scholarly journals A new raninoid crab (Decapoda, Brachyura, Raninidae) from the early Oligocene (late Rupelian) of Italy

2017 ◽  
Vol 4 (1) ◽  
pp. 87 ◽  
Author(s):  
Giovanni Pasini ◽  
Alessandro Garassino
Keyword(s):  
Systematic Review ◽  
New Genus ◽  
Early Eocene ◽  
Original Sample ◽  
Fossil Species ◽  
Early Oligocene

Pasini &amp; Garassino (2017) did a preliminary systematic review of the worldwide fossil species of <em>Ranina</em>, pointing out that it was used as “basket genus” for almost two centuries to accommodate different questionable taxa pertaining or not to Raninoidea. The result was that just four species were possibly assigned to <em>Ranina</em> compared to 23 species previously listed by Karasawa <em>et al</em>. (2014). Among the studied species, a rich sample of specimens from the early Oligocene of the Ligure-Piemontese Basin (Italy), previously assigned to Ranina speciosa by Ristori (1889) and Allasinaz (1987), has been revised and here discussed. The studied specimens are herein assigned to the new genus Alcespina, with <em>A. ovadaensis</em> n. sp (Raninidae), whereas five specimens of Allasinaz’s original sample are assigned to <em>Raninoides</em> H. Milne Edwards, 1837. Finally, this study allows us to review the questionable species <em>Ranina berglundi</em> Squires &amp; Demetrion, 1992, from the early Eocene of Mexico, herein also assigned to <em>A. berglund</em>i (Squires &amp; Demetrion, 1992) n. comb.

Ocotea dilcherii, a new name for Ocotea obtusifolia (Berry) LaMotte (Lauraceae)

Phytotaxa ◽  
2015 ◽  
Vol 239 (2) ◽  
pp. 199
Author(s):  
Sergei Vasilyevich Vikulin
Keyword(s):  
Natural History ◽  
Type Specimen ◽  
Valid Species ◽  
Early Eocene ◽  
National Museum ◽  
Mississippi Embayment ◽  
Fossil Species ◽  
Early Oligocene ◽  
Leaf Remains ◽  
Nomen Novum

The fossil species  Oreodaphne obtusifolia Berry (1916: 301) was described, based on the fossil leaf remains of the most abundant laurel from the Early Eocene Wilcox Group sediments of Holly Springs: Marshall Co, Grenada Co., Miss.: Mississippi embayment (Southeastern North America). Nowadays, most systematists consider the extant Oreodaphne to be a member of Ocotea (Mez, 1889: 219; Rohwer, 1986; van der Werff, 2002; Chanderbali et al., 2001). LaMotte (1952) transferred Berry’s (1916: 301) combination to Ocotea, and this transfer was followed by Dilcher (1963), who reinforced attribution of Wilcox leaf megafossils to Ocotea by cuticular analysis of epidermis and stomata (Dilcher & Lott, 2005). However, according to Art. 53.1 of the ICN (McNeill et al.  2012) the name Ocotea obtusifolia (Berry) LaMotte (1952) is illegitimate because of the existence of the earlier overlooked homonym, Ocotea obtusifolia Kunth (1817: 165–166), an extant lauraceous species from Colombia (Muséum National d’Histoire Naturelle, holotype: http://plants.jstor.org/stable/10.5555/al.ap.specimen.P00128771). The homonymy between these fossil and extant American species of Ocotea was revealed during the description of the new fossil Early Oligocene species Ocotea rossica Vikulin from the south of the Middle-Russian upland (Vikulin, 2015: 326). Since Ocotea obtusifolia (Berry) LaMotte has been systematically recognized as a valid species in current use and it does not have any synonym, a nomen novum, O. dilcherii, is formally proposed here as a replaced name. Because a type specimen was not indicated among the validating illustrations of Berry (1916: pl. 80, fig. 1; pl. 83, fig. 2–5, and pl. 84, fig. 1 and 2), a lectotype must be designated here, from the specimens illustrated in the protologue (Berry, 1916: 301–302) amongst those perfect specimens with blunt leaf apex, which are very abundant in the clays at Puryear, Tenn. (Proposed lectotype: paleobotany collection # USNM 35867, Smithsonian National Museum of Natural History (USA), illustrated in Berry, 1916: 301, pl. 83, fig. 5.

