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Order of arthropods (fossil)
Eurypterids, often informally called sea scorpions, are a group of extinct marine arthropods that form the order Eurypterida. The earliest known eurypterids
Eurypterid
Extinct genus of eurypterid
Megarachne is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of Megarachne have been discovered in deposits of Late Carboniferous
Megarachne
Extinct genus of arthropods
Hibbertopterus is a genus of eurypterid, a group of extinct marine arthropods. Fossils of Hibbertopterus have been discovered in deposits ranging from
Hibbertopterus
This list of eurypterid genera is a comprehensive listing of all genera that have ever been included in the order Eurypterida, excluding purely vernacular
List_of_eurypterid_genera
Extinct genus of arthropods
Carcinosoma (meaning "crab body") is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of Carcinosoma are likely restricted to deposits
Carcinosoma
Extinct genus of sea scorpions
Eurypterus (/jʊəˈrɪptərəs/ yoo-RIP-tər-əs) is an extinct genus of eurypterid, a group of organisms commonly called "sea scorpions". The genus lived during
Eurypterus
Subphylum of arthropods
among many others), as well as a number of extinct lineages, such as the eurypterids (sea scorpions) and chasmataspidids. Chelicerata split from Mandibulata
Chelicerata
Family of eurypterids
genus Adelophthalmus, meaning "no obvious eyes") is a superfamily of eurypterids, an extinct group of aquatic arthropods. Adelophthalmoidea is classified
Adelophthalmoidea
Extinct genus of arthropods
Pentecopterus is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils have been registered from the Darriwilian age of the Middle Ordovician
Pentecopterus
Extinct genus of arthropods
Megalograptus is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of Megalograptus have been recovered in deposits of Katian (Late
Megalograptus
Extinct genus of eurypterid
Pterygotus is an extinct genus of giant predatory eurypterid, a group of extinct aquatic arthropods. Fossils of Pterygotus have been discovered in deposits
Pterygotus
Genus of arthropods (fossil)
Adelophthalmus is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of Adelophthalmus have been discovered in deposits ranging in
Adelophthalmus
Extinct Devonian genus of Eurypterida
Jaekelopterus is an extinct genus of eurypterid, a group of extinct aquatic arthropods. Fossils of Jaekelopterus have been discovered in deposits of Middle
Jaekelopterus
This timeline of eurypterid research is a chronologically ordered list of important fossil discoveries, controversies of interpretation, and taxonomic
Timeline of eurypterid research
Timeline_of_eurypterid_research
Extinct genus of arthropods
(ónyx), "claw", and πτερόν (pteron), "wing") is a genus of predatory eurypterid ("sea scorpion"), an extinct group of aquatic arthropods. Fossils of Onychopterella
Onychopterella
Extinct genus of scorpions
extinct genus of scorpions known from the Silurian-age Gutterford Burn Eurypterid bed, in the Pentland Hills in Scotland. It is currently considered the
Dolichophonus
Extinct family of eurypterids
from the type genus Pterygotus, meaning "winged one") is a family of eurypterids, an extinct group of aquatic arthropods. They were members of the superfamily
Pterygotidae
Suborder of eurypterid
two suborders of eurypterids, an extinct group of chelicerate arthropods commonly known as "sea scorpions". Eurypterine eurypterids are sometimes informally
Eurypterina
Extinct genus of arthropods
Campylocephalus is a genus of eurypterid, a group of extinct aquatic arthropods. Fossils of Campylocephalus have been discovered in deposits ranging from
Campylocephalus
Extinct genus of sea scorpions
Eusarcana (meaning "true flesh") is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of Eusarcana have been discovered in deposits
Eusarcana
Third period of the Paleozoic Era
Reserve, Dudley UK Eurypterus, a common Upper Silurian eurypterid Pterygotus was a giant eurypterid that had a nearly cosmopolitan distribution (reconstruction
Silurian
Extinct genus of arthropods
Slimonia is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of Slimonia have been discovered in deposits of Silurian age in South
Slimonia
Extinct genus of sea scorpions
Hunanopterus is a genus of eurypterid, an extinct group of aquatic arthropods. The genus contains one species, the type species H. wangi from the Silurian
Hunanopterus
Extinct suborder of arthropods
Stylonurina is one of two suborders of eurypterids, a group of extinct arthropods commonly known as "sea scorpions". Members of the suborder are collectively
Stylonurina
Extinct genus of arthropods
Salteropterus is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of Salteropterus have been discovered in deposits of Late Silurian
