scholarly journals The new Early Miocene bat records from the Molasse sites of South Germany

2017 ◽  
Vol 73 (3-4) ◽  
pp. 227-235
Author(s):  
Valentina V. Rosina ◽  
Michael Rummel
Keyword(s):  
Fossil Record ◽  
Early Miocene ◽  
Upper Freshwater Molasse ◽  
Fossil Form ◽  
Vespertilionid Bats

Abstract Fossil bats are described from deposits of the Upper Freshwater Molasse of the Forsthart and Rembach sites in East Bavaria of South Germany (MN 4). The material comprises 13 fragments, representing at least six different species, all belonging to Vespertilionidae. A fossil form from Rembach, close to the Oriental clade of Hesperoptenus, represents the first and oldest fossil record of this clade in Europe. The assignment of bat records to extant Oriental clades Hesperoptenus and Submyotodon in Rembach, as well as different forms of Miostrellus in Forsthart indicate considerable diversity in Early Miocene vespertilionid bats, and have exciting palaeobiogeographic implications. Fossils are discussed in regards to taxonomic, stratigraphic and palaeoecological significance.

scholarly journals Diversity of the Crinocheta (Crustacea, Isopoda, Oniscidea) from Early Miocene Chiapas amber, Mexico

2018 ◽  
Vol 35 (3) ◽  
pp. 203-214 ◽  
Author(s):  
Pierre Broly ◽  
María De Lourdes Serrano-Sánchez ◽  
Francisco J. Vega
Keyword(s):  
New Species ◽  
Brackish Water ◽  
Fossil Record ◽  
Early Miocene ◽  
Paleoenvironmental Reconstruction ◽  
New Genera ◽  
Terrestrial Isopods ◽  
Water Influence ◽  
The Family

Currently, the Onisicdea (terrestrial isopods) is a massive Crustacea suborder of more than 3 700 species, but our knowledge of their paleodiversity is poor. In this paper, we present ten fossils of Crinocheta, the largest clade within the Onisicdea, discovered in Early Miocene (23 Ma) amber of Chiapas. We described three new genera and six new species including Palaeolibrinus spinicornis gen. nov. sp. nov., Armadilloniscus miocaenicus sp. nov., Archeostenoniscus robustus gen. nov. sp. nov., Archeostenoniscus mexicanus sp. nov., Palaeospherarmadillo mazanticus gen. nov. sp. nov., and Palaeospherarmadillo rotundus sp. nov. This study represents the first fossil record of the family Detonidae, Olibrinidae, and “Stenoniscidae”. From a paleoenvironmental reconstruction perspective, the oniscidean fauna presented here supports a particularly wet paleoenvironment, under brackish water influence, similar to an estuary.

scholarly journals A ceraphronid wasp in Early Miocene amber from the Dominican Republic (Hymenoptera: Ceraphronidae)

2013 ◽  
pp. 1
Author(s):  
Michael S. Engel
Keyword(s):  
New Species ◽  
Dominican Republic ◽  
Fossil Record ◽  
Parasitoid Wasp ◽  
Early Miocene

The first fossil of the parasitoid wasp family Ceraphronidae (Ceraphronoidea) is described and figured.  Ceraphron ceuthonymus Engel, new species, is described from Early Miocene (Burdigalian) amber from the Dominican Republic and distinguished from its close congeners.  A brief summary of the fossil record of Ceraphronoidea is provided.

Climbing since the early Miocene: The fossil record of Paullinieae (Sapindaceae) (project)

10.7934/p3910 ◽  
2021 ◽  
Author(s):  
N Jud ◽  
S Allen ◽  
C Nelson ◽  
C Bastos ◽  
J Chery
Keyword(s):  
Fossil Record ◽  
Early Miocene

The southernmost fossil record of Squamates

2017 ◽  
Vol 38 (1) ◽  
pp. 15-30 ◽  
Author(s):  
Adriana Albino ◽  
Santiago Brizuela ◽  
Sergio Vizcaíno
Keyword(s):  
South America ◽  
Fossil Record ◽  
Early Miocene ◽  
Substantial Part ◽  
South American ◽  
Santa Cruz ◽  
Origin And Evolution ◽  
Present Distribution ◽  
First Time

