Papers by David R. Lindberg
Preliminary molecular phylogenetic relationships of Helminthoglypta land snails (Mollusca: Gastropoda: Helminthoglyptidae) from northern California and southern Oregon, USA
Archiv für Molluskenkunde International Journal of Malacology, 2021
Zoological Journal of the Linnean Society, 1997
Morphological (including ultrastructural) and developmental characters utilized in recent literat... more Morphological (including ultrastructural) and developmental characters utilized in recent literature are critically reviewed as the basis to reassess the phylogenetic relationships of gastropods. The purpose of this paper is to ...
Arctic, 1988
Two new species of patellogastropod limpets from the Miocene-Pliocene of Alaska are described-Put... more Two new species of patellogastropod limpets from the Miocene-Pliocene of Alaska are described-Putelloidu grudutus new species from the Unga Conglomerate Member of the Bear Lake Formation at Cape Aliaksin, Alaska Peninsula, southwestern Alaska, and Niveotecturu myrukeenue new species from the Yakataga Formation in the northeastern Gulf of Alaska. A third species from the Narrow Cape Formation of Kodiak Island may be referrable to Putelloidu sookensis Clark and Arnold, 1923, a species previously known only from Vancouver Island, Canada. These and other species of Patelloidinae dominated the northeastern Pacific patellogastropod fauna for over 60 m.y. The presence in Alaska of these three warm-water limpet species may be related to the middle Miocene warm-water event that is well documented elsewhere in the North Pacific. However, regional cooling during the late Neogene drove this predominantly tropical group from higher latitudes, leaving them poorly represented in the Holocene boreal fauna.
Morphological Variation of the Carinal Plate of the Stalked Barnacle Pollicipes polymerus Sowerby
Bulletin of the Southern California Academy of Sciences, 1980
On the Taxonomic Affinities of Collisella edmitchelli (Lipps) (Gastropoda: Acmaeidae) a Late Pleistocene Limpet from San Nicolas Island, California
Bulletin of the Southern California Academy of Sciences, 1978
The Paleontology Portal: An online resource meeting the needs a spectrum of learners
The Paleontology Portal website provides a central, interactive entry point to high-quality North... more The Paleontology Portal website provides a central, interactive entry point to high-quality North American paleontology resources on the Internet for multiple audiences: the research community, government and industry, K-16 students, and the general public. The Portal successfully blends research and education, pulling together information with reviewed and annotated website links for a wide variety of informal learners. Using web-based technology and relational databases, users can explore an interactive map and associated stratigraphic column to access information about particular geographic regions, geologic time periods, depositional environments, and representative taxa. Users are also able to search multiple museum collection databases using a single query form of their own design. Other features include highlights of famous fossil sites and assemblages and a fossil image gallery. Throughout the site, users find images and links to information specific to each time period or geographic region, including current research projects and publications, websites, on-line exhibits and educational materials, and information on collecting fossils. The next phase of development will target the development of resource modules on topics such as collection management and fossil preparation, appropriate for users ranging from the general public to professional paleontologists. Another initiative includes developing methods of personalizing the Portal to support exhibits at museums and other venues on geological history and paleontology. The Paleontology Portal, built by the UC Museum of Paleontology, is a joint project of the Society of Vertebrate Paleontology, the Paleontological Society, and the US Geological Survey, in collaboration with the Paleontological Research Institution, the Fort Worth Museum of Science and History, and the Denver Museum of Nature and Science, which serve as hubs for the project. Paleoportal serves as an effective model in two aspects: (1) providing access to a spectrum of reviewed resources from a single starting interface that enables users from novice to professional to access background-appropriate information, and (2) involvement of a wide range of stakeholders (professional societies, universities and museums, and individuals) in both concept development and management. The project is funded by the National Science Foundation under award no. 0234594
SUMMARY The position of scaphopods in molluscan phylogeny remains singularly contentious, with se... more SUMMARY The position of scaphopods in molluscan phylogeny remains singularly contentious, with several sister relationships supported by morphological and phylogenomic data: Scaphopoda þ Bivalvia (Diasoma), Scaphopoda þ Cephalopoda (Variopoda), and Scaphopoda þ Gastropoda. Nervous system architecture has contributed significant insights to reconstructing phylogeny in the Mollusca and other invertebrate groups, but a modern neurophylogenetic approach has not been applied to molluscs, hampered by a lack of clearly defined homologous characters that can be unequivocally compared across the radical body plan disparity among the living clades. We present the first three-dimensional reconstruction of the anterior nervous system of a scaphopod, Rhabdus rectius, using histological tomography. We also describe a new putative sensory organ, a paired and pigmented sensory mantle slit. This structure is restricted to our study species and not a general feature of scaphopods, but it forms an integral part of the description of the nervous system in R. rectius. It also highlights the potential utility of neuro-anatomical characters for multiple levels of phylogenetic inference beyond this study. This potential has not previously been exploited for the thorny problem of molluscan phylogeny. The neuroanatomy of scaphopods demonstrates a highly derived architecture that shares a number of key characters with the cephalopod nervous system, and supports a Scaphopoda þ Cephalopoda grouping.
