Pachydiscus riccardi Macellari 1986 (ammonite)

Cephalopoda - Ammonitida - Pachydiscidae

Alternative combination: Pachydiscus (Pachydiscus) riccardi

Full reference: C. E. Macellari. 1986. Late Campanian-Maastrichtian ammonite fauna from Seymour Island (Antarctic Peninsula). The Paleontological Society Memoir 18:1-59

Belongs to Pachydiscus according to C. P. Consoli and J. D. Stilwell 2005

See also Macellari 1986

Sister taxa: Pachydiscus (Neodesmoceras), Pachydiscus (Pachydiscus), Pachydiscus ashlandicus, Pachydiscus averilli, Pachydiscus epiplectus, Pachydiscus excelsus, Pachydiscus flexuosus, Pachydiscus gollevillensis, Pachydiscus hauthali, Pachydiscus henleyensis, Pachydiscus levyi, Pachydiscus merriami, Pachydiscus naumanni, Pachydiscus neubergicus, Pachydiscus oregonensis, Pachydiscus patagonicus, Pachydiscus peramplus, Pachydiscus precolligatus, Pachydiscus stallauensis, Pachydiscus steinmanni, Parapachydiscus arionis, Parapachydiscus coalingensis, Parapachydiscus oceanus, Parapachydiscus eurydice, Pachydiscus (Parapachydiscus) gardneri, Parapachydiscus hera, Parapachydiscus hermes, Parapachydiscus panochensis, Parapachydiscus parahybensis, Parapachydiscus albuquerquei, Pachydiscus (Parapachydiscus) woodringi, Parapachydiscus gabbi, Parapachydiscus reedsi, Parapachydiscus stanislausensis, Parapachydiscus poseidon, Parapachydiscus brasiliensis, Parapachydiscus psyche, Parapachydiscus williamsoni, Parapachydiscus orpheus, Parapachydiscus peninsularis, Parapachydiscus perseus, Parapachydiscus endymion, Parapachydiscus bruneti, Parapachydiscus euzebioi, Parapachydiscus cortinaensis, Parapachydiscus gettyi, Parapachydiscus catarinae, Parapachydiscus sumneri, Parapachydiscus athena, Parapachydiscus abbotti, Parapachydiscus bidwelli, Joaquinites fascicostatum

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell diameter 121.2

Distribution:

• Cretaceous of Antarctica (24 collections), New Zealand (1)

Total: 25 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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