scholarly journals Annotated type catalogue of the continental fossil gastropods in the Staatliches Museum für Naturkunde Stuttgart, Germany

2016 ◽  
Vol 9 (1) ◽  
pp. 15-70 ◽  
Author(s):  
Rodrigo B. Salvador ◽  
Olaf Höltke ◽  
Michael W. Rasser ◽  
Dietrich Kadolsky
Keyword(s):  
Fossil Gastropods

Spionid bore hole Polydorichnus subapicalis new ichnogenus and ichnospecies: a new behavioral trace in gastropod shells

2007 ◽  
Vol 81 (6) ◽  
pp. 1466-1475 ◽  
Author(s):  
Makiko Ishikawa ◽  
Tomoki Kase
Keyword(s):  
Hermit Crab ◽  
Fossil Record ◽  
Biotic Interactions ◽  
The Philippines ◽  
Hermit Crabs ◽  
Selection Factors ◽  
New Criterion ◽  
Similar Site ◽  
Fossil Shell ◽  
Fossil Gastropods

Identification of tracemakers is of primary importance for evaluating the biotic interactions inferred from bore holes in fossil shell assemblages. Domicile bore holes in the subapical whorls of gastropods produced by spionid polychaete Dipolydora sp., supposed to be commensal with hermit crabs, are common in dead gastropod assemblages from deepwater habitats in the Philippines. These holes exhibit unique features and support a new criterion for the interpretation of nonpredatory borings in fossil gastropods. Diagnostic of these bore holes are: small circular to elliptical outer opening, the presence of weak dissolution of the columella beneath the bore hole, and the presence of a hollowed tube composed of detritus held together with mucus within some gastropod whorls anterior to the hole. The two selection factors of subapical whorls and elongate shells are supplementary criteria for recognition of these holes. Bore holes are recognized here in a deepwater gastropod assemblage from the upper Pliocene Shinzato Formation of Okinawa, Japan, and named Polydorichnus subapicalis n. igen. and isp. These holes are identical to modern examples exhibiting similar site and species selectivity. P. subapicalis has its oldest fossil record in the upper Miocene of the Philippines, was common in offshore assemblages from the Miocene onward, and is a good indicator of occupation by a hermit crab and for commensalism between polychaetes and hermit crabs.

An unusual pattern of divergence between two fossil gastropods: ecophenotypy, dimorphism, or hybridization?

Paleobiology ◽  
1992 ◽  
Vol 18 (1) ◽  
pp. 93-109 ◽  
Author(s):  
Dana H. Geary
Keyword(s):  
Genetic Basis ◽  
Pannonian Basin ◽  
Morphological Changes ◽  
Morphological Evolution ◽  
Single Species ◽  
Morphological Divergence ◽  
Temporal Dimension ◽  
Species Formation ◽  
Fossil Gastropods

The temporal dimension of fossil sequences provides a critical component to the study of intraspecific dynamics and species formation. Here I report on the branching and subsequent morphological evolution of two gastropods (Melanopsis fossilis and M. vindobonensis) from the Late Miocene of the Pannonian basin in eastern and central Europe. Although morphological divergence between species is rapid, intermediates between the two species co-occur with typical individuals for approximately 1 m.y. and then disappear. The long-term persistence of intermediates followed by their ultimate disappearance is a pattern that, to my knowledge, has not been previously observed.Distinguishing genetic from ecophenotypic influences on shell form in freshwater prosobranchs is difficult. Nevertheless, consideration of the temporal, geographic, lithologic, and paleoecologic patterns of this sequence suggests that the morphologic differences between M. fossilis and M. vindobonensis had some genetic basis. Whether these forms were initially morphs of a single species or two species with some hybridization between them is impossible to determine. In either case, the morphological changes that resulted in M. vindobonensis were rapid, but the attainment of complete isolation between M. fossilis and M. vindobonensis apparently did not occur until approximately 1 m.y. later.

scholarly journals Assessing Open-System Behavior of 14C in Terrestrial Gastropod Shells

Radiocarbon ◽  
2011 ◽  
Vol 53 (2) ◽  
pp. 325-335 ◽  
Author(s):  
Jason A Rech ◽  
Jeffrey S Pigati ◽  
Sophie B Lehmann ◽  
Chelsea N McGimpsey ◽  
David A Grimley ◽  
...  
Keyword(s):  
Trace Element ◽  
Open System ◽  
System Behavior ◽  
Lacustrine Deposits ◽  
Trace Element Chemistry ◽  
Midwestern Usa ◽  
Practical Limit ◽  
Central Illinois ◽  
Fossil Gastropods ◽  
Terrestrial Gastropod