Salteropterus
originally described as a eurypterid, and was briefly mentioned as such in several accounts of North American eurypterids, though often regarded as dubious
Eurypterella
Order of arthropods
characters between chasmataspidid and eurypterid, but unlike the fused first and second operculum pair of eurypterid, the two operculum pairs seems to be
Chasmataspidida
Second period of the Paleozoic Era
bizarre spines and nodules to defend against predators such as primitive eurypterids and nautiloids while other trilobites such as Aeglina prisca evolved
Ordovician
Extinct genus of Devonian organisms
Strobilopterus is a genus of prehistoric eurypterid of the family Strobilopteridae. The genus contains four species, two from the Devonian of Wyoming,
Strobilopterus
Rhineland-Palatinate state agency
Directorate at Koblenz, who is an expert in prehistoric sea scorpions of the eurypterid order, co-authored a study with Andrew Rozenfeldz of Queensland Museum
Rhineland-Palatinate General Directorate for Cultural Heritage
Rhineland-Palatinate_General_Directorate_for_Cultural_Heritage
Extinct genus of arthropods
Acutiramus is a genus of giant predatory eurypterid, an extinct group of aquatic arthropods. Fossils of Acutiramus have been discovered in deposits of
Acutiramus
Extinct family of arthropods
type genus Hibbertopterus, meaning "Hibbert's wing") is a family of eurypterids, an extinct group of aquatic arthropods. They were members of the superfamily
Hibbertopteridae
Fossil genus of arthropod
Archopterus is a genus of eurypterid in the family Pittsfordipteridae, represented by one species. It was discovered in the Wenchang Formation of Tianfucun
Archopterus
Extinct family of arthropods
Waeringopteridae is a family of eurypterids, an extinct group of aquatic arthropods. The Waeringopteridae is the only family classified as part of the
Waeringopteridae
Fossil of the Silurian-Late Devonian eurypterid ("sea scorpion") Drepanopterus
List of the Paleozoic life of West Virginia
List_of_the_Paleozoic_life_of_West_Virginia
Geologic formation in South Africa
The Waaipoort Formation is a geologic formation in South Africa. It preserves fossils dating back to the Visean, in the Carboniferous period. The Waaipoort
Waaipoort_Formation
Extinct genus of arthropods
Mixopterus is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of Mixopterus have been discovered in deposits from Late Silurian
Mixopterus
Extinct genus of arthropods
genus of prehistoric eurypterid classified as part of the family Hardieopteridae. Hallipterus was a gigantic Hardieopterid eurypterid. Though some previous
Hallipterus
Genus of extinct arthropods
Hughmilleria is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of Hughmilleria have been discovered in deposits of the Silurian
Hughmilleria
Topics referred to by the same term
Sea scorpion may refer to: Eurypterids, extinct arthropods in the order Eurypterida Some fish in the family Cottidae, such as: Long-spined sea scorpion
Sea_scorpion
Extinct family of arthropods
from the type genus Carcinosoma, meaning "crab body") is a family of eurypterids, an extinct group of aquatic arthropods. They were members of the superfamily
Carcinosomatidae
Extinct superfamily of arthropods
Mycteropoidea is an extinct superfamily of eurypterids, an extinct group of chelicerate arthropods commonly known as "sea scorpions". It is one of four
Mycteropoidea
1989 American film by Sean S. Cunningham
defend their base against the attacks of a sea monster (possibly a giant eurypterid). The film stars Greg Evigan, Taurean Blacque, Nancy Everhard, Cindy Pickett
DeepStar_Six
Extinct genus of arthropods
Woodwardopterus is a genus of prehistoric eurypterids, colloquially known as sea scorpions, classified as part of the family Mycteroptidae. The genus
Woodwardopterus
Extinct superfamily of eurypterids
the type genus Pterygotus, meaning "winged one") is a superfamily of eurypterids, an extinct group of aquatic arthropods. Pterygotioids were the most
Pterygotioidea
Silurian geologic formation in Ghat, Libya
Plotnick, 1999 Plotnick, R. E (1999), Habitat of Llandoverian-Lochkovian eurypterids, in A. J. Boucot, J. D. Lawson (eds.), Paleocommunities - a case study
Acacus_Sandstone
Ancient Greek galley
initial estimates. Hellenistic-era warships Pentecopterus, a genus of eurypterid named after the penteconter. Entry πεντηκόντορος at LSJ penteconter, in
Penteconter
Extinct genus of arthropods
Pruemopterus is a genus of eurypterid, an extinct group of aquatic arthropods. The type and only species of Pruemopterus, P. salgadoi, is known only from
Pruemopterus
Extinct genus of arthropods
Moselopterus is a genus of prehistoric eurypterid from the Devonian period in Europe. The genus contains two species, M. ancylotelson from Germany and
Moselopterus
Extinct genus of Eurypterid
