At the dated check, the references listed below either did not resolve in
Crossref or DataCite, or carried a retraction notice. Each one is shown with the
registry record that put it there.
The 211 checked references that resolve
resolves10.1007/BF00984101Abiotic pollen and pollination: Ecological, functional, and evolutionary perspectives
resolves10.3732/ajb.92.10.1737Dating phylogenetically basal eudicots using <i>rbcL</i> sequences and multiple fossil reference points
resolves10.1038/29210Switch from specialized to generalized pollination
resolves10.1086/427202The Conifer <i>Frenelopsis ramosissima</i> (Cheirolepidiaceae) in the Lower Cretaceous of Texas: Systematic, Biogeographical, and Paleoecological Implications
resolves10.1139/b76-246<i>Paleorosa similkameenensis</i>, gen. et sp. nov., permineralized flowers (Rosaceae) from the Eocene of British Columbia
resolves10.1016/0031-9422(91)83179-OChemical basis of a highly specific mutualism: Chiral esters attract pollinating beetles in Eupomatiaceae
resolves10.1007/BF00984108Convergent evolution and adaptive radiation of beetle-pollinated angiosperms
resolves10.1111/j.1439-0469.2008.00473.xA longstanding entomological problem finally solved? Head morphology of<i>Nannochorista</i>(Mecoptera, Insecta) and possible phylogenetic implications
resolves10.1186/1471-2148-9-61Inferring phylogenies with incomplete data sets: a 5-gene, 567-taxon analysis of angiosperms
resolves10.3417/2007006Pollinator Shifts and the Origin and Loss of Plant Species<sup>1</sup>
resolves10.1016/S0016-6995(80)80029-5Structure d'adhérencedes grains de pollen en tétrade du genre Classopollis PFLUG, 1953, de l'Hettangien de Saint-Fromont, Manche (France)
resolves10.2307/2399221Phylogenetic Analysis of Seed Plants and the Origin of Angiosperms
resolves10.3732/ajb.0800193Bennettitales from the Grisethorpe Bed (Middle Jurassic) at Cayton Bay, Yorkshire, UK
resolves10.3417/2007065The Fossil Record of Angiosperms: Requiem or Renaissance?<sup>1</sup>
resolves10.2307/2446345Fossil Clusiaceae from the Late Cretaceous (Turonian) of New Jersey and implications regarding the history of bee pollination
resolves10.3732/ajb.0800126Darwin's second “abominable mystery”: Why are there so many angiosperm species?
resolves10.3732/ajb.92.9.1475An extinct calycanthoid taxon, <i>Jerseyanthus calycanthoides</i> , from the Late Cretaceous of New Jersey
resolves10.1098/rstb.1957.0008The structure and function of the mouth parts of adult caddis flies (Trichoptera)
resolves10.1080/00222931308693329XXXV.—<i>Apropos of the first Maxillæ in the genus</i> Dipseudopsis, <i>Walk., Trichoptera</i>
resolves10.1080/00222931408693537III.—<i>Note on the characters of the head and mouth-parts in the genera</i> Plectrotarsus <i>and</i> Æthaloptera (<i>Trichoptera</i>)
resolves10.1086/314099Beetle Pollination and Floral Thermogenicity in<i>Magnolia</i><i>Tamaulipana</i>(Magnoliaceae)
resolves10.1016/S0022-1910(96)00024-8Digestion of Pollen Components by Larvae of the Flower-Specialist Bee Chelostoma florisomne (Hymenoptera: Megachilidae)
resolves10.1111/j.1095-8312.1992.tb00653.xAdaptation for oviposition into concealed cycad ovules in the cycad weevils Antliarhinus zamiae and A. signatus (Coleoptera: Curculionoidea)
resolves10.2307/2446138Is there a floral parasite mutualism in cycad pollination? the pollination biology of <i>Encephalartos villosus</i> (Zamiaceae)
resolves10.1086/589887Integrating Molecular Phylogenetic and Paleobotanical Evidence on Origin of the Flower
resolves10.1603/008.102.0619Saliva or Regurgitated Nectar? What <i>Heliconius</i> Butterflies (Lepidoptera: Nymphalidae) Use for Pollen Feeding
resolves10.3409/173491505783995635An Eocene ectoparasite of bees: The oldest definitive record of phoretic meloid triungulins (Coleoptera: Meloidae; Hymenoptera: Megachilidae)
resolves10.1007/BF00935989Pollen amino acids?an additional diet for a nectar feeding butterfly?
