Hannes Löser [syn. Loeser, Loser]

Universidad Nacional Autónoma de México
Instituto de Geología
Estación Regional del Noroeste

Hermosillo, Sonora, México
Phone +52 (662) 217-50-19


Attending a meeting (rare enough)

[The provider gmx.net uses a very restrictive SPAM filter; please give therefore clear information in the 'subject' field. Mails with 'Hi' or 'Hello' in the subject line may get delayed or lost. Please avoid mails which have only an attachment without any message. Please, please, please do not send your big fat papers as PDF files without request. I appreciate very much to be updated about your research but the mail account is limited in size and your mail may congest the account completely. ]

Postal address (books, samples) : please ask! If you send any material to Mexico, my university charges me import taxes without asking before!

Research topics

  • Post-Palaeozoic coral taxonomy, systematics, evolution, distribution, diversity, and biostratigraphy
  • Database application and data visualization in palaeontology
  • Taxonomy and biostratigraphy of nerineid gastropods (not much progress because of too many coral faunas sent to me)
  • Taxonomy of Early Cretaceous Orbitolinid Foraminifera (Data base)
  • Cretaceous ... regional geology, palaeontology, stratigraphy and facies

Research subjects

  • Description of Mesozoic/Cenozoic coral faunas from here, there and everywhere
  • Taxonomic revision of various Cretaceous coral families down to the genus level
  • Taxonomic revision of various Cretaceous coral genera down to the species level

Works in progress

Publications on Cretaceous coral faunas and revisions of coral families/genera from all over the world are always in preparation, submitted and in press. These are the topics I am currently working on:
  • In July 2019, the revision of the corals of the area of Rußbach/Gosau in Austria (Coniacian/Santonian) was published. This is a 370 pages book with approximately 1200 figures encompassing the description and illustration of 350 coral species (more information about the project in German at http://www.korallen-kreide.de). Most species are illustrated using thin sections. Morphometric data will be provided (new for that area). There is an abridged version in the English language as PDF free of cost.
  • The Hauterivian coral fauna of the Paris Basin (France) is envisaged as a monographic work. Large "monolithic" books became more important to me during the last years.
  • Albian/Cenomanian coral faunas world-wide, mainly France, Germany, Mexico, Spain (results of the UNAM DGAPA projekt IN101111).
  • Early Cretaceous coral faunas from Mexico (Sonora, Puebla, Baja California). Partly carried out by my students.
  • Various coral faunas reaching from the Berriasian to Cenomanian of Spain. Much interesting and new material.
  • Late Jurassic and early Late Cretaceous from Portugal.
  • Revision of type material from the MGSB collection in Barcelona is published step by step.
  • Late Cretaceous to Oligocene coral faunas of Costa Rica.
  • Late Jurassic corals from Hungary (Project Comparative study of Late Jurassic faunas from the Bakony Mts: their palaeobiology and bearing on the Jurassic/Cretaceous boundary supported by the Hungarian National Research, Development and Innovation office)

People often ask me whether I can determine coral samples for them. At least I can try. Since the amount of the samples increased in the last years, I kindly ask you to lookup these instructions. - Other persons ask me whether we can publish a coral fauna together. Of course we can. Please lookup the procedure.

Publications (published or in press)

Do not hesitate to ask for PDFs. There are no reprints anymore and I do not send PDFs. You have to ask. PDFs of free articles are linked in the above pages.

Software development

  • PaleoTax/Database – database to record taxonomic, geographic, stratigraphic data. Newest version 2.5 was published May 2021.
  • PalCol – application for palaeontological collections. Service Release 8 was published in May 2021.
  • Oliva – application for extant marine material, designated for mollusks. Service Release 2 was published in May 2021. It comes with a detailed manual.
  • PaleoTax/Map – PaleoTax GIS extension to plot localities or taxa
  • PaleoTax/Graph – PaleoTax Graphic extension to visualize results of data analysis. Version 2.3 from May 2021 was improved, and the manual was extended.
  • PaleoTax/Measure – program to measure two dimensional fossils (and count things like septa or pores or leafs) and calculate average, standard deviation, first interval etc. - Current version is 1.7 that was released in May 2020 including a new manual. There is also a manual in the German language for version 1.6.


  • Invertebrate palaeontology
  • Micropalaeontology and microfacies
  • Research methods in palaeontology (short course)
  • Databasing in palaeontology (short course)
  • Scleractinian coral morphology, methods, taxonomy (short course)
  • Database programming (short course)


  • Paleontología de invertebrados
  • Micropaleontología y ambiente
  • Metodología de investigacón en paleontología (curso corto)
  • Base de datos en paleontología (curso corto)
  • Escleractinias - morfología, métodos, taxonomía (curso corto)
  • Programación de base de datos (curso corto)
NEW: Curso corto (20-30h) en línea : Manejo de la base de datos PaleoTax. A partir de 9 de Agosto de 2021.


I work with students (B.S., M.S., PhD) on the following topics
  • Fossil and extant coral taxonomy
  • Extant marine mollusks (taxonomy, morphometry)
  • Invertebrate palaeontology and micropalaeontology
  • Biostratigraphy
  • Statistics in biology, palaeontology and geology
Students need to come to Hermosillo, even if only a short time.


Trabajo con estudiantes (Licenciatura, Maestría, Doctorado) en los campos siguentes
  • Taxonomía de corales fósiles y recientes
  • Moluscos marinos (taxonomía, morfometría)
  • Paleontología de invertebrados y micropaleontología
  • Bioestratigrafía
  • Estadística en biología, paleontología y geología
Foráneos tienen que venir a Hermosillo, al menos un tiempo.
List of students - who have worked / are working with me, and on what.

Informaciones para estudiantes (estancia de investigación, práctica profesional, servicio social, tesis).


Where we can probably see next time ...

  • At meetings not so much anymore ....
  • ... but always in the backyard of my house in Hermosillo.

[25 July 2021]