In order to assess open-system behavior of radiocarbon in fossil gastropod shells, we measured the 14C activity on 10 aliquots of shell material recovered from Illinoian (~190–130 ka) and pre-Illinoian (~800 ka) loess and lacustrine deposits in the Midwestern USA. Eight of the 10 aliquots yielded measurable 14C activities that ranged from 0.25 to 0.53 percent modern carbon (pMC), corresponding to apparent 14C ages between 48.2 and 42.1 ka. This small level of open-system behavior is common in many materials that are used for 14C dating (e.g. charcoal), and typically sets the upper practical limit of the technique. Two aliquots of gastropod shells from the Illinoian-aged Petersburg Silt (Petersburg Section) in central Illinois, USA, however, yielded elevated 14C activities of 1.26 and 1.71 pMC, which correspond to apparent 14C ages of 35.1 and 32.7 ka. Together, these results suggest that while many fossil gastropods shells may not suffer from major (>1%) open-system problems, this is not always the case. We then examined the mineralogy, trace element chemistry, and physical characteristics of a suite of fossil and modern gastropod shells to identify the source of contamination in the Petersburg shells and assess the effectiveness of these screening techniques at identifying samples suitable for 14C dating. Mineralogical (XRD) and trace element analyses were inconclusive, which suggests that these techniques are not suitable for assessing open-system behavior in terrestrial gastropod shells. Analysis with scanning electron microscopy (SEM), however, identified secondary mineralization (calcium carbonate) primarily within the inner whorls of the Petersburg shells. This indicates that SEM examination, or possibly standard microscope examination, of the interior of gastropod shells should be used when selecting fossil gastropod shells for 14C dating.

Nomenclatural comments on and corrections of nomina of some non-marine fossil gastropods

Bionomina ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 123-139
Author(s):  
DIETRICH KADOLSKY
Keyword(s):  
New Species ◽  
Type Species ◽  
Nominal Species ◽  
Nomen Nudum ◽  
Marine Gastropods ◽  
New Synonym ◽  
Senior Synonym ◽  
Nomen Novum ◽  
Fossil Gastropods

Nomenclatural issues pertaining to selected non-marine gastropods of Cretaceous and Tertiary age are discussed and resolved as follows. [1] Viviparus hammeri (Defrance, 1825) is reinstated; Helicites viviparoides Schlotheim, 1820 is a nomen nudum, made available as Paludina viviparoides Bronn, 1848, a new objective synonym. [2] Viviparus frauenfeldi Le Renard, 1994 is a new objective synonym of Viviparus oulchyensis Wenz, 1919. [3] Lorus is proposed as a nomen novum for Liris Conrad, 1871 [nec Fabricius, 1804]. [3] Wesselinghia is proposed as a nomen novum for Longosoma Wesselingh & Kadolsky, 2006 [nec Hartman, 1944]. [4] Hydrobia incerta (Deshayes, 1862) is reinstated; Hydrobia antoni Le Renard, 1994 is a new objective synonym of this nomen. [5] The species Paludina frauenfeldi Hoernes, 1856 is designated as type species of Sarmata B. Dybowski & Grochmalicki, 1920. [6] The misidentified type species of Annulifer Cossmann, 1921, so far known as ‘Paludina protracta sensu Cossmann 1921, non Eichwald, 1850’, is fixed under Article 70.3 of the Code as understood by Cossmann (1921), and renamed Annulifer annulifer new species. [7] Pomatias turgidulus (Sandberger, 1872) is reinstated; P. turonicus Wenz, 1923 and Cyclostoma squamosum Peyrot, 1932 are its new objective synonyms. [8] Valvata inflata Sandberger, 1875 is reinstated; V. gaudryana Wenz, 1928 [nec Mortillet, 1863] is its new objective synonym. [8] Catinella? montana Pierce, new species, originally published as “[Succineidae] montana Pierce, 1992”, is made available by associating the species epithet with a generic nomen. [9] Proalbinaria subantiqua (d’Orbigny, 1850) is reinstated; its senior synonym Pupa antiqua Matheron, 1832 is a primary junior homonym of Pupa muscorum antiqua Eichwald, 1830. [10] The type species of Palaeostoa Andreae, 1884 is Pupa fontenayi Sandberger, 1871 by subsequent designation by Cossmann (1905), which has precedence over the designation of Clausilia crenata Sandberger, 1871 by Wenz (1923). [11] Palaeostoa elongata (Melleville, 1843), whose original combination was Pupa elongata, is a primary junior homonym of Pupa elongata Bouillet, 1836, an unused name for an unidentified nominal species; pending more information on the taxon at stake, maintenance of the existing usage is recommended. [12] Scalaxis columnella (Deshayes, 1863) is reinstated, with Scalaxis sinister Wenz, 1923 as its new synonym. [13] Eurystrophe olla (Serres, 1844) is reinstated, with Helix janthinoides Noulet, 1868 [nec Helix janthinoides Serres, 1829, a nomen nudum] as its new synonym.