resolves10.2307/2388812Insects Associated with Reproductive Structures of Cycads in Queensland and Northeast New South Wales, Australia
resolves10.2307/3647343Generalist Flowers, Biodiversity and Florivory: Implications for Angiosperm Origins
resolves10.1073/pnas.0402473101Cretaceous flowers of Nymphaeaceae and implications for complex insect entrapment pollination mechanisms in early Angiosperms
resolves10.1007/BF00936404Beetle pollination and flowering rhythm ofAnnona spp. (Annonaceae) in Brazil
resolves10.1007/BF00984031Amino acids and sugars in nectar, and their putative evolutionary significance
resolves10.1017/S0031182000010957Further Observations on the Anatomy and Function of the Proboscis of the Blow-fly, <i>Calliphora erythrocephala</i> L.
resolves10.2307/2666181The Co-Radiations of Pollinating Insects and Angiosperms in the Cretaceous
resolves10.1071/BT03159Pollination ecology of the Australian cycad
<i>Lepidozamia peroffskyana</i>
(Zamiaceae)
resolves10.1007/BF00377084Adult feeding by holometabolous insects: pollen and nectar as complementary nutrient sources for Rhingia campestris (Diptera: Syrphidae)
resolves10.1007/BF00378732Interpreting patterns of resource utilization: randomness and selectivity in pollen feeding by adult hoverflies
resolves10.1055/s-2003-44717Pollination of <i>Nymphaea lotus</i> (Nymphaeaceae) by Rhinoceros Beetles and Bees in the Northeastern Ivory Coast
resolves10.1002/jmor.1107Head structures of<i>Priacma serrata</i>leconte (coleptera, archostemata) inferred from X‐ray tomography
resolves10.1126/science.1146954A Comprehensive Phylogeny of Beetles Reveals the Evolutionary Origins of a Superradiation
resolves10.1093/aob/mcn212A new pollination system: brood-site pollination by flower bugs in Macaranga (Euphorbiaceae)
resolves10.3732/ajb.91.9.1319Obligate pollination mutualism in <i>Breynia</i> (Phyllanthaceae): further documentation of pollination mutualism involving <i>Epicephala</i> moths (Gracillariidae)
resolves10.1139/z84-189Scanning electron microscope observations of pollen food bolus in the alimentary canal of honeybees (<i>Apis mellifera</i> L.)
resolves10.1016/S0195-6671(03)00029-6New pollen morphotype from gut compression of a Cretaceous insect, and its bearing on palynomorphological evolution and palaeoecology
resolves10.14411/eje.2008.037Flower visiting Neuroptera: Mouthparts and feeding behaviour of Nemoptera sinuata (Nemopteridae)
resolves10.1086/314154Morphology, Growth Habit, and Ecology of <i>Blanzyopteris praedentata</i> (Gothan) nov. comb., a Climbing Neuropteroid Seed Fern from the Stephanian of Central France
resolves10.1016/S0034-6667(00)00035-XFrenelopsis alata and its microsporangiate and ovuliferous reproductive structures from the Cenomanian of Bohemia (Czech Republic, Central Europe)
resolves10.1017/S1089332600001108Paleobiology of Predators, Parasitoids, and Parasites: Death and Accomodation in the Fossil Record of Continental Invertebrates
resolves10.1093/ae/51.1.14The Fossil Record of Insect Extinction: New Approaches and Future Directions
resolves10.3897/asp.64.e31644Silurian to Triassic plant and hexapod clades and their associations: new data, a review, and interpretations
resolves10.1073/pnas.91.25.12278Ninety-seven million years of angiosperm-insect association: paleobiological insights into the meaning of coevolution.
resolves10.2307/25065853Generalist flowers and phytophagous beetles in two tropical canopy trees: resources for multitudes
resolves10.4039/Ent133439-4Flies and flowers: taxonomic diversity of anthophiles and pollinators
resolves10.1007/BF00937588Reproductive biology of a primitive angiosperm,Pseudowintera colorata (Winteraceae), and the evolution of pollination systems in theAnthophyta
resolves10.1007/BF00988909Floral biology and reproductive ecology ofClusia nemorosa (Clusiaceae) in northeastern Brazil
resolves10.1086/340737A New Fossil Flower and Associated Coprolites: Evidence for Angiosperm‐Insect Interactions in the Santonian (Late Cretaceous) of Georgia, U.S.A.
