Oldest known pteroplistine cricket and other Gryllidae (Orthoptera) from the Paleogene Fur and Ølst Formations of Denmark

1999 ◽  
Vol 30 (1) ◽  
pp. 35-45 ◽  
Author(s):  
Jes Rust
Keyword(s):  
Marine Sediments ◽  
Large Body ◽  
Fish Fauna ◽  
Systematic Position ◽  
Climatic Changes ◽  
Wing Venation ◽  
Additional Material ◽  
Fossil Species ◽  
Male And Female ◽  
Near Shore

AbstractThe present paper reports on a study of 16 fossil specimens of Gryllidae from the Paleogene marine sediments of the Fur and Ølst Formations (Paleocene/Eocene) of Denmark. The oldest known Pteroplistinae, Pteroplistus danicus sp. n., is described on the basis of 2 isolated male forewings. Additional material consists of isolated male and female forewings, several almost complete female specimens, and large body fragments. The systematic position of these specimens, however, is unclear, because diagnostic characters are not preserved. Possible synapomorphic characters of the wing venation shared by P danicus sp. n., the second known fossil species of Pteroplistinae Eneopterotrypus chopardi Zeuner from the Eocene, and extant Pteroplistinae are proposed. Most of the fossil crickets derive from the Paleocene Ølst Formation. Pteroplistinae are poor flyers, thus their presence suggests near shore conditions of the former marine environment, which is confirmed by analysis of the fish fauna and other insect groups. The present geographical restriction of the Pteroplistinae to India, Vietnam, and Malaysia is presumably a consequence of climatic changes during the Cenozoic.

Mberu, a new neurigonine genus from southeastern Brazil (Diptera: Dolichopodidae)

Zootaxa ◽  
2011 ◽  
Vol 3101 (1) ◽  
pp. 38 ◽  
Author(s):  
RENATO SOARES CAPELLARI ◽  
DALTON DE SOUZA AMORIM
Keyword(s):  
Atlantic Forest ◽  
New Genus ◽  
Systematic Position ◽  
Southeastern Brazil ◽  
Wing Venation ◽  
Male And Female ◽  
Males And Females

A new genus of Dolichopodidae with modified wing venation both in males and females is described from the Atlantic Forest in southeastern Brazil, Mberu pepocatu gen. nov. et sp. nov. The species is described and illustrated in detail, including the male and female terminalia. The systematic position of Mberu is considered and the genus is assigned to the tribe Coeloglutini of Neurigoninae, possibly closely related to Coeloglutus Aldrich and Neotonnoiria Robinson.

Three new cribrimorph bryozoans (order Cheilostomatida) from the early Miocene of Argentina, with a discussion on spinocystal shield morphologies

2021 ◽  
pp. 1-15
Author(s):  
Juan López-Gappa ◽  
Leandro M. Pérez ◽  
Ana C.S. Almeida ◽  
Débora Iturra ◽  
Dennis P. Gordon ◽  
...  
Keyword(s):  
Type Species ◽  
Systematic Position ◽  
Early Miocene ◽  
Morphological Data ◽  
Fossil Species ◽  
Extant Species ◽  
The Family ◽  
Subjective Synonym

Abstract Bryozoans with calcified frontal shields formed by the fusion of costae, collectively constituting a spinocyst, are traditionally assigned to the family Cribrilinidae. Today, this family is regarded as nonmonophyletic. In the Argentine Cenozoic, cribrilinids were until recently represented by only two fossil species from the Paleocene of Patagonia. This study describes the first fossil representatives of Jolietina and Parafigularia: J. victoria n. sp. and P. pigafettai n. sp., respectively. A fossil species of Figularia, F. elcanoi n. sp., is also described. The material comes from the early Miocene of the Monte León and Chenque formations (Patagonia, Argentina). For comparison, we also provide redescriptions of the remaining extant species of Jolietina: J. latimarginata (Busk, 1884) and J. pulchra Canu and Bassler, 1928a. The systematic position of some species previously assigned to Figularia is here discussed. Costafigularia n. gen. is erected, with Figularia pulcherrima Tilbrook, Hayward, and Gordon, 2001 as type species. Two species previously assigned to Figularia are here transferred to Costafigularia, resulting in C. jucunda n. comb. and C. tahitiensis n. comb. One species of Figularia is reassigned to Vitrimurella, resulting in V. ampla n. comb. The family Vitrimurellidae is here reassigned to the superfamily Cribrilinoidea. The subgenus Juxtacribrilina is elevated to genus rank. Inferusia is regarded as a subjective synonym of Parafigularia. Parafigularia darwini Moyano, 2011 is synonymized with I. taylori Kuklinski and Barnes, 2009, resulting in Parafigularia taylori n. comb. Morphological data suggest that these genera comprise different lineages, and a discussion on the disparities among cribrilinid (sensu lato) spinocysts is provided. UUID: http://zoobank.org/215957d3-064b-47e2-9090-d0309f6c9cd8

