (Nodot, 1857)
Synonyms
Synonyms of L. imperfectus
  • Hoplophorus imperfectusGervais and Ameghino, 1880
Synonyms of L. elegans
  • Hoplophorus elegansBurmeister, 1871
Synonyms of L. elevatus
  • Glyptodon elevatusNodot, 1857

Lomaphorus is a possibly dubious extinct genus of glyptodont that lived during the Pleistocene in eastern Argentina. [2] Although many species have been referred, the genus itself is possibly dubious or synonymous with other glyptodonts like Neoslerocalyptus from the same region. [3] [2] [1]

Contents

Etymology

The genus name Lomaphorus is derived from the Greek roots loma- meaning "fringe" and -phorus meaning "bearing" after the striated anatomy of the dermal armor of L. imperfectus. [4] [5] In 1935, a Trematode was named Lomaphorus unwittingly, but it has since been moved to a new genus name, Lomasoma. [6]

Taxonomy

The first fossils referred to Lomaphorus were described as early as 1857 with the description of Glyptodon elevatus based on dorsal carapace osteoderms recovered from Pleistocene deposits in Argentina, but majority of the fossils were described by Argentine paleontologist Florentino Ameghino during the late 19th century. [7] [5] Several more species were referred to the genus that later were synonymized with more complete species or their own genera, Ameghino even admitting that many of his species were diagnosed based on very fine details that could be individual variation. [5] [8] Many species have been named as or referred to Lomaphorus, but most of these referrals or descriptions were erroneously based on taphonomic characteristics of fossilized osteoderms instead of genuine diagnostic features. [1] [2] Few species have received detailed descriptions either, further complicating the situation. [8] [9] [1]

Species

Type:

Species referred to Lomaphorus according to Zurita et al (2016): [1]

Other species referred to Lomaphorus:

Description

Due to problems with the diagnostics of Lomaphorus and its problems with its internal taxonomy, many of the diagnostic traits for the taxon are uncertain. Lomaphorus, like most of the glyptodons, was large at 2.5 meters long but not as large as its relative Hoplophorus. [5] Lomaphorus possessed a powerful carapace that covered a large part of the body, formed by osteoderms melted together. The carapace was relatively low and long, but not as much as that of the Neosclerocalyptus . The dorsal plates brought a central figure of medium size, surrounded by a peripheral area of radial ornamentation. The tail was protected thanks to a series of bone rings and a terminal bone tube; The latter still retained a narrow peripheral band, and was equipped with large side osteoderms. At the end of the tube there were two great convex osteoderms.

Related Research Articles

<span class="mw-page-title-main">Cingulata</span> Order of armored mammals from the Americas

Cingulata, part of the superorder Xenarthra, is an order of armored New World placental mammals. Dasypodids and chlamyphorids, the armadillos, are the only surviving families in the order. Two groups of cingulates much larger than extant armadillos existed until recently: pampatheriids, which reached weights of up to 200 kg (440 lb) and chlamyphorid glyptodonts, which attained masses of 2,000 kg (4,400 lb) or more.

<i>Doedicurus</i> An extinct genus of mammals belonging to the armadillo order, Cingulata

Doedicurus is an extinct genus of glyptodont from South America containing one species, D. clavicaudatus. Glyptodonts are a member of the family Chlamyphoridae, which also includes some modern armadillo species, and they are classified in the superorder Xenarthra alongside sloths and anteaters. Being a glyptodont, it was a rotund animal with heavy armor and a carapace. Averaging at an approximate 1,400 kg (3,100 lb), it was one of the largest glyptodonts to have ever lived. Though glyptodonts were quadrupeds, large ones like Doedicurus may have been able to stand on two legs like other xenarthrans. It notably sported a spiked tail club, which may have weighed 40 or 65 kg in life, and it may have swung this in defense against predators or in fights with other Doedicurus at speeds of perhaps 11 m/s.

<i>Glyptotherium</i> An extinct genus of mammals belonging to the armadillo order of xenarthrans

Glyptotherium is a genus of glyptodont in the family Chlamyphoridae that lived from the Early Pliocene, about 3.6 million years ago, to the Late Pleistocene, around 15,000 years ago. It had a wide distribution, living in the United States, Mexico, Guatemala, Costa Rica, Honduras, El Salvador, Panama, Venezuela, and Brazil. The genus was first described in 1903 by American paleontologist Henry Fairfield Osborn with the type species being, G. texanum, based on fossils that had been found in the Pliocene Blancan Beds in Llano Estacado, Texas, USA. Glyptotherium fossils have since been unearthed from many more fossil sites, from Florida to Colombia. Another species, G. cylindricum, was named in 1912 by fossil hunter Barnum Brown on the basis of a partial skeleton that had been unearthed from the Pleistocene deposits in Jalisco, Mexico. The two species differ in several aspects, including age, with G. texanum being from the older Early Pliocene to Early Pleistocene strata, whereas G. cylindricum is exclusive to the Late Pleistocene.

