Jason A. Dunlop
Biography:
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| Volume 2 | Article 6 | Page 1-9 | Download (.pdf) |
Fossil Focus: Xiphosura
by Jason A. Dunlop*1 Introduction: The Xiphosura are commonly known as horseshoe crabs because the front part of their bodies is horseshoe-shaped. They have sometimes been called king crabs, although this name is also used for a group of large … Continue reading
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How to Reference this Article: Dunlop, Jason A. 2012. Fossil Focus: Xiphosura. Palaeontology Online, Volume 2, Article 6, 1-9. |
| Volume 1 | Article 7 |
Fossil Focus: Arachnida
by Jason A. Dunlop*1 Introduction: Arachnida is one of the major arthropod groups. It includes spiders (Araneae), scorpions (Scorpiones), mites (Acari) and harvestmen (Opiliones), as well as a number of rarer and less familiar groups (Fig 1). The name Arachnida … Continue reading
| Volume 1 | Article 6 |
Fossil Focus: Chasmataspidida
by Jason A. Dunlop*1 Introduction: Chasmataspidida (Fig 1) are rare, extinct arthropods known only from the early to mid Palaeozoic Era. They are probably closely related to either xiphosurans (horseshoe crabs; Fig 2) or eurypterids (sea scorpions; Fig 1); some … Continue reading
| Volume 1 | Article 3 | Download (.pdf) |
Fossil Focus: Pycnogonida
by Jason A. Dunlop*1 Introduction: Pycnogonida, or sea spiders, are not true spiders at all. They are in fact a group of — probably rather primitive — marine arthropods, characterized by a small, slender body and in many cases by … Continue reading
| Volume 1 | Article 1 | Page 1-8 | Download (.pdf) |
Fossil Focus: Chelicerata
by Jason A. Dunlop*1 Introduction: Chelicerata is one of the main divisions of the arthropods, and essentially consists of arachnids and their closest relatives. The name was coined in 1901 by the Berlin-based zoologist Richard Heymons (Fig. 1). It means … Continue reading

