Jaekelopterus is a genus of predatory eurypterid, a group of extinct aquatic arthropods. Fossils of Jaekelopterus have been discovered in deposits of...

eurypterids, Acutiramus, Jaekelopterus and Pterygotus, are very similar to each other. Pterygotus is particularly similar to Jaekelopterus, from which it is...

the appendage of Jaekelopterus. An inclusive phylogenetic analysis with multiple species of Acutiramus, Pterygotus and Jaekelopterus is required to resolve...

includes the largest known arthropods ever to have lived. The largest, Jaekelopterus, reached 2.5 meters (8.2 ft) in length. Eurypterids were not uniformly...

one of the largest arthropods ever known, as large as the eurypterid Jaekelopterus rhenaniae, whose length is estimated at 2.33–2.59 metres (7 ft 8 in –...

nautiloid cephalopods such as Cameroceras and later eurypterids such as Jaekelopterus during the Ordovician and Silurian periods. The first vertebrate carnivores...

arthropods to have ever lived with some members of the family, such as Jaekelopterus and Acutiramus, exceeding 2 metres (6.6 ft) in length. Their fossilized...

However, Pentecopterus was overtaken by other eurypterids such as Jaekelopterus rhenaniae, the largest known arthropod with 2.5 metres (8 ft 2 in)....

Campylocephalus Carcinosoma Drepanopterus Eurypterus Hibbertopterus Hughmilleria Jaekelopterus Megalograptus Megarachne Mixopterus Onychopterella Pentecopterus Pterygotus...

this is significantly smaller than the largest eurypterid overall, Jaekelopterus, which could reach lengths of around 250 centimetres (8.2 ft), Hibbertopterus...

largest arthropod known to have existed is the eurypterid (sea scorpion) Jaekelopterus, reaching up to 2.5 m (8.2 ft) in body length, followed by the millipede...

eurypterine suborder, notably the largest known arthropod of all time, Jaekelopterus, at 230–260 centimetres (7.5–8.5 ft), hibbertopterids were far bulkier...

similar in size range Chasmataspis. The largest known eurypterid was Jaekelopterus rhenaniae at 2.5 m (8 ft 2 in) in length, which is also the largest...

well-developed chelae (claws). Although some pterygotid eurypterids, such as Jaekelopterus or Acutiramus grew to gigantic proportions, it is estimated that the...

Merrimerriwa Formation (Australia), extending known geographical range of Jaekelopterus into Gondwana. Braddy (2024) studies the life mode of carcinosomatoid...

appeared about 515 Ma. The largest known arthropod, the sea scorpion Jaekelopterus rhenaniae, has been found in estuarine strata from about 390 Ma. It...

other pterygotioids such as Slimonia acuminata with 100 cm (39 in) or Jaekelopterus rhenaniae and (potentially) Erettopterus grandis with 2.5 m (8.2 ft)...

hills, at Willwerath near Prüm, Rhineland-Palatinate, Germany. In it Jaekelopterus rhenaniae, a giant eurypterid was discovered. The Klerf Formation, comprising...

dwarfed by many of the members of its family (the Pterygotidae), such as Jaekelopterus rhenaniae at 2.5 metres (8 ft, the largest known arthropod) and Acutiramus...

Campylocephalus Carcinosoma Drepanopterus Eurypterus Hibbertopterus Hughmilleria Jaekelopterus Megalograptus Megarachne Mixopterus Onychopterella Pentecopterus Pterygotus...

Jaekelopterus, around 2.5 m-long eurypterid...

arthropods to have ever existed were eurypterids. The largest known species (Jaekelopterus rhenaniae) reached up to 2.5 m (8.2 ft) in length, about the size of...

eurypterids overall, rivalling the large pterygotid eurypterids (such as Jaekelopterus) in size. Other species of the genus were considerably smaller, with...

Fossil of Jaekelopterus, a pterygotioid. At a length of 2.5 meters, it is one of the largest arthropods to have ever lived....

fish and nautiloids. First of many modern groups, including tetrapods. Jaekelopterus, giant "sea scorpion". First amphibians, the Labyrinthodontia, the group...

Campylocephalus Carcinosoma Drepanopterus Eurypterus Hibbertopterus Hughmilleria Jaekelopterus Megalograptus Megarachne Mixopterus Onychopterella Pentecopterus Pterygotus...

marginally marine than those sections inhabited by Adelophthalmus. As Jaekelopterus and other some eurypterids, Parahughmilleria probably wandered in and...

Campylocephalus Carcinosoma Drepanopterus Eurypterus Hibbertopterus Hughmilleria Jaekelopterus Megalograptus Megarachne Mixopterus Onychopterella Pentecopterus Pterygotus...

estuarine to deltaic one, and other animals like the largest eurypterid, Jaekelopterus, are known from the same formation. Willwerathia was originally thought...

Eurypterina contains several famous giant eurypterids such as Pterygotus and Jaekelopterus, the Stylonurina gave rise to large forms as well, several larger than...