scholarly journals Fossil dragonflies (Odonata: Anisoptera) from the early Eocene Okanagan Highlands, western North America

2019 ◽  
Vol 151 (6) ◽  
pp. 783-816
Author(s):  
S. Bruce Archibald ◽  
Robert A. Cannings
Keyword(s):  
North America ◽  
New Genus ◽  
Early Eocene ◽  
Western North America ◽  
New Genus And Species ◽  
Burmese Amber ◽  
Early Oligocene ◽  
Okanagan Highlands

AbstractWe describe the first dragonflies (Odonata: Anisoptera) from the early Eocene Okanagan Highlands of far-western North America from nine fossils. Six are assigned to five species in four new, named genera of Aeshnidae: Antiquiala snyderaenew genus and species, Idemlinea versatilisnew genus and species, Ypshna brownleeinew genus and species, Ypshna latipennatanew genus and species, and Eoshna thompsonensisnew genus and species; we treat one as Aeshnidae genus A, species A; one is assigned to Gomphidae: Auroradraco eosnew genus and species; and we treat a ninth, fragmentary fossil of unknown family affinity as Anisoptera indeterminate genus A, species A, which represents a seventh genus and eighth species. The dominance of Aeshnidae is consistent with other Paleocene and Eocene fossil localities. Auroradraco eos is the only fossil Gomphidae in the roughly 66-million-year gap between occurrences in mid-Cretaceous Burmese amber and the early Oligocene of France. Ypshna appears close to Parabaissaeshna ejerslevense from the early Eocene Fur Formation of Denmark; this is not surprising given Holarctic intercontinental connections at this time and a growing list of insect taxa shared between the Okanagan Highlands and the Fur Formation.

On Candinia (Sacoglossa: Juliidae), a new fossil genus of bivalved gastropods

1996 ◽  
Vol 70 (2) ◽  
pp. 230-235 ◽  
Author(s):  
Jacques Le Renard ◽  
Bruno Sabelli ◽  
Marco Taviani
Keyword(s):  
New Genus ◽  
First Record ◽  
Fossil Species ◽  
Shallow Marine ◽  
Marine Deposits ◽  
The Family ◽  
Life Habits ◽  
The Mediterranean ◽  
Fossil Genus ◽  
The Mediterranean Basin

The record of the fossil representatives of the family Juliidae is updated. The new genus Candinia is proposed, in the subfamily Juliinae, for two fossil species somewhat intermediate between Julia and Berthelinia. The new species Candinia pliocaenica is recorded from the lower Pliocene shallow marine deposits near Siena (Tuscany, Italy). This is the first record of Sacoglossa in the Mediterranean Basin. Based on the very specialized life habits of the Juliidae, it is suggested that subtropical Caulerpa algal prairies inhabited the Mediterranean during the early Pliocene, likely becoming extinct in this basin because of the mid-Pliocene climatic deterioration.

scholarly journals New phiocricetomyine rodents (Hystricognathi) from the Jebel Qatrani Formation, Fayum Depression, Egypt

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e12074
Author(s):  
Shorouq F. Al-Ashqar ◽  
Erik R. Seiffert ◽  
Dorien de Vries ◽  
Sanaa El-Sayed ◽  
Mohamed S. Antar ◽  
...  
Keyword(s):  
New World ◽  
New Genus ◽  
Late Eocene ◽  
Type Locality ◽  
New Genus And Species ◽  
Additional Material ◽  
Early Oligocene ◽  
Species Type ◽  
The Rich ◽  
Latest Eocene

