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David A. Grimaldi
American Museum of Natural History
236Publications
41H-index
8,414Citations
Publications 238
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#1David A. Bullis (ESF: State University of New York College of Environmental Science and Forestry)
#2Hollister W. Herhold (AMNH: American Museum of Natural History)H-Index: 1
Last.Rebecca J. Rundell (ESF: State University of New York College of Environmental Science and Forestry)H-Index: 7
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Abstract The amber fossil record of land snails is poorly studied, with few described species relative to other invertebrate groups (e.g., insects and chelicerates). Recently discovered land snail amber fossils from Myanmar present an important opportunity to understand the tropical land snail fauna of the Cretaceous, which was a time when many terrestrial invertebrates were rapidly diversifying. We describe 12 new land snail species in 3 families from mid-Cretaceous Burmese amber:Eotrichophorus...
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#1Jouko Rikkinen (UH: University of Helsinki)H-Index: 24
#2David A. Grimaldi (AMNH: American Museum of Natural History)H-Index: 41
Last.Alexander R. Schmidt (GAU: University of Göttingen)H-Index: 25
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Myxomycetes constitute a group within the Amoebozoa well known for their motile plasmodia and morphologically complex fruiting bodies. One obstacle hindering studies of myxomycete evolution is that their fossils are exceedingly rare, so evolutionary analyses of this supposedly ancient lineage of amoebozoans are restricted to extant taxa. Molecular data have significantly advanced myxomycete systematics, but the evolutionary history of individual lineages and their ecological adaptations remain u...
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#1David A. Grimaldi (AMNH: American Museum of Natural History)H-Index: 41
#2Enrique Peñalver (Instituto Geológico y Minero de España)H-Index: 18
Last.Michael S. Engel (KU: University of Kansas)H-Index: 37
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Angiosperms and their insect pollinators form a foundational symbiosis, evidence for which from the Cretaceous is mostly indirect, based on fossils of insect taxa that today are anthophilous, and of fossil insects and flowers that have apparent anthophilous and entomophilous specializations, respectively. We present exceptional direct evidence preserved in mid-Cretaceous Burmese amber, 100 mya, for feeding on pollen in the eudicot genus Tricolporoidites by a basal new aculeate wasp, Prosphex ant...
1 CitationsSource
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#1Tobias Policha (UO: University of Oregon)H-Index: 3
#2David A. Grimaldi (AMNH: American Museum of Natural History)H-Index: 41
Last.Bitty A. Roy (UO: University of Oregon)H-Index: 29
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1. Dracula orchids mimic mushrooms in appearance and scent, and are pollinated by mushroom flies. This study examined the guilds of insect visitors to Dracula species and to co‐occurring mushrooms in an Ecuadorean cloud forest. Significant visitor overlap was documented (mostly in the genera Zygothrica and Hirtodrosophila; Drosophilidae). To test the brood‐site mimicry hypothesis, behavioural observations were also performed and rearing success was examined. 2. Many fly species that visit Dracul...
2 CitationsSource
#1Scott E. Brooks (AAFC: Agriculture and Agri-Food Canada)H-Index: 7
#2Jeffrey M. Cumming (AAFC: Agriculture and Agri-Food Canada)H-Index: 10
Last.David A. Grimaldi (AMNH: American Museum of Natural History)H-Index: 41
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Two closely related and distinctive species of Schistostoma Becker, i.e. Schistostoma burmanicum sp. nov. and Schistostoma foliatum sp. nov. , are described from two male specimens preserved in mid-Cretaceous Burmese amber and recorded as the first known fossil representatives of this extant genus of Microphorinae. Both species possess greatly enlarged lamellate fore tibiae and modified leg chaetotaxy that are presumably male secondary sexual features. The generic limits of Schistostoma are brie...
1 CitationsSource
Last.David A. GrimaldiH-Index: 41
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#1Hollister W. Herhold (AMNH: American Museum of Natural History)H-Index: 1
#2Steven R. Davis (AMNH: American Museum of Natural History)H-Index: 14
Last.David A. Grimaldi (AMNH: American Museum of Natural History)H-Index: 41
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Bees of the family Halictidae (Apoidea: Anthophila) have three pairs of thick, bundled muscles that are circular to subcircular in cross section within the first metasomal segment, as revealed by micro-CT scanning of 16 species in 15 genera of five bee families. In nonhalictids and the basal halictid subfamily Rophitinae, these muscles are planar (flat and sheetlike), typically lying between the anterior air sacs and abdominal wall. In Nomiinae and Halictinae, these muscles, especially the dorsa...
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#1Enrique Peñalver (Instituto Geológico y Minero de España)H-Index: 18
#2Antonio Arillo (Complutense University of Madrid)H-Index: 16
Last.Ricardo Pérez-de la Fuente (University of Oxford)H-Index: 10
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The originally published version of this Article was updated shortly after publication to add the word ‘Ticks’ to the title, following its inadvertent removal during the production process. This has now been corrected in both the PDF and HTML versions of the Article.
1 CitationsSource
#1Brian V. Brown (Natural History Museum of Los Angeles County)H-Index: 15
#2Art Borkent (AMNH: American Museum of Natural History)H-Index: 16
Last.Manuel A. Zumbado (Instituto Nacional de Biodiversidad)H-Index: 6
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Estimations of tropical insect diversity generally suffer from lack of known groups or faunas against which extrapolations can be made, and have seriously underestimated the diversity of some taxa. Here we report the intensive inventory of a four-hectare tropical cloud forest in Costa Rica for one year, which yielded 4332 species of Diptera, providing the first verifiable basis for diversity of a major group of insects at a single site in the tropics. In total 73 families were present, all of wh...
10 CitationsSource
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