scholarly journals Muricidae (Neogastropoda) from the Middle Eocene of the Hungarian Paleogene Basin

2019 ◽  
Vol 36 ◽  
pp. 31-51
Author(s):  
Zoltán Kovács ◽  
Zoltán Vicián
Keyword(s):  
New Species ◽  
Middle Eocene ◽  
Two New Species

A Middle Eocene (Lutetian–Early Bartonian) muricid assemblage with eight species is described and illustrated from the Hungarian Paleogene Basin. Th ree species and one genus are newly recorded in Hungary, and two new species are described: Paziella (Flexopteron) zsoldosi n. sp. and Harmatia tokodensis n. sp. With 31 figures.

To the origin of Lake Baikal endemic gammarid radiations, with description of two new Eulimnogammarus spp.

Zootaxa ◽  
2020 ◽  
Vol 4766 (3) ◽  
pp. 457-471
Author(s):  
VICTORIA N. MOSKALENKO ◽  
TATIANA V. NERETINA ◽  
LEV Y. YAMPOLSKY
Keyword(s):  
New Species ◽  
Lake Baikal ◽  
Middle Eocene ◽  
Nuclear Genes ◽  
Ancestral State ◽  
Fresh Waters ◽  
Two New Species ◽  
Basal Position ◽  
Molecular Characters

Extraordinarily diverse morphologically and ecologically, Lake Baikal’s two endemic gammaroidean amphipod clades are both firmly placed within the paraphyletic genus Gammarus, based both on morphological and molecular characters. However, the exact placement of the two Baikal clades remains elusive, making reconstruction of the ancestral state of Baikal endemic radiation difficult. We sequenced 2 mitochondrial and 3 nuclear genes from several species of each of the two clades aiming to represent early branches of the radiation. We also describe two new species of Baikal gammarids, Eulimnogammarus etingovae sp. nov. and Eulimnogammarus tchernykhi sp. nov., with some morphology suggestive of basal position within the radiation. We confirm the two previously demonstrated Baikal clades, but cannot unequivocally support any of the previous hypotheses about affinities of the two Baikal clades within palearctic Gammarus species. Rather, it appears that the two Baikal endemic radiations separated from the rest of freshwater Palearctic forms early and rapidly, probably as part of gammarid diversification during colonization of fresh waters in Middle Eocene. 

scholarly journals Two new species of <i>Mennerotodus</i> Zhelezko, 1994 (Chondrichthyes: Lamniformes: Odontaspididae), from the Paleogene of the southeastern United States

Fossil Record ◽  
2020 ◽  
Vol 23 (2) ◽  
pp. 117-140
Author(s):  
David J. Cicimurri ◽  
Jun A. Ebersole ◽  
George Martin
Keyword(s):  
United States ◽  
New Species ◽  
North American ◽  
Middle Eocene ◽  
Southeastern United States ◽  
Single Species ◽  
The World ◽  
Two New Species ◽  
Early Paleocene

Abstract. Mennerotodus Zhelezko, 1994, is an extinct lamniform shark known to occur in Paleogene strata of the Tethyan region of Asia and Europe. Although only a single species has been named, multiple subspecies have been erected and used as biostratigraphic tools in Asia. The genus has not been reported with confidence outside of the Tethyan region, but we have identified two new species of Mennerotodus from Paleogene deposits of the southeastern United States. Mennerotodus mackayi sp. nov. is described by teeth occurring in the lower Paleocene (Danian Stage) Pine Barren Member of the Clayton Formation of southern Alabama. A middle Eocene (Bartonian) species, Mennerotodus parmleyi sp. nov., is based on material occurring in the Clinchfield Formation in central Georgia. The early Paleocene record could indicate a North American origin for Mennerotodus relatively soon after the K–Pg event, with subsequent radiation to other parts of the world. The genus is likely more widely distributed than is currently known, but teeth can easily be overlooked due to their similarity to other taxa.

Paleogene Verrucidae (Cirripedia: Verrucomorpha) of North America, with descriptions of three new species

Zootaxa ◽  
2019 ◽  
Vol 4712 (1) ◽  
pp. 34-50
Author(s):  
RAY T. PERREAULT ◽  
JOHN S. BUCKERIDGE
Keyword(s):  
North Carolina ◽  
New Species ◽  
North America ◽  
Shallow Water ◽  
Transition Zone ◽  
Middle Eocene ◽  
Washington State ◽  
Upper Eocene ◽  
Two New Species ◽  
Three New Species

In North America, Paleogene Verrucidae are rarely encountered. Only a single named species has been previously discussed by Zullo & Baum (1979), who provisionally assigned a Palaeocene form from North Carolina to Verruca rocana Steinmann, 1921. Eocene deposits in Washington State (USA) have now yielded two new species from intertidal to shallow water environments: Verruca gailgoedertae sp. nov. from the middle Eocene Crescent/McIntosh transition zone, and Verruca sorrellae sp. nov. from the upper Eocene to lowest Oligocene Gries Ranch and basal Lincoln Creek formations. Both species are characterized by punctate shell plates, and are placed in the lineage of Verruca stroemia (O.F. Müller, 1776). In Alabama, marls from the upper Yazoo Formation (Pachuta and Shubuta Members) have yielded Verruca alabamensis sp. nov., an uncommon deeper water form associated with abundant brachiopods and phosphate deposition. This last species shows no development of punctae and is not related to the lineage that leads directly to Verruca stroemia. 