Background The rich rodent assemblages from the Eocene–Oligocene deposits of the Jebel Qatrani Formation (Fayum Depression, Egypt) have important implications for our understanding of the origin and paleobiogeography of Hystricognathi, a diverse clade that is now represented by the Afro-Asiatic Hystricidae, New World Caviomorpha, and African Phiomorpha. Methods Here we present previously undescribed material of the enigmatic hystricognath clade Phiocricetomyinae, from two stratigraphic levels in the lower sequence of the Jebel Qatrani Formation—a new genus and species (Qatranimys safroutus) from the latest Eocene Locality 41 (~34 Ma, the oldest and most productive quarry in the formation) and additional material of Talahphiomys lavocati from that species’ type locality, early Oligocene Quarry E (~31–33.2 Ma). Results The multiple specimens of Qatranimys safroutus from L-41 document almost the entire lower and upper dentition, as well as mandibular fragments and the first cranial remains known for a derived phiocricetomyine. Specimens from Quarry E allow us to expand comparisons with specimens from Libya (late Eocene of Dur at-Talah and early Oligocene of Zallah Oasis) that have been placed in T. lavocati, and we show that the Dur at-Talah and Zallah specimens do not pertain to this species. These observations leave the Fayum Quarry E as the only locality where T. lavocati occurs.

Revision of Oligocene ‘Paraphiomys’ and an origin for crown Thryonomyoidea (Rodentia: Hystricognathi: Phiomorpha) near the Oligocene–Miocene boundary in Africa

2019 ◽  
Vol 190 (1) ◽  
pp. 352-371 ◽  
Author(s):  
Hesham M Sallam ◽  
Erik R Seiffert
Keyword(s):  
Type Species ◽  
Close Agreement ◽  
New Genus ◽  
Late Eocene ◽  
Long Period ◽  
Early Oligocene ◽  
South West ◽  
South West Africa ◽  
Divergence Estimates ◽  
First Time

Abstract ‘Paraphiomys’ simonsi is a phiomorph rodent from the early Oligocene of Egypt (~29–30 Mya) that has historically been aligned with much younger (&lt; ~20 Mya) Miocene species of the genera Paraphiomys and Neosciuromys. Here, we use Bayesian tip-dating analysis of a 109-character morphological matrix containing 57 living and extinct ctenohystricans to test these proposed placements for ‘Paraphiomys’ simonsi. Our analyses provide support for the exclusion of ‘Paraphiomys’ simonsi from both Paraphiomys and Neosciuromys and justify the establishment of a new genus (Monamys gen. nov.) for this stem thryonomyoid. These analyses also indicate that the divergence of the extant dassie rat Petromus from the extant cane rat Thryonomys (i.e. origin of crown Thryonomyoidea) occurred ~23.7 Mya, close to the Oligocene–Miocene boundary and in close agreement with recent molecular estimates for this split. Miocene Neosciuromys, Paraulacodus, Protohummus and the type species of Paraphiomys are identified as stem thryonomyids, whereas the Namibian species Apodecter stromeri, Tufamys woodi, ‘Paraphiomys’ australis and ‘Paraphiomys’ roessneri are identified for the first time as stem petromurids, raising the possibility of a long period of endemic petromurid evolution in south-west Africa. Comparison of molecular divergence estimates with our optimal tip-dated topology suggests that stem bathyergoids are most likely to have arisen from late Eocene and early Oligocene ‘phiomyids’.

scholarly journals The last batrachideine of Europe: A new genus and species of pygmy grasshopper (Orthoptera: Tetrigidae) from Eocene Baltic amber

Zootaxa ◽  
2019 ◽  
Vol 4686 (3) ◽  
pp. 435-445
Author(s):  
M. JARED THOMAS ◽  
JOSIP SKEJO ◽  
SAM W. HEADS
Keyword(s):  
New Genus ◽  
Baltic Amber ◽  
Early Eocene ◽  
New Genus And Species