Marine extinction risk shaped by trait-environment interactions over 500 million years
Global change biology, 2015
Perhaps the most pressing issue in predicting biotic responses to present and future global chang... more Perhaps the most pressing issue in predicting biotic responses to present and future global change is understanding how environmental factors shape the relationship between ecological traits and extinction risk. The fossil record provides millions of years of insight into how extinction selectivity (i.e., differential extinction risk) is shaped by interactions between ecological traits and environmental conditions. Numerous paleontological studies have examined trait-based extinction selectivity; however, the extent to which these patterns are shaped by environmental conditions is poorly understood due to a lack of quantitative synthesis across studies. We conducted a meta-analysis of published studies on fossil marine bivalves and gastropods that span 458 million years to uncover how global environmental and geochemical changes covary with trait-based extinction selectivity. We focused on geographic range size and life habit (i.e., infaunal vs. epifaunal), two of the most important...
Heterochrony in Gastropods
Topics in Geobiology, 1988
Science (New York, N.Y.), 2015
Marine taxa are threatened by anthropogenic impacts, but knowledge of their extinction vulnerabil... more Marine taxa are threatened by anthropogenic impacts, but knowledge of their extinction vulnerabilities is limited. The fossil record provides rich information on past extinctions that can help predict biotic responses. We show that over 23 million years, taxonomic membership and geographic range size consistently explain a large proportion of extinction risk variation in six major taxonomic groups. We assess intrinsic risk-extinction risk predicted by paleontologically calibrated models-for modern genera in these groups. Mapping the geographic distribution of these genera identifies coastal biogeographic provinces where fauna with high intrinsic risk are strongly affected by human activity or climate change. Such regions are disproportionately in the tropics, raising the possibility that these ecosystems may be particularly vulnerable to future extinctions. Intrinsic risk provides a prehuman baseline for considering current threats to marine biodiversity.
Mollusks are the most morphologically disparate living animal phylum, they have diversified into ... more Mollusks are the most morphologically disparate living animal phylum, they have diversified into all habitats, and have a deep fossil record. Monophyly and identity of their eight living classes is undisputed, but relationships between these groups and patterns of their early radiation have remained elusive. Arguments about traditional morphological phylogeny focus on a small number of topological concepts but often without regard to proximity of the individual classes. In contrast, molecular studies have proposed a number of radically different, inherently contradictory, and controversial sister relationships. Here, we assembled a dataset of 42 unique published trees describing molluscan interrelationships. We used these data to ask several questions about the state of resolution of molluscan phylogeny compared to a null model of the variation possible in random trees constructed from a monophyletic assemblage of eight terminals. Although 27 different unique trees have been proposed from morphological inference, the majority of these are not statistically different from each other. Within the available molecular topologies, only four studies to date have included the deep-sea class Monoplacophora; but 36.4% of all trees are not significantly different. We also present supertrees derived from 2 data partitions and 3 methods, including all available molecular molluscan phylogenies, which will form the basis for future hypothesis testing. The supertrees presented here were not constructed to provide yet another hypothesis of molluscan relationships, but rather to algorithmically evaluate the relationships present in the disparate published topologies. Based on the totality of available evidence, certain patterns of relatedness among constituent taxa become clear. The internodal distance is consistently short between a few taxon pairs, particularly supporting the relatedness of Monoplacophora and the chitons, Polyplacophora. Other taxon pairs are rarely or never found in close proximity, such as the vermiform Caudofoveata and Bivalvia. Our results have specific utility for guiding constructive research planning in order to better test relationships in Mollusca as well as other problematic groups. Taxa with consistently proximate relationships should be the focus of a combined approach in a concerted assessment of potential genetic and anatomical homology, while unequivocally distant taxa will make the most constructive choices for exemplar selection in higher-level phylogenomic analyses.
