Miocene rhinoceroses from the Texas Gulf Coastal Plain

1987 ◽  
Vol 61 (2) ◽  
pp. 388-423 ◽  
Author(s):  
Donald R. Prothero ◽  
Earl M. Manning
Keyword(s):  
New Species ◽  
North America ◽  
Coastal Plain ◽  
Middle Miocene ◽  
Early Miocene ◽  
High Plains ◽  
Gulf Coastal Plain ◽  
Local Fauna ◽  
Southeast Texas ◽  
A New Species

Four species of rhinoceros occur together in the Barstovian (middle Miocene) faunas of southeast Texas, a unique situation in the Miocene of North America. Two are assigned to normal contemporary High Plains species of Aphelops and Teleoceras, and two to dwarf species of Peraceras and Teleoceras. The dwarf Peraceras is a new species, P. hessei. The dwarf Teleoceras is assigned to Leidy's (1865) species “Rhinoceros” meridianus, previously referred to Aphelops. “Aphelops” profectus is here reassigned to Peraceras.The late Arikareean (early Miocene) Derrick Farm rhino, erroneously referred to “Caenopus premitis” by Wood and Wood (1937), is here referred to Menoceras arikarense. Menoceras barbouri is reported from the early Hemingfordian (early Miocene) Garvin Gully local fauna of southeast Texas. The rhinos from the early Clarendonian Lapara Creek Fauna are tentatively referred to Teleoceras cf. major.The three common genera of middle late Miocene rhinoceroses of North America (Aphelops, Peraceras, Teleoceras) are rediagnosed. Aphelops and Peraceras are more closely related to the Eurasian Aceratherium and Chilotherium (all four together forming the Aceratheriinae) than they are to the American Teleoceras. Contrary to Heissig (1973), Teleoceras is more closely related to the living rhinoceroses and their kin (together forming the Rhinocerotini) than it is to the Aceratheriinae.

scholarly journals A late-surviving apatemyid (Mammalia: Apatotheria) from the latest Oligocene of Florida, USA

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1509 ◽  
Author(s):  
Nicholas J. Czaplewski ◽  
Gary S. Morgan
Keyword(s):  
New Species ◽  
North America ◽  
Coastal Plain ◽  
Eastern North America ◽  
Gulf Coastal Plain ◽  
Early Oligocene ◽  
Alachua County ◽  
The Family ◽  
Distal Edge ◽  
A New Species

A new species of Apatemyidae,Sinclairella simplicidens, is based on four isolated teeth that were screenwashed from fissure fillings at the late Oligocene Buda locality, Alachua County, Florida. Compared to its only congenerSinclairella dakotensis, the new species is characterized by upper molars with more simplified crowns, with the near absence of labial shelves and stylar cusps except for a strong parastyle on M1, loss of paracrista and paraconule on M2 (paraconule retained but weak on M1), lack of anterior cingulum on M1–M3, straighter centrocristae, smaller hypocone on M1 and M2, larger hypocone on M3, distal edge of M2 continuous from hypocone to postmetacrista supporting a large posterior basin, and with different tooth proportions in which M2 is the smallest rather than the largest molar in the toothrow. The relatively rare and poorly-known family Apatemyidae has a long temporal range in North America from the late Paleocene (early Tiffanian) to early Oligocene (early Arikareean). The new species from Florida significantly extends this temporal range by roughly 5 Ma to the end of the Paleogene near the Oligocene-Miocene boundary (from early Arikareean, Ar1, to late Arikareean, Ar3), and greatly extends the geographic range of the family into eastern North America some 10° of latitude farther south and 20° of longitude farther east (about 2,200 km farther southeast) than previously known. This late occurrence probably represents a retreat of this subtropically adapted family into the Gulf Coastal Plain subtropical province at the end of the Paleogene and perhaps the end of the apatemyid lineage in North America.

scholarly journals A new species of Plesiosorex (Mammalia, Eulipotyphla) from the Early Miocene of Japan: first record of the genus from East Asia

2017 ◽  
Vol 73 (3-4) ◽  
pp. 292-299
Author(s):  
Mitsuharu Oshima ◽  
Yukimitsu Tomida ◽  
Takamichi Orihara
Keyword(s):  
New Species ◽  
North America ◽  
East Asia ◽  
Middle Miocene ◽  
Cladistic Analysis ◽  
First Record ◽  
Early Miocene ◽  
Central Japan ◽  
European Species ◽  
A New Species

Abstract A nearly complete dentary with preserved i2, p3 and m1 of a relatively large soricomorph from the Dota locality, Kani Basin, Early Miocene (ca. 18.5 Ma), Nakamura Formation of the Mizunami Group in central Japan, is described as a new species of Plesiosorex. It represents the first record of the genus in East Asia. Plesiosorex fejfari sp. nov. has a slender dentary, posteriorly elongated angular and condyloid processes, p3 with two roots, and m1 without hypoconulid or cingulid. Cladistic analysis of Butselia gracilis and seven species of Plesiosorex shows that Butselia is basally positioned with respect to Plesiosorex, and it seems likely that Plesiosorex originated in Europe at the beginning of the Miocene and expanded its distribution to East Asia and North America during the Early Miocene. Two Middle Miocene North American species are more closely related to each other than to European species of the same age.