Squamates form a substantial part of the present-day South American herpetofauna, and their fossils constitute an indispensable evidence for understanding the origin and evolution of the main taxa. Squamates are relatively common in Miocene localities of Patagonia, especially in levels of the late early Miocene Santa Cruz Formation. In this contribution, remains of the three species of the extinct iguanidErichosaurusAmeghino 1899 (E. diminutus,E. bombimaxillaandE. debilis) are redescribed, and new squamate specimens are reported for first time. The genusErichosaurusis considered invalid.Erichosaurus debilis,E. diminutusand a new specimen are recognized as indeterminate species of the extant polichrotinePristidactylus, whereasE. bombimaxillaremains as an indeterminate iguanid. Snakes are represented by an indeterminate colubrid. All these specimens, together with a tupinambine teiid previously described for the same formation, represent the southernmost fossil record of squamates in South America and indicate the occurrence of the iguanidPristidactylus, the teiidTupinambisand the colubrid snakes south to their present distribution as back as during the early Miocene.

scholarly journals The wasp genus Clystopsenella in Early Miocene amber from the Dominican Republic (Hymenoptera: Scolebythidae)

2015 ◽  
pp. 1 ◽  
Author(s):  
Michael S. Engel
Keyword(s):  
New Species ◽  
Dominican Republic ◽  
Fossil Record ◽  
Early Miocene ◽  
Evolutionary Patterns ◽  
Extant Genus ◽  
The Family ◽  
Color Differences ◽  
A New Species

A new species of scolebythine wasp (Chrysidoidea: Scolebythidae) is described and figured from a female beautifully preserved in Early Miocene amber from the Dominican Republic.  The specimen is the first fossil record of the extant genus <em>Clystopsenella</em> Kieffer, and is quite similar to the extant <em>Clystopsenella longiventris</em> Kieffer, a species that occurs widely from Brazil to Belize.  <strong><em>Clystopsenella mirabilis</em></strong> Engel, new species, is distinguished from <em>C. longiventris</em> on the basis of size; head, pronotal, and pterostigmal shape; and putative color differences.  The living and fossil diversity of the family is summarized and evolutionary patterns within the clade are discussed.

scholarly journals Deep time diversity of metatherian mammals: implications for evolutionary history and fossil-record quality

Paleobiology ◽  
2018 ◽  
Vol 44 (2) ◽  
pp. 171-198 ◽  
Author(s):  
C. Verity Bennett ◽  
Paul Upchurch ◽  
Francisco J. Goin ◽  
Anjali Goswami
Keyword(s):  
Fossil Record ◽  
Late Eocene ◽  
Didelphis Virginiana ◽  
Early Miocene ◽  
South American ◽  
Data Set ◽  
Deep Time ◽  
The North ◽  
Time Diversity ◽  
Diversity Estimates

AbstractDespite a global fossil record, Metatheria are now largely restricted to Australasia and South America. Most metatherian paleodiversity studies to date are limited to particular subclades, time intervals, and/or regions, and few consider uneven sampling. Here, we present a comprehensive new data set on metatherian fossil occurrences (Barremian to end Pliocene). These data are analyzed using standard rarefaction and shareholder quorum subsampling (including a new protocol for handling Lagerstätte-like localities).Global metatherian diversity was lowest during the Cretaceous, and increased sharply in the Paleocene, when the South American record begins. Global and South American diversity rose in the early Eocene then fell in the late Eocene, in contrast to the North American pattern. In the Oligocene, diversity declined in the Americas, but this was more than offset by Oligocene radiations in Australia. Diversity continued to decrease in Laurasia, with final representatives in North America (excluding the later entry ofDidelphis virginiana) and Europe in the early Miocene, and Asia in the middle Miocene. Global metatherian diversity appears to have peaked in the early Miocene, especially in Australia. Following a trough in the late Miocene, the Pliocene saw another increase in global diversity. By this time, metatherian biogeographic distribution had essentially contracted to that of today.Comparison of the raw and sampling-corrected diversity estimates, coupled with evaluation of “coverage” and number of prolific sites, demonstrates that the metatherian fossil record is spatially and temporally extremely patchy. Therefore, assessments of macroevolutionary patterns based on the raw fossil record (as in most previous studies) are inadvisable.