A new genus and species of pygmy grasshopper (Orthoptera: Tetrigidae) is described from Eocene Baltic amber. Danatettix hoffeinsorum gen. et sp. nov. is assigned to the subfamily Batrachideinae based on antennae with more than 19 antennomeres, sulcate mesofemora, and rectangular paranota. This species is readily distinguished from other batrachideines by a markedly produced vertex, pronotum with divergent internal and external lateral carinae, and highly setiferous female lateral basivalvular sclerite with scabrose integument. The morphology of Danatettix suggests placement within the here defined Tettigidea genus group (comprising Eutettigidea Hancock, 1914, Paurotarsus Hancock, 1900, and Tettigidea Scudder, 1862) and suggests that the latter had diverged from the new Scaria genus group (comprising Eotetrix Gorochov, 2012, Rehnidium Grant, 1956 and Scaria Bolívar, 1887) by the Early Eocene. 

New Uintasoricine (?Primates, Plesiadapiformes) From the Earliest Bridgerian, Latest Early Eocene of Wyoming

2012 ◽  
Vol 86 (6) ◽  
pp. 973-978 ◽  
Author(s):  
Gregg F. Gunnell
Keyword(s):  
North America ◽  
New Genus ◽  
Middle Eocene ◽  
Field Work ◽  
Biodiversity Hotspot ◽  
Individual Species ◽  
Early Eocene ◽  
New Genus And Species ◽  
Body Weights ◽  
New Form

Uintasoricines are diminutive plesiadapiforms that are found in the latest Paleocene through middle Eocene, predominantly in North America. They are not a diverse group but individual species may be locally abundant and they are a persistent element of the plesiadapiform radiation in North America surviving over a span of approximately 16 million years. Recent field work in southern Wyoming at South Pass has led to the discovery of a new genus and species of uintasoricine. The new form is smaller in tooth dimensions compared to other known uintasoricines, being slightly smaller thanUintasorex montezumicusfrom California. Both the newly described taxon andU. montezumicusare among the smallest plesiadapiforms yet known with body weights estimated to be 20 to 25 g. The sediments of the Cathedral Bluffs Tongue of the Wasatch Formation at South Pass contain a unique upland fauna—the presence of a distinctive uintasoricine in this assemblage adds further evidence to support the notion that this upland environment was a biodiversity hotspot during the latest early Eocene.

A new genus and first Cenozoic fossil record of moth lacewings (Neuroptera: Ithonidae) from the Early Eocene of North America

Zootaxa ◽  
2009 ◽  
Vol 2063 (1) ◽  
pp. 55-63 ◽  
Author(s):  
VLADIMIR N. MAKARKIN ◽  
S. BRUCE ARCHIBALD
Keyword(s):  
North America ◽  
Early Cretaceous ◽  
Fossil Record ◽  
New Genus ◽  
Early Eocene ◽  
New Genus And Species

A new genus and species Allorapisma chuorum gen. sp. nov. is described from the Early Eocene locality at Republic, Washington, U.S.A. The forewing venation of Allorapisma is most similar to that of the genus Principiala Makarkin & Menon from the Early Cretaceous of Brazil and Britain. A new, informal suprageneric taxon consisting of these genera is proposed, the Principiala group. The habitats of extant and fossil Ithonidae are briefly discussed.

Oldest new genus of Myrmeleontidae (Neuroptera) from the Eocene Green River Formation

Zootaxa ◽  
2017 ◽  
Vol 4337 (4) ◽  
pp. 540 ◽  
Author(s):  
VLADIMIR N. MAKARKIN
Keyword(s):  
New Genus ◽  
Green River Formation ◽  
Wing Venation ◽  
Early Eocene ◽  
Green River ◽  
The Family

Epignopholeon sophiae gen. et sp. nov. (Neuroptera: Myrmeleontidae) is described from the early Eocene of the Green River Formation (Colorado, U.S.A.). It represents the oldest confident record of the family. The new genus is remarkable in that tergite 7 of the female is much shorter than its long sternite 7. The preserved wing venation shows that the genus belongs to the subfamily Myrmeleontinae, and most probably to the tribe Gnopholeontini. The discovery of this species is consistent with estimations of relatively dry and warm conditions during deposition of the upper Parachute Creek Member of the Green River Formation. 

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