Late Santonian megaspore floras from the Gulf Coastal Plain (Georgia, USA)

2011 ◽  
Vol 85 (1) ◽  
pp. 1-21 ◽  
Author(s):  
Richard Lupia
Keyword(s):  
New Species ◽  
North America ◽  
Late Cretaceous ◽  
Coastal Plain ◽  
Eastern North America ◽  
Gulf Coastal Plain ◽  
Two New Species ◽  
Western Interior Basin ◽  
Heterosporous Ferns

Fossil megaspore floras from the Late Cretaceous of North America have been studied extensively, but primarily from the Western Interior Basin. Two new megaspore floras are described from eastern North America along the Gulf Coastal Plain. Cumulatively, 10 genera and 16 species of megaspores are recognized from Allon, Georgia and along Upatoi Creek, Georgia (both late Santonian in age, ~84 Ma). Megaspores identified have affinities to both heterosporous lycopsids, e.g., Erlansonisporites, Minerisporites, and Paxillitriletes, and to heterosporous ferns, e.g., Ariadnaesporites, and Molaspora. Lycopsid megaspores are more diverse than fern megaspores in the Allon and the Upatoi Creek floras. Two new species—Erlansonisporites confundus n. sp. and Erlansonisporites potens n. sp.—are proposed.

New marsupial from the early Eocene of Virginia

2010 ◽  
Vol 84 (3) ◽  
pp. 561-565 ◽  
Author(s):  
Kenneth D. Rose
Keyword(s):  
New Species ◽  
North America ◽  
Coastal Plain ◽  
Atlantic Coastal Plain ◽  
Early Eocene ◽  
European Species ◽  
Atlantic Coastal ◽  
A New Species

A new species of the marsupial Peradectes is described from the early Eocene Nanjemoy Formation of Virginia. It is the first Tertiary marsupial known from the Atlantic Coastal Plain north of Florida. The smallest species of Peradectes, it is more closely related to species known from the Western Interior of North America than to contemporaneous European species.

The first mastotermitid termite from Africa (Isoptera: Mastotermitidae): a new species ofMastotermesfrom the early Miocene of Ethiopia

2015 ◽  
Vol 89 (6) ◽  
pp. 1038-1042 ◽  
Author(s):  
Michael S. Engel ◽  
Ellen D. Currano ◽  
Bonnie F. Jacobs
Keyword(s):  
New Species ◽  
North America ◽  
Early Miocene ◽  
Amhara Region ◽  
Central Ethiopia ◽  
A New Species

AbstractThe first mastotermitid termite from Africa is described and figured from wing fragments recovered from the early Miocene (22–21 Ma) deposits of the Mush Valley, Amhara Region, central Ethiopia.Mastotermes aethiopicusnew species is the second fossil termite recorded from Africa and expands the known paleo-distribution of the genus from tropical North America and Europe into northeastern Africa during the Miocene.Mastotermes aethiopicusis distinguished from the livingM.darwiniensisFroggatt and other Neogene species of the genus, and comments are provided regarding the occurrence of this genus in the tropical fauna of Miocene Ethiopia.

A new and most complete pampathere (Mammalia, Xenarthra, Cingulata) from the Quaternary of Bahia, Brazil

Zootaxa ◽  
2019 ◽  
Vol 4661 (3) ◽  
pp. 401-444 ◽  
Author(s):  
JORGE FELIPE MOURA ◽  
FLÁVIO GÓIS ◽  
FERNANDO CARLOS GALLIARI ◽  
MARCELO ADORNA FERNANDES
Keyword(s):  
New Species ◽  
North America ◽  
South America ◽  
Axial Length ◽  
Vertebral Column ◽  
Middle Miocene ◽  
The Other ◽  
South American ◽  
Great American Biotic Interchange ◽  
A New Species

Pampatheriidae is a group of South American native cingulates recorded from the Middle Miocene to the Early Holocene. These animals arrived in North America during the Great American Biotic Interchange. During the Quaternary, at least three genera existed: Tonnicinctus Góis, González Ruiz, Scillato-Yané and Soibelzon, Pampatherium Gervais and Ameghino, and Holmesina Simpson. They are differentiated mainly by craniodental and osteodermal characters. In this paper, we describe a new species of Holmesina from Bahia state, Brazil. Two well-preserved specimens possessing osteoderms associated with their skeletons enabled us to determine the genus and species more reliably. Holmesina cryptae sp. nov. differs from the other Quaternary pampatheres by having the simplest ornamental pattern of osteoderms, sharing characteristics between Pampatherium and Holmesina osteoderms and the most robust skull among the Holmesina species, however preserving the main synapomorphies of the genus. Moreover, the integrity of the remains of H. cryptae sp. nov. enabled us to describe elements of the hyoid apparatus, the clavicle, the entire vertebral column and the pelvis. It was also possible to measure its total axial length (2.2 m) more reliably, which is smaller than previously estimated for other pampatheres. Holmesina cryptae sp. nov. constitutes the sixth species of the genus, and it is the fourth in South America. 

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