Taxonomic status of some species of Aspidostomatidae (Bryozoa, Cheilostomata) from the Oligocene and Miocene of Patagonia (Argentina)

2018 ◽  
Vol 92 (3) ◽  
pp. 432-441 ◽  
Author(s):  
Leandro M. Pérez ◽  
Juan López-Gappa ◽  
Miguel Griffin
Keyword(s):  
New Species ◽  
Fossil Record ◽  
Type Species ◽  
Middle Miocene ◽  
Taxonomic Status ◽  
Early Miocene ◽  
New Combination ◽  
Late Oligocene ◽  
Santa Cruz ◽  
New Material

AbstractThe bryozoan genus Aspidostoma Hincks, 1881 has been regarded as the only representative of the Aspidostomatidae Jullien, 1888 in Argentina to date. Its type species, Aspidostoma giganteum (Busk, 1854), is presently distributed in the Magellanic Region (Argentina and Chile) and has been recorded in Oligocene and Miocene fossil deposits of Santa Cruz and Chubut, respectively. New material from San Julián (late Oligocene), Monte León (early Miocene), Chenque (early to middle Miocene), and Puerto Madryn (late Miocene) formations suggests, however, that A. giganteum is not represented in the fossil record. Material from Puerto Madryn Formation previously regarded as A. giganteum is here recognized as Aspidostoma roveretoi new species. Aspidostoma ortmanni Canu, 1904 is revalidated for the species from the San Julián Formation. Aspidostoma armatum new species and Aspidostoma tehuelche new species are introduced for material from the Monte León and Chenque formations, respectively. Aspidostoma incrustans Canu, 1908, from the early Miocene, is redescribed. Melychocella Gordon and Taylor, 1999, which differs from Aspidostoma in having vicarious avicularia and lacking a median ridge and a quadrangular process proximal to the opesia-orifice, is so far represented by three Paleogene species from the Chatham Islands (Southwest Pacific). The material from Monte León allowed us to transfer Aspidostoma flammulum Canu, 1908 to Melychocella, resulting in the new combination Melychocella flammula (Canu, 1908). Melychocella biperforata new species is described from the lower Miocene Monte León and Chenque formations. The presence of Melychocella in the Neogene of Patagonia extends its geographic distribution and its temporal range.UUID: http://zoobank.org/d84df2d8-cab2-4e74-82b8-7c67d938a58f

scholarly journals The first fossil parrot (Aves, Psittaciformes) from Siberia and its implications for the historical biogeography of Psittaciformes

2016 ◽  
Vol 12 (10) ◽  
pp. 20160717 ◽  
Author(s):  
Nikita V. Zelenkov
Keyword(s):  
Pacific Ocean ◽  
Geographical Distribution ◽  
Fossil Record ◽  
Historical Biogeography ◽  
Early Miocene ◽  
Baikal Lake ◽  
The Past ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Climatic Optimum

Modern parrots (crown Psittaciformes) are a species-rich group of mostly tropical and subtropical birds with a very limited fossil record. A partial tarsometatarsus from the late Early Miocene of Siberia (Baikal Lake) is the first pre-Quaternary find of crown Psittaciformes in Asia (and Siberia in particular) and is also the northern-most find of this bird order worldwide. This find documents a broad geographical distribution of parrots during the warmest phase of the Miocene (the so-called ‘Miocene Climatic Optimum’), which has implications for the historical biogeography of Psittaciformes. The presence of parrots on both sides of the Pacific Ocean at the end of the Early Miocene implies a (most probably eastwards) trans-Beringian dispersal which likely took place about 16–18 Ma. The broad Eurasian distribution of parrots in the past further supports a hypothesis that ancestors of modern genera Coracopsis and Agapornis could reach Africa from Eurasia.

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