from the Paleocene (Danian) to the Eocene ( Zherikhin 1978 ). However, Kodrul (1999) decisively dated the Naibuchi Formation to Middle Eocene. Sakhalinian amber belongs to the rumanite-type amber. Common for such fossil resins is a high degree of polymerization of the resin itself and deformation
Viktor Baranov, Trond Andersen and Evgeny E. Perkovsky
Lars Vilhelmsen and Michael S. Engel
veracity of his identification. In this paper, we describe an adult female from Eocene Baltic amber (Lutetian stage, ca. 45 million years ago), which we tentatively place in the subfamily Tenthredininae. We place the fossil taxon in a new genus, since comparison with a range of representatives of extant
Diana K. Pérez-Lara, Carlos Castañeda-Posadas and Emilio Estrada-Ruiz
, Estrada-Ruiz et al. (2010) described wood resembling Anacardiaceae / Burseraceae from the late Campanian of the Olmos Formation. We describe a new genus and species of Anacardiaceae from the El Bosque Formation (Eocene). Bosquesoxylon represents the oldest record of radial canals in Mexico. This new
Xin Wang, Kai-He Du, Tie-Mei Yi and Jian-Hua Jin
Cytoplasm with great structural details was found in a fossil trunk of Paraphyllanthoxylon from the Eocene of Hainan, China. The cytoplasmic remains were found in the bark tissue, and included a subcellular structure resembling a nucleus seen in a well-preserved fossilized cell. This observation may imply that cytoplasm is common in the fossil world, and calls for more attention from scientists.
Alessandro Garassino and Antonio De Angeli
Recently, Beschin et al. (2001) have described two specimens of palinurids, discovered at Chiampo (“Albanello” quarry, Vicenza, northern Italy). Preserved three dimensionally, these were collected from limestones of Lutetian (middle Eocene) age. The peculiar ornament of the dorsal carapace surface, consisting of imbricate scales in the cephalic region and parallel grooves in the branchial and cardiac regions, has allowed these to be ascribed to Justitia Holthuis, 1946, as a new species (J. vicetina Beschin et al., 2001), in the infraorder Palinuridea Latreille, 1802. This represents the first fossil record of this genus.
Julián F. Petrulevičius
Introduction Odonata are quite well recorded in the Eocene of Patagonia. They are represented by body fossils and/or traces in three different localities ( Fig. 1 A ). Oviposition scars are recorded in Río Pichileufú (Lutetian: 47.7 Ma; Río Negro province) and Laguna del Hunco (Ypresian: 52
Steven R. Manchester and E.A. Wheeler
Clarnoxylon blanchardii gen. et sp. nov. is a new taxon for fossil wood with a suite of features diagnostic of the Juglandaceae. It occurs at two Middle Eocene (c. 43-44 million years b.p.) localities in the Clarno Fonnation of central Oregon, USA. Clarnoxylon resembles the Platycaryeae and the Hicorieae in having exclusively simple perforation plates and solid pith. However, the common occurrence of crystalliferous idioblasts in the rays, but not in the axial parenchyma, and the cooccurrence at Clarno of platycaryoid fmits and pollen unaccompanied by hicorioid fmits indicate that Clarnoxylon has affinities with the Platycaryeae. Differences between Clarnoxylon and Platycarya support previous suggestions that short vessel elements, helical thickenings, and vascular tracheids are derived characters of Platycarya. These differences are also in accord with the ecological adaptation of the extant genus Platycarya to a temperate climate contrasting with the tropical Middle Ebcene setting of Clarnoxylon.
Richard Jagels, Ben A. LePage and Mei Jiang
This paper provides the first definitive identification of fossil Larix Miller wood using the characteristic features of ray-tracheid bordered pits. The wood was recovered from the middle Eocene (Lutetian/Uintan; 41.3– 47.5 Ma) Buchanan Lake Formation on eastern Axel Heiberg Island in the Canadian High Arctic and extends the fossil record of Larix wood further back in geologic time. A new and rapid embedding method is described which provides a firm and non-destructive matrix for thinsectioning and examining the well-preserved details of the wood. The wood is associated with Larix altoborealis LePage & Basinger, a shortbracted species, which was previously described from this locality as the earliest known species of Larix.
Alessandro Garassino and Antonio De Angeli
New material forces a reconsideration of Austromunida casadioi Schweitzer & Feldmann, 2000. Originally the type species of a new genus, we find that this is only a species of the genus Munida Leach, 1820.
Antonio De Angeli and Alessandro Garassino
At Monte Magrèa series of calcarenites of Ypresian and Lutetian age is exposed. The anomuran faunas were collected from the lower strata in this succession, along the road from Monte MagrË to Monte di Malo. These levels, indurated and white in color, contain nummulitid foraminifera, nodules and fragments of coralligenous algae, and moulds of corals, molluscs and other decapod crustaceans (e.g. Cyamocarcinus angustifrons Bittner, 1883).