Introduction: Nicolaus Steno and earth science in early modern Italy by Stefano Dominici, Gary D. Rosenberg

“…For participants to the 2019 gathering, the Museum of Natural History of the University of Florence, hosting some of Steno's geological specimens, and the region of Tuscany itself, formed the perfect location to discuss the phenomena that Steno had observed from 1666-1668, the motivations for his research, the methodology of his discovery and, generally stated, the European scientific context which informed his inquiry. …”
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Thliphthisa sapphus (Rubiaceae, Rubieae), a new species from Lefkada (Ionian Islands, Greece) and its ecological position by Walter Gutermann, Tae-Soo Jang, Arndt Kästner, David Prehsler, Dieter Reich, Andreas Berger, Ruth Flatscher, Christian Gilli, Markus Hofbauer, Margarita Lachmayer, Ruth Sander, Michaela Sonnleitner, Ladislav Mucina

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A new species of Metafruticicola (Gastropoda, Hygromiidae) from the Aegean Archipelago and new anatomical and distributional data on some congeneric species by Eleftherios Bitzilekis, Katerina Vardinoyannis, Moisis Mylonas

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Cetacean records along São Paulo state coast, Southeastern Brazil by Marcos César de Oliveira Santos, Salvatore Siciliano, André Fabiano de Castro Vicente, Fernando Siqueira Alvarenga, Émerson Zampirolli, Shirley Pacheco de Souza, Andréa Maranho

“…Scattered data from scientific publications, skeletal remains in museums, photographs and articles from newspaper files, universities and aquaria have been organised and updated since 1993. …”
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