Barusopterus is a genus of strobilopterid eurypterid that lived in Indiana, US during the Silurian period. This genus contains a single species, Barusopterus
Barusopterus
Extinct genus of arthropods
Erettopterus is a genus of large predatory eurypterid, an extinct group of aquatic arthropods. Fossils of Erettopterus have been discovered in deposits
Erettopterus
evolution of eurypterid body size is published by Ruebenstahl et al. (2024), who find that giant size evolved independently in different eurypterid lineages
2024 in arthropod paleontology
2024_in_arthropod_paleontology
Life restoration of the Silurian eurypterid ("sea scorpion") Dolichopterus
List of the Paleozoic life of Maryland
List_of_the_Paleozoic_life_of_Maryland
humid evergreen forests. Wang et al. (2025) revise Devonian pterygotid eurypterids from the Xiaxishancun Formation (Yunnan, China) and introduce a new nomenclature
2025 in arthropod paleontology
2025_in_arthropod_paleontology
Geological formation in Scotland
Slimonia acuminata A slimonid eurypterid. Erettopterus bilobus A pterygotid eurypterid. Pterygotus lanarkensis A pterygotid eurypterid. Carcinosoma scorpioides
Kip_Burn_Formation
Fifth period of the Paleozoic Era
freshwater eurypterid from South America that was originally misidentified as a spider Adelophthalmus was the only genus of eurypterine eurypterid that survived
Carboniferous
Phylum of invertebrates with jointed exoskeletons
dependent on water. Around the same time the aquatic, scorpion-like eurypterids became the largest ever arthropods, some as long as 2.5 m (8 ft 2 in)
Arthropod
Extinct family of crustaceans
from the first or second thoracopods. They were originally considered eurypterids, but later their possible relationship with decapods was established
Angustidontidae
Third and final series of the Permian
epoch. One of the last members of this clade was Kathwaia capitorosa. Eurypterids were nearly extinct by this point, consisting of the possibly Lopingian
Lopingian
Extinct genus of Devonian organisms
Stylonurus is a genus of prehistoric eurypterid of the family Stylonuridae. The genus contains three species: Stylonurus powriensis from the Devonian of
Stylonurus
Extinct genus of arthropods
Dorfopterus is a genus of extinct invertebrate, possibly an eurypterid. Only one fossil of the single and type species, D. angusticollis, has been discovered
Dorfopterus
Extinct genus of scorpions
PMC 11627080. PMID 39655336. Braddy, S. J. (2024). "Carcinosomatoid eurypterid palaeoecology and phylogeny: ichnology and palaeocommunities". Neues Jahrbuch
Brontoscorpio
Geologic formation in Quebec, Canada
impact structure in Quebec Indian Point Formation at Fossilworks.org Eurypterid-associated biota of Indian Point Fmn. in Gaspe National Park at Fossilworks
Indian_Point_Formation
Extinct family of sea scorpions
Moselopteridae are an extinct family of eurypterids. It is the only family classified as part of the superfamily Moselopteroidea, and contains three genera:
Moselopteridae
Extinct genus of arthropods
Tylopterella is a genus of eurypterid, a group of extinct aquatic arthropods. Only one fossil of the single and type species, T. boylei, has been discovered
Tylopterella
Extinct genus of cartilaginous fish
the remains of several other fish species, arthropods such as large eurypterids, and large amounts of fossilized plant material. The Battery Point and
Doliodus
Taxonomical clade
the Winneshiek Lagerstätte of Iowa (USA) reveals the ground plan of eurypterids and chasmataspidids". The Science of Nature. 102 (9–10): 63. Bibcode:2015SciNa
Dekatriata
Family of arthropods (fossil)
Megalograptidae are a family of eurypterids, an extinct group of aquatic chelicerate arthropods commonly known as "sea scorpions". The megalograptids
Megalograptidae
Extinct superfamily of arthropods
The Rhenopteroidea is an extinct superfamily of eurypterids, an extinct group of chelicerate arthropods commonly known as "sea scorpions". The superfamily
Rhenopteroidea
Geologic formation in Australia
Holloway, 1983 Plotnick, R. E (1999), Habitat of Llandoverian-Lochkovian eurypterids, in A. J. Boucot, J. D. Lawson (eds.), Paleocommunities - a case study
Melbourne_Formation
Gorge in Western Australia
that contains fossils of eurypterids, representing some of the earlier fossil evidence of land animals. Fossilised eurypterid tracks are common in the
Murchison_River_Gorge
Mouthparts of spiders and horseshoe crabs
three-segmented chelicerae Isolated fossil chelicera of a pterygotid eurypterid, Acutiramus cummingsi Having three-segmented chelate chelicerae is the
Chelicerae
Shedding of the exoskeleton in arthropods and other invertebrates
female is still callow, during which time she is unable to eat the male. Eurypterids are a group of chelicerates that became extinct in the Late Permian.
Ecdysis
Genus of Devonian arthropod
like the largest eurypterid, Jaekelopterus, are known from the same formation. Willwerathia was originally thought to be an eurypterid (sea scorpion),
Willwerathia
Braddy (2023) reviews evidence for the predatory abilities of pterygotid eurypterids, and interprets them as likely slow swimming vagrant and ambush predators
2023 in arthropod paleontology
2023_in_arthropod_paleontology
Geologic formation in Norway
The sequence is fining upwards in cyclothems. Tracks attributed to eurypterids have been found in the red siltstone. Turner (1974) interprets the Sundvollen
Sundvollen_Formation
Extinct genus of sea scorpions
Paraeurypterus is a genus of prehistoric eurypterid from the Late Ordovician period. The genus contains one species, P. anatoliensis, known from Şort Tepe
Paraeurypterus
Genus of primitive horseshoe crab
years ago, and are primarily known for its mass death assemblage of eurypterids. The specimen was catalogued in the Yale Peabody Museum as YPM IP 548961
Ciurcalimulus
Extinct genus of arthropods
Alkenopterus is a genus of prehistoric eurypterid. The genus contains two species, A. brevitelson and A. burglahrensis, both from the Devonian of Germany
Alkenopterus
Early Devonian formation with fossil Lagerstätte
Rhineland-Palatinate, Germany. In it Jaekelopterus rhenaniae, a giant eurypterid was discovered. The Klerf Formation, comprising greenish and reddish shales
Klerf_Formation
Brazilian photographer (1944–2025)
Migrations, and Genesis. Pruemopterus salgadoi, an extinct species of eurypterid named after Salgado "Sebastião Salgado (1944–2025) – Morre Sebastião Salgado
Sebastião_Salgado
Extinct genus of scorpion
or in very shallow water, thereby avoiding larger predators such as eurypterids, alongside explaining why seemingly all fossils are likely exuviae. 2019
Eramoscorpius
Extinct family of arthropods
Mycteroptidae or Mycteropidae are a family of eurypterids, a group of extinct chelicerate arthropods commonly known as "sea scorpions". The family is
Mycteroptidae
Geologic formation in Indiana, USA
The Kokomo Formation is a geologic formation in Indiana. It preserves fossils dating back to the Silurian period, most notably sea scorpions. Carcinosoma
Kokomo_Formation
Geological formation in Germany
Markus; Bergmann, Alexandra; Kühl, Gabriele (2017-06-01). "First record of eurypterids (Chelicerata, Eurypterida) from the Lower Devonian (Lower Emsian) Hunsrück
Hunsrück_Slate
Clade of arthropods
group Dekatriata (which in turn includes arachnids, chasmataspidids and eurypterids). Planaterga is defined by the opisthosoma with tergites broadest at
Planaterga
Extinct superfamily of sea scorpions
Dolichopteroidea is an extinct superfamily of eurypterids. The group contains three families: Dolichopteridae, Erieopteridae, and Strobilopteridae. Under
Dolichopteroidea
System that relates geologic strata to time
of aragonite reef builders, including algae and sponges. Freshwater Eurypterids (sea scorpions). On land, Neoptera appear, and Miomoptera show earliest
Geologic_time_scale
Extinct genus of millipedes
Hermann Jordan and Hermann von Meyer compared it with trilobites and