Tidal fish connectivity of reef and sea grass habitats in the Indo-Pacific

2007 ◽  
Vol 87 (5) ◽  
pp. 1287-1296 ◽  
Author(s):  
Richard K.F. Unsworth ◽  
James J. Bell ◽  
David J. Smith
Keyword(s):  
Shallow Water ◽  
National Park ◽  
Fish Assemblages ◽  
Fish Fauna ◽  
Subsistence Fisheries ◽  
Tidal State ◽  
Sea Grass ◽  
Water Fish ◽  
Tidal Changes ◽  
Near Shore

The present study considered the influence of the tide on shallow water fish assemblages within the Wakatobi Marine National Park, Indonesia. Timed underwater visual observations were made across a gradient of intertidal to subtidal habitats from near-shore to reef crest at different tidal heights. Transient fish were found to dominate shallow water fish assemblages and the assemblage composition varied with tidal state. Fish assemblages were more diverse and abundant at higher tides in both coral and sea grass habitats, however, this was more pronounced within sea grass habitats. A tidal reduction from ≈2.0m to ≈0.8m (above chart datum) corresponded to a 30% reduction in fish abundance, while species richness also significantly decreased from 13.5 to 10.8 species per standardized timed observation. Fifty fish groups were reported from sea grass habitats with the most abundant being from the Engraulidae family and Lethrinus harak, which form important local subsistence fisheries. This research confirms the importance of tidal changes in structuring the fish fauna of Indonesian sea grass habitats and underlines the connectivity that exists between these habitats and nearby coral reefs.

Amia cf. pattersoni from the Paleocene Paskapoo Formation of Alberta

2000 ◽  
Vol 37 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Lance Grande ◽  
Li Guo-Qing ◽  
Mark VH Wilson
Keyword(s):  
North America ◽  
Fish Fauna ◽  
Taxonomic Diversity ◽  
Geographic Range ◽  
Green River Formation ◽  
Early Eocene ◽  
Freshwater Teleost ◽  
Additional Material ◽  
Green River ◽  
South Central

A well-prepared anterior half of an amiid skull from the Late Paleocene Paskapoo Formation of south-central Alberta is described. The specimen is either very closely related to, or conspecific with, Amia pattersoni Grande and Bemis, 1998, from the Early Eocene Green River Formation of Wyoming. We leave the specimen as Amia cf. pattersoni until additional material is found to further clarify its relationships. Amia cf. pattersoni is the oldest known specimen clearly identifiable as belonging to the genus Amia (sensu Grande and Bemis, 1998), and the Paskapoo species extends the known geographic range of Amia both northward and westward. The fish assemblage of the Paskapoo Formation represents the most diverse freshwater Paleocene fish fauna known from North America. Based on comparisons of sample size and relative taxonomic diversity to the better known Green River Formation localities of Wyoming, we predict that further collecting will substantially increase the known diversity of the Paskapoo fauna. The Paskapoo Formation, therefore, has great potential to continue adding to the meager knowledge of pre-Eocene freshwater teleost diversity in North America.

The Neurocognitive and Evolutionary Bases of Sex Differences in Website Design Preferences

2010 ◽  
pp. 725-733 ◽  
Author(s):  
Eric Stenstrom ◽  
Gad Saad
Keyword(s):  
Sex Differences ◽  
Cognitive Processing ◽  
Large Body ◽  
Theoretical Framework ◽  
Perceptual Information ◽  
Website Design ◽  
Business Managers ◽  
Male And Female ◽  
Female Consumers ◽  
Design Preferences

Marketing managers habitually use sex as a form of segmentation since it satisfies several requirements for efficient implementation including profitability, identifiability, accessibility, and measurability (Darley & Smith, 1995). Nevertheless, sex differences in marketing remain under-researched and continue to be a source of confusion for managers (Hupfer, 2002). Sex differences in cognitive processing are particularly relevant to e-business managers given that online consumers must process various types of spatial and perceptual information while navigating online. Despite the large body of evidence documenting consistent sex differences in cognition (Kimura, 2004), there is a paucity of research exploring how male and female consumers respond differently to various website design aspects (Cyr & Bonanni, 2005; Moss, Gunn, & Heller, 2006; Simon, 2001). Moreover, the few studies that have examined sex differences in online preferences were not grounded in any consilient theoretical framework.

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