<i>Hoplophorus</i> An extinct genus of mammals belonging to the armadillo order of xenarthrans

Hoplophorus is an extinct genus of glyptodont, a subfamily of armadillos. The only confidently known species was H. euphractus, found in Pleistocene deposits in Brazil, though fossils possibly from another species are known from Bolivia.

<i>Glyptodon</i> Genus of large, heavily armored mammals

Glyptodon is a genus of glyptodont, an extinct group of large, herbivorous armadillos, that lived from the Pliocene, around 3.2 million years ago, to the early Holocene, around 11,000 years ago, in Brazil, Uruguay, Paraguay, Bolivia, Peru, Argentina, and Colombia. It is one of, if not the, best known genus of glyptodont. Glyptodon has a long and storied past, being the first named extinct cingulate and the type genus of the subfamily Glyptodontinae. Fossils of Glyptodon have been recorded as early as 1814 from Pleistocene aged deposits from Uruguay, though many were incorrectly referred to the ground sloth Megatherium by early paleontologists.

<i>Scelidodon</i> Extinct genus of ground sloths

Scelidodon is an extinct genus of South American ground sloths. Its remains have been found in the Yupoí and Uspara Formations of Argentina, the Ulloma, Umala, Ñuapua and Tarija Formations of Bolivia, in Brazil, in Chile and in Peru. The youngest fossils have been dated to as recently as 9000 B.P.

<i>Propalaehoplophorus</i> Extinct genus of mammals

Propalaehoplophorus, also written as Propalaeohoplophorus, is an extinct genus of glyptodont, which lived in South America during the Early Miocene epoch.

<i>Stegotherium</i> Extinct genus of mammals in the armadillo order of xenarthrans

Stegotherium is an extinct genus of long-nosed armadillo, belonging to the Dasypodidae family alongside the nine-banded armadillo. It is currently the only genus recognized as a member of the tribe Stegotheriini. It lived during the Early Miocene of Patagonia and was found in Colhuehuapian rocks from the Sarmiento Formation, Santacrucian rocks from the Santa Cruz Formation, and potentially also in Colloncuran rocks from the Middle Miocene Collón Curá Formation. Its strange, almost toothless and elongated skull indicates a specialization for myrmecophagy, the eating of ants, unique among the order Cingulata, which includes pampatheres, glyptodonts and all the extant species of armadillos.

<i>Neosclerocalyptus</i> Extinct genus of mammals

Neosclerocalyptus was an extinct genus of glyptodont that lived during the Pliocene, Pleistocene, and Holocene of Southern South America, mostly Argentina. It was small compared to many Glyptodonts at only around 2 meters long and 360 kilograms.

<i>Boreostemma</i> Extinct genus of mammals

Boreostemma is an extinct genus of glyptodonts from northern South America. Fossils assigned to the genus were first described as belonging to Asterostemma from southern South America, but have been placed in the new genus Boreostemma by Carlini et al. in 2008. The type species is B. pliocena. Fossils of Boreostemma have been found in the Honda Group of Colombia, in Peru and Venezuela.

Kelenkura is an extinct genus of heavily armored mammals belonging to the subfamily Glyptodontinae, from the family Chlamyphoridae that contain most of the modern armadillos. It was a medium-sized South American animal, distantly related to Doedicurus. Fossils of this genus were recovered in the Arroyo Chasicó Formation and in the Loma de Las Tapias Formation of Argentina in rocks dating back to the Late Miocene epoch.

Proeuphractus is an extinct genus of xenarthran, related to the modern armadillos. It lived from the Early to the Late Miocene, and its fossilized remains were discovered in South America.

Palaehoplophorus is an extinct genus of glyptodont. It lived from the Middle to the Late Miocene, and its fossilized remains were discovered in South America.

Urotherium is an extinct genus of Glyptodont. It lived from the Late Miocene to the Late Pliocene, and its fossilized remains were found in South America.

Plohophorus is an extinct genus of glyptodont. it lived from the Late Miocene to the Late Pliocene, and its fossilized remains were discovered in South America.

Neuryurus is an extinct genus of glyptodont. It lived from the Late Pliocene to the Early Holocene, and its fossilized remains were discovered in South America.

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

Stromaphorus is an extinct genus of Glyptodont. It lived during the Late Miocene, and its fossilized remains were discovered in South America.

Comaphorus is a dubious extinct genus of glyptodont. It lived during the Late Miocene in Argentina, but only one fossil has ever been referred to the animal.

Dasypus neogaeus is an extinct species of armadillo, belonging to the genus Dasypus, alongside the modern nine-banded armadillo. The only known fossil is a single osteoderm, though it has been lost, that was found in the Late Miocene strata of Argentina.

References

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