resolves10.1093/sysbio/syq027Using Fossils to Break Long Branches in Molecular Dating: A Comparison of Relaxed Clocks Applied to the Origin of Angiosperms
resolves10.2307/2399969The Prosoeca peringueyi (Diptera: Nemestrinidae) Pollination Guild in Southern Africa: Long-Tongued Flies and Their Tubular Flowers
resolves10.1163/187631200X00336Cratomyia macrorrhyncha, a Lower Cretaceous brachyceran fossil from the Santana Formation, Brazil, representing a new species, genus and family of the Stratiomyomorpha (Diptera)
resolves10.1071/IS07005A phylogeny of long-tongued horse flies (Diptera : Tabanidae : Philoliche) with the first cladistic review of higher relationships within the family
resolves10.1080/00222939100770411The first thrips species (Insecta, Thysanoptera) from cycad male cones, and its family level significance
resolves10.1086/317899Thrips Pollination of the Central Australian Cycad, <i>Macrozamia macdonnellii</i> (Cycadales)
resolves10.2307/2446082Cockroach pollination and breeding system of <i>Uvaria elmeri</i> (Annonaceae) in a Lowland mixed‐dipterocarp forest in Sarawak
resolves10.1007/BF02344479Cretaceous coleopteran larva fed on a female fructification of extinct gymnosperm
resolves10.2307/2444562Insect-Cycad Symbiosis and its Relation to the Pollination of Zamia furfuracea (Zamiaceae) by Rhopalotria mollis (Curculionidae)
resolves10.1071/IT00001The first cycad-associated thrips in the family Phlaeothripidae,
<i>Stomothrips cycasi</i>
, gen. et sp. nov. (Thysanoptera)
resolves10.1086/337880Size Classes, Reproductive Behavior, and Insect Associates of Cycas media (Cycadaceae) in Australia
resolves10.1007/BF03052950Microscopic examination of faecal pellets of insect larvae feeding on leaves of some cycads
resolves10.2307/1221036INSECT REPRODUCTION AND FLORAL FRAGRANCES: KEYS TO THE EVOLUTION OF THE ANGIOSPERMS?
resolves10.1007/BF00940859Pollination of New CaledonianWinteraceae: Opportunistic shifts or parallel radiation with their pollinators?
resolves10.14411/eje.2004.081Two new wedge-shaped beetles in Albo-Cenomanian ambers of France (Coleoptera: Ripiphoridae: Ripiphorinae)
resolves10.1038/nature06039Dating the origin of the Orchidaceae from a fossil orchid with its pollinator
resolves10.1126/science.1178338A Probable Pollination Mode Before Angiosperms: Eurasian, Long-Proboscid Scorpionflies
resolves10.1111/j.1440-6055.1983.tb01863.xA NEW GENUS AND SPECIES OF POLLEN‐ AND NECTAR‐FEEDING KATYDIDS FROM EASTERN AUSTRALIA (ORTHOPTERA: TETTIGONIIDAE: ZAPROCHILINAE)
resolves10.1007/s00442-005-0045-0Experimental evaluation and thermo-physical analysis of thermogenesis in male and female cycad cones
resolves10.1086/335517The Pentoxyleae: A New Group of Jurassic Gymnosperms from the Rajmahal Hills of India
resolves10.1007/BF00424639Morphologie und funktion der malachiidenmundwerkzeuge unter besonderer berücksichtigung von Malachtus bipustulatus L. (Coleopt., Malacodermata)
resolves10.2307/2989827Saltatorial Orthoptera as Common Visitors to Tropical Flowers
resolves10.1093/aob/mcl201The Role of Thermogenesis in the Pollination Biology of the Amazon Waterlily Victoria amazonica
resolves10.1007/s004350000025Morphology and function of the proboscis in Bombyliidae (Diptera, Brachycera) and implications for proboscis evolution in Brachycera
resolves10.3732/ajb.0800202Seed ferns from the late Paleozoic and Mesozoic: Any angiosperm ancestors lurking there?
resolves10.1086/321929Thrips and Weevils as Dual, Specialist Pollinators of the Australian Cycad<i>Macrozamia communis</i>(Zamiaceae)
resolves10.3732/ajb.92.6.931Pollination of Australian <i>Macrozamia</i> cycads (Zamiaceae): effectiveness and behavior of specialist vectors in a dependent mutualism
resolves10.1007/s00606-003-0087-xAssociation of cone thermogenesis and volatiles with pollinator specificity in Macrozamia cycads
resolves10.2307/2387768Patterns of Pollination in the Primitive Angiosperms
resolves10.1086/317575New Perspectives on the Pollination Biology of Basal Angiosperms
resolves10.1139/b93-124Pollination in alpine Norway: flowering phenology, insect visitors, and visitation rates in two plant communities
resolves10.1093/aob/mcn092Cockroaches as Pollinators of Clusia aff. sellowiana (Clusiaceae) on Inselbergs in French Guiana
resolves10.1007/s00497-007-0054-8Proteomic evaluation of gymnosperm pollination drop proteins indicates highly conserved and complex biological functions
