Hi Rod,
that has been reported many times. The species API does NOT return type specimen, although the URL suggests that. It did so in the beginnings, hence the URL. 
It duplicated the occurrence method and conflated the type species responses for genus and higher taxa, so we ended up removing all type specimen responses and now only use it to return type species names. There are several threads about this in this mailing list already. To get the types for the species call:
http://api.gbif.org/v1/occurrence/search?taxonKey=7424919&typeStatus=*

Changing the URL would break backwards compatability, but this is one URL I really would like to see renamed as it consistently causes confusion.

Markus



On 05 Dec 2016, at 16:01, Roderic Page <Roderic.Page@glasgow.ac.uk> wrote:

Not sure if I’ve reported this before. The call to getting type specimens for a species consistently fails.

For example, http://www.gbif.org/species/7424919 has a holotype specimen, but the API call http://api.gbif.org/v1/species/7424919/typeSpecimens returns no records.

Regards,

Rod


---------------------------------------------------------
Roderic Page
Professor of Taxonomy
Institute of Biodiversity, Animal Health and Comparative Medicine
College of Medical, Veterinary and Life Sciences
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