The Paleontology Portal: An online resource meeting the needs a spectrum of learners
The Paleontology Portal website provides a central, interactive entry point to high-quality North... more The Paleontology Portal website provides a central, interactive entry point to high-quality North American paleontology resources on the Internet for multiple audiences: the research community, government and industry, K-16 students, and the general public. The Portal successfully blends research and education, pulling together information with reviewed and annotated website links for a wide variety of informal learners. Using web-based technology
The ontogeny of the lower reproductive tract of the landsnail Helix aspersa (Gastropoda: Mollusca)
Organisms Diversity & Evolution, 2013
Organisms Diversity & Evolution, 2014
Sea level change influences biodiversity of endemic cave fauna to varying degrees. In anchialine ... more Sea level change influences biodiversity of endemic cave fauna to varying degrees. In anchialine systems, a marine layer flows under less saline layers, each with differing associated fauna. We assess the role of present and historic (last glacial maximum -18,000 years ago) distance from the ocean in determining species richness and phylogenetic diversity patterns for two groups of anchialine crustaceans: the marine-restricted Remipedia and a subset of groundwaterinhabiting atyid shrimp with greater tolerance for salinity variation. We calculated species richness and phylogenetic diversity per cave based on records of remipede and atyid diversity at 137 locations in the Yucatán Peninsula, Caribbean, Australia, and the Canary Islands. After calculating the distance of each cave's surface opening from the past and present shoreline, we evaluated how species richness and phylogenetic diversity change with distance from the present and historic ocean. Remipede species richness and phylogenetic diversity declined rapidly with distance from the ocean. Ninety-five percent of the remipedes surveyed were located within 7 km of the present ocean and 18 km of the historic ocean. Atyid species richness and phylogenetic diversity declined more slowly with distance from the ocean than that of remipedes. Atyid shrimp were also distributed over a broader range: 95 % were located within 100 km of the present ocean and 240 km of the historic ocean. Our findings indicate that coastal geomorphology and salinity tolerance influence a clade's distribution with respect to its distance from the ocean. We also report a possible latent response to sea level change.
M. J. James, (ed.) 1991. Galapagos Marine Invertebrates. Taxonomy, Biogeography, and Evolution in Darwin's Islands. Topics in Geobiology Series, Volume 8. xiv + 474 pp. New York, London: Plenum Press. Price US $95.00 (hard covers). ISBN 0 306 43794 5
Geological Magazine, 1995
Evolution, 2002
Cell-lineage trees may contain information about spiralian phylogeny, as proposed by . Here we di... more Cell-lineage trees may contain information about spiralian phylogeny, as proposed by . Here we discuss this possibility further and conclude that the cell-division pattern must be known in greater detail and the coding methods refined before a possible phylogenetic signal can be identified.
Integrating Developmental Evolutionary Patterns and Mechanisms: A Case Study Using the Gastropod Radula
Evolution, 1999
ABSTRACT
Exploring the Consequences of Species Interactions Through the Assembly and Disassembly of Food Webs: A Pacific-Atlantic Comparison
Bulletin of Marine Science, 2013
Seven species of land mollusk (2 slugs, 5 snails) were collected on Attu in July 1979. Three are ... more Seven species of land mollusk (2 slugs, 5 snails) were collected on Attu in July 1979. Three are circumboreal species, two the fauna was assembled overwater since deglaciation, perhaps within the last 10 OOO years. Mollusk faunas from Kamchatka to are amphi-arctic (Palearctic and Nearctic but not circumboreal), and two are Nearctic. Barring chance survival of mollusks in local refugia, southeastern Alaska all have a Holarctic component. A Palearctic component present on Kamchatka and the Commander Islands is absent from the Aleutians, which have a Nearctic component that diminishes westward. This pattern is similar to that of other soil-dwelling invertebrate groups. RESUM& Sept espbces de mollusques terrestres (2 limaces et 5 escargots) furent prklevkes sur I'ile d' Attu en juillet 1979. Trois sont des espbces circomborkales, deux amphi-arctiques (Palkarctiques et Nkarctiques mais non circomborkales), et deux Nkarctiques. Si I'on excepte la survivance de mollusques due au hasard dans des refuges locaux, cette faune s'est retrouvke de part et d'autre des eaux depuis la dkglaciation, peut-&re depuis les derniers 10 OOO ans. Les faunes de mollusques de la pkninsule de Kamchatkajusqu'au sud-est de 1'Alaska on toutes une composante Holarctique. Une composante Palkarctique prksente sur le Kamchatka et les iles Commandeur ne se retrouve pas aux Alkoutiennes, oil la composante Nkarctique diminue vers I'ouest. Ce patron est similaire il celui de d'autres groupes d'invertkbrks terrestres . Traduit par Jean-Guy Brossard, Laboratoire d'ArchCologie de I'Universitk du Qukbec il Montrkal.
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Papers by David R. Lindberg