scholarly journals The bees of Early Eocene Cambay amber (Hymenoptera: Apidae)

2013 ◽  
pp. 1 ◽  
Author(s):  
Michael S. Engel ◽  
Jaime Ortega-Blanco ◽  
Paul C. Nascimbene ◽  
Hukam Singh
Keyword(s):  
New Species ◽  
Middle Eocene ◽  
Baltic Amber ◽  
Early Eocene ◽  
New Subgenus ◽  
Two New Species

The fauna of bees known from Early Eocene (Ypresian) Cambay amber are reviewed.  Presently only three species have been recovered, all from among the corbiculate Apinae and representing the extinct tribes Electrapini and Melikertini, and all from genera known from the slightly younger middle Eocene Baltic amber.  A single, poorly-preserved and fragmentary female of an unidentifiable species of Protobombus Cockerell is recorded.  Two new species of the genus Melikertes Engel are documented, one representing a new subgenus, Paramelikertes Engel & Ortega-Blanco, as is a third, fragmentary melikertine of uncertain identity.  The new species are Melikertes (Paramelikertes) gujaratensis Engel & Ortega-Blanco, new species, and M. (Melikertes) kamboja Engel & Ortega-Blanco, new species.

Ceratopetalum fruits from Australian cainozoic sediments and their significance for petal evolution in the genus

1999 ◽  
Vol 12 (5) ◽  
pp. 635 ◽  
Author(s):  
Richard W. Barnes ◽  
Robert S. Hill
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Middle Eocene ◽  
South Australia ◽  
Ancestral State ◽  
Fossil Species ◽  
Inferior Ovary ◽  
Central Disk ◽  
Two New Species

Ceratopetalum Sm. fruits are characterised by 4–6 enlarged woody sepals radiating from a central disk, a semi-inferior ovary, anthers between and above each sepal and three-trace sepal venation with a prominent intra-sepal vein. Two new species of Ceratopetalum are described from fruits extracted from Australian Cainozoic sediments, C. westermannii and C. maslinensis. The presence of Ceratopetalum in Middle Eocene Maslin Bay sediments, South Australia, indicates a more widespread geographic distribution for the genus during the Cenozoic. Petally is present in one extant and two fossil species and probably represents the ancestral state despite apetally in the oldest known fossil. Petals have probably been secondarily lost in response to fruit specialisation or a change in pollinator vector.

Two new species of Dacrydium (Podocarpaceae) based on vegetative fossils from middle eocene sediments at Nelly Creek, South Australia

2001 ◽  
Vol 14 (2) ◽  
pp. 193 ◽  
Author(s):  
Robert S. Hill ◽  
David C. Christophel
Keyword(s):  
New Species ◽  
Water Availability ◽  
Middle Eocene ◽  
South Australia ◽  
South Eastern ◽  
Early Oligocene ◽  
Eastern Australia ◽  
Two New Species ◽  
Central Australia ◽  
South Eastern Australia

Two new macrofossil species of Dacrydium (Podocarpaceae), D. fimbriatus (with dimorphic foliage) and D. mucronatus, are described from Middle Eocene sediments at Nelly Creek just south of Lake Eyre South. These species extend the number of Dacrydium macrofossil species from four to six, the macrofossil range from south-eastern to central Australia and the earliest macrofossil record of the genus from the Early Oligocene to Middle Eocene. On the basis of the low numbers and poor development of epiphyllous germlings, these species were probably growing in a region where water availability was reduced compared with Paleogene sites in south-eastern Australia, but the morphology of the foliage does not reflect that.

scholarly journals Neorotalia omanensis and Operculina musawaensis from the Sultanate of Oman

2013 ◽  
Vol 18 ◽  
pp. 41
Author(s):  
Abdul Razak Siddiq Al-Sayigh
Keyword(s):  
New Species ◽  
Middle East ◽  
Benthic Foraminifera ◽  
Middle Eocene ◽  
Planktonic Foraminifera ◽  
Early Eocene ◽  
Sultanate Of Oman ◽  
Larger Benthic Foraminifera ◽  
Oman Mountains ◽  
Two New Species

Two new species of larger benthic foraminifera, Neorotalia omanensis n. sp. and Operculina musawaensis n. sp. are described and illustrated from the eastern Oman Mountains. N. omanensis n. sp. occurs in the Musawa Formation in association with the planktonic foraminifera Morozovella edgari and Truncarotaloides topilensis indicating an early to middle Eocene age (P10-P13). Operculina musawaensis n. sp. occurs in the Abat Formation in association with the planktonic foraminifera Acarinina esnaensis and A. soldadensis indicating an early Eocene age (P6).  This is the first known record showing the presence of genus Neorotalia in the Middle East. Representatives of the larger foraminiferal genus Linderina sp. are also described and illustrated from the Musawa Formation and compared with the published Linderina species in the surrounding countries.  

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