resolves10.1016/j.revpalbo.2009.03.006Permian Circulipuncturites discinisporis Labandeira, Wang, Zhang, Bek et Pfefferkorn gen. et spec. nov. (formerly Discinispora) from China, an ichnotaxon of a punch-and-sucking insect on Noeggerathialean spores
resolves10.2307/3546930Pollination, Angiosperm Speciation, and the Nature of Species Boundaries
resolves10.2307/2265575Generalization in Pollination Systems, and Why it Matters
resolves10.1007/s00114-009-0525-xDirect and indirect fossil records of megachilid bees from the Paleogene of Central Europe (Hymenoptera: Megachilidae)
resolves10.2307/2406479Wind Pollination in the Angiosperms: Evolutionary and Environmental Considerations
resolves10.1038/nature05857Pollinator shifts drive increasingly long nectar spurs in columbine flowers
resolves10.1080/002229301447853Thrips (Thysanoptera) pollination in Australian subtropical rainforests, with particular reference to pollination of<i>Wilkiea huegeliana</i>(Monimiaceae)
resolves10.2307/2666555Cycas Pranburiensis (Cycadaceae), A New Cycad from Thailand
resolves10.1007/BF00939177New details on the morphology of fossil onagraceous pollen grains
resolves10.1080/00173139609429083The Morphology of Pollen Tetrads and Viscin Threads in Some Tertiary,<i>Rhododendron</i>-Like Ericaceae
resolves10.1016/j.geobios.2004.05.003The first find of chrysomelids (Insecta: Coleopetra: Chrysomeloidea) from Callovian–Oxfordian Daohugou biota of China
The 81 references without a DOI — listed, not checked
no DOI — not checkedi0026-6493-97-4-469-Afonin1
no DOI — not checkedi0026-6493-97-4-469-Alvin1
no DOI — not checkedi0026-6493-97-4-469-Arnoldi1
no DOI — not checkedi0026-6493-97-4-469-Bequaert1
no DOI — not checkedi0026-6493-97-4-469-Billes1
no DOI — not checkedi0026-6493-97-4-469-Bino2
no DOI — not checkedi0026-6493-97-4-469-Bonhag1
no DOI — not checkedi0026-6493-97-4-469-Burdick1
no DOI — not checkedi0026-6493-97-4-469-Carafa1
no DOI — not checkedi0026-6493-97-4-469-Cockerell1
no DOI — not checkedi0026-6493-97-4-469-Crepet2
no DOI — not checkedi0026-6493-97-4-469-Dilcher2
no DOI — not checkedi0026-6493-97-4-469-Doludenko1
no DOI — not checkedi0026-6493-97-4-469-Fuchs1
no DOI — not checkedi0026-6493-97-4-469-Gouin1
no DOI — not checkedi0026-6493-97-4-469-Gratschev1
no DOI — not checkedi0026-6493-97-4-469-Grimaldi2
no DOI — not checkedi0026-6493-97-4-469-Grinfeld1
no DOI — not checkedi0026-6493-97-4-469-Grinfeld2
no DOI — not checkedi0026-6493-97-4-469-Grinfeld3
no DOI — not checkedi0026-6493-97-4-469-Hannemann1
no DOI — not checkedi0026-6493-97-4-469-Harris1
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no DOI — not checkedi0026-6493-97-4-469-Heddergott1
no DOI — not checkedi0026-6493-97-4-469-Holmes1
no DOI — not checkedi0026-6493-97-4-469-Jervis2
no DOI — not checkedi0026-6493-97-4-469-Kasab1
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no DOI — not checkedi0026-6493-97-4-469-Klavins1
no DOI — not checkedi0026-6493-97-4-469-Krassilov2
no DOI — not checkedi0026-6493-97-4-469-Krassilov5
no DOI — not checkedi0026-6493-97-4-469-Krassilov6
no DOI — not checkedi0026-6493-97-4-469-Krassilov7
no DOI — not checkedi0026-6493-97-4-469-Krenn1
no DOI — not checkedi0026-6493-97-4-469-Kristensen1
no DOI — not checkedi0026-6493-97-4-469-Labandeira8
no DOI — not checkedi0026-6493-97-4-469-Lutz1
no DOI — not checkedi0026-6493-97-4-469-MartinsNeto1
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no DOI — not checkedi0026-6493-97-4-469-Melander1
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no DOI — not checkedi0026-6493-97-4-469-Ren2
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no DOI — not checkedi0026-6493-97-4-469-Rudall1
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no DOI — not checkedi0026-6493-97-4-469-SantiagoBlay1
no DOI — not checkedi0026-6493-97-4-469-Schremmer1
no DOI — not checkedi0026-6493-97-4-469-Takeuchi1
no DOI — not checkedi0026-6493-97-4-469-Tang3
no DOI — not checkedi0026-6493-97-4-469-Thien2
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no DOI — not checkedi0026-6493-97-4-469-Vilesov1
no DOI — not checkedi0026-6493-97-4-469-Wckers1
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no DOI — not checkedi0026-6493-97-4-469-Wilson1
no DOI — not checkedi0026-6493-97-4-469-ZakaurRab1
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