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Site history

  • 1, March, 2026 – Version 12 goes online with 400 illustrated species. There are now nearly 700 species in the database after field campaign in Baja California Sur between La Paz and Los Cabos and concentrating more on smaller specimens (below 10mm).
  • 1, November, 2025 – Version 11 goes online with 367 illustrated species (with 651 species in the database). I incorporated the Cardiidae monograph by Jan Johan ter Poorten (2024). New: on the distribution page are images of common or typical species of different coastal environments shown.
  • 1, October, 2025 – Reaching 650 species after re-examining the leftovers.
  • 7, March, 2025 – Version 10 goes online with 360 illustrated species (with 625 species in the database).
  • January, 2025 – Reaching 600 species after field campaign in Baja California Sur between La Paz and Los Cabos.
  • 1, June, 2024 – Version 9.0 goes online with 330 illustrated species (with nearly 600 species in the database). I have replaced some images. Rare species are complete now.
  • 1, January, 2024 – Version 8.0 goes online with 287 illustrated species (with 561 species in the database). I have replaced some images. Rare species are still incomplete.
  • 1, March, 2023 – Version 7.0 goes online with 280 illustrated species (with 550 species in the database). I have replaced some images. Rare species are still incomplete.
  • 1, June, 2022 – Version 6.0 goes online with 265 illustrated species (with 530 species in the database after another two field campaigns in Baja California). I have replaced some images. Rare species are not quite complete because of lacking (good) images.
  • 5, December, 2021 – Reaching 500 species after field campaign in Baja California Sur between Mulegé and Loreto.
  • 15, September, 2021 – Version 5.0 goes online with 230 illustrated species (with 484 species in the database). I have replaced several images. The new field guide by Gurgo Salice & Cáceres (2021) is not yet fully incorporated. Families with new species are marked with an asterisk on the taxonomy page.
  • July, 2021 – Reaching 450 species during the field campaign in Baja California Sur between La Paz and El Barrilito.
  • 15, March, 2021 – Reaching 400 species.
  • 1, January, 2021 – Version 4.0 goes online with 220 illustrated species (with nearly 400 species in the database). Very common to rare species are included.
  • 1, June, 2020 – Version 3.0 goes online with 200 illustrated species (with 385 species in the database). Very common to rare species are included. Navigation should be easier now because it is possible to return to the list of families at the taxonomy page from any species page. I have also incorporated more literature into the synonymy.
  • 15, February, 2020 – Reaching 350 species.
  • 1, February, 2020 – Version 2.0 goes online with 150 illustrated species (with nearly 350 species in the database). Not only occasional to very common species are included, also some rare species. New species – compared to version 1.0 – are marked with an asterisk on the family and genus pages. I have also incorporated the data of Bertsch & Aguilar Rosas (2016) into the synonymy. I am also grateful to friends who proposed some useful modifications.
  • 7, November, 2019 – Version 1.1 with replaced background.
  • 1, November, 2019 – Version 1.0 goes online with one hundred illustrated species. The selection was mainly controlled by the quality of the material. Common species have a wider range of preservation quality. Purchased specimens are usually well preserved. There are more gastropods than bivalves, because the latter are more difficult to determine, and both valves must be available for an image. Some common species are still lacking because of taxonomic problems I experience. – I am very grateful to colleagues who helped with the taxonomy and advice on how to take shell pictures.
  • 4, May, 2019 – Reaching 300 species.
  • February, 2019 – I decided that with 100 illustrated (occasional to very common) species the internet site will be made public.
  • December, 2018 – Start of imaging of more specimens with a light box.
  • 7, November, 2018 – Reaching 200 species.
  • November, 2018 – First ideas for an internet presentation.
  • December, 2017 – I started more systematic and more regular visits to the coast. Notes and images of 100 species were available from the below mentioned occasional trips between 2002 and 2017.
  • November, 2017 – Building up a database for the old collection material I still hold.
  • From autumn 2002 on I did occasional shell trips in Sonora and Baja California, but I never intensified this hobby. But I have got a background: I started collecting shells about 25 years before, but malacology became more and more a sideline since I grew up to a scientist in a different field. So we are talking here about taking up again loose ends.


March 2026 • Version 12