Larval ecology and morphology in fossil gastropods

Palaeontology ◽  
2014 ◽  
Vol 57 (3) ◽  
pp. 479-503 ◽  
Author(s):  
Alexander Nützel
Keyword(s):  
Larval Ecology ◽  
Fossil Gastropods

Gastropod Evolutionary History

1985 ◽  
Vol 13 ◽  
pp. 157-173 ◽  
Author(s):  
Philip W. Signor
Keyword(s):  
Evolutionary History ◽  
Marine Invertebrates ◽  
Research Effort ◽  
Future Research ◽  
Ecological Diversity ◽  
Prospective Students ◽  
Ecological Diversification ◽  
History Of ◽  
Evolutionary Success ◽  
Fossil Gastropods

If taxonomic richness or ecological diversity defines evolutionary success, then the gastropods must be placed among the most successful clades of all time. Today, the gastropods are the most speciose class of fossilizable marine invertebrates. They have a rich fossil record extending nearly to the base of the Phanerozoic, documenting an almost uninterrupted taxonomic and ecological diversification (Figure 1). Yet the snails have been often overlooked as a focus of evolutionary or paleoecological study. Classic evolutionary studies of gastropods, for example Fisher et al.'s (1964) study of Athleta or Gould's (1969) work on Poecilozonites, indicate no inherent deficiencies in the taxon and suggest a simple lack of attention. The purpose of this paper is to summarize some of the major features of the history of gastropod evolution, to review problems in the analysis of fossil gastropods, and to reiterate some long-standing questions about the evolution and relationships of ancient snails. The goal is not only to provide a useful guide for non-specialists facing the prospect of lecturing on the beasts, but also to direct prospective students to problems perhaps worthy of their future research effort.

The origin of granite erratics in the Pleistocene Patella beach, Gower, South Wales

1985 ◽  
Vol 122 (3) ◽  
pp. 297-302 ◽  
Author(s):  
D. G. Jenkins ◽  
R. D. Beckinsale ◽  
D. Q. Bowen ◽  
J. A. Evans ◽  
G. T. George ◽  
...  
Keyword(s):  
Amino Acid ◽  
Trace Element ◽  
Trace Element Geochemistry ◽  
Element Geochemistry ◽  
South Wales ◽  
Fossil Gastropods

AbstractRare pebbles of granite have been discovered in the raised Patella beach at Butterslade, Gower, South Wales. Their petrography, trace element geochemistry and the Rb/Sr whole rock age of 55 ± 5 Ma confirm that they are derived from the Lundy granite which is about 49 km to the southwest of Gower. Amino acid analyses of fossil gastropods in the Patella beach have provided an age of 210000 years. Various hypotheses of transportation of pebbles from Lundy and Pembrokeshire to Butterslade are considered. Erratics from Pembrokeshire were probably transported by Pleistocene ice into the area while clasts of Lundy granite were moved by progradation of beach deposits northeastwards towards Gower during glacio-eustatic marine transgressions in the Pleistocene.

scholarly journals Fossil gastropods Campanile lachesis Bayan, 1870 from the upper Eocene of the Eastern Rhodopes (Bulgaria)

2021 ◽  
Vol 50 (1) ◽  
pp. 3-9
Author(s):  
Lidiya Kirilova ◽  
Ivan Ivanov
Keyword(s):  
Upper Eocene ◽  
Sandy Bottom ◽  
Rocky Substrate ◽  
The Subject ◽  
Eastern Rhodopes ◽  
The Village ◽  
Normal Salinity ◽  
Fossil Gastropods

The subject of this study is the description of eight specimens of fossil gastropods Campanile lachesis Bayan, 1870, family Campanilidae, from the fund of the Regional Museum of History in Kardzhali. They were found in the area of the village of Gorna Krepost, Kardzhali Municipality, at the eastern foot of the Archeological Complex Perperikon, in the upper Eocene (Priabonian) limestone layers of the so-called Beli Plast Rhyodacite Complex. The paleoecological traits of the present fauna give ground to infer that this was a very shallow reefal environment with a rocky substrate sandy bottom, overgrown with algae, and the water was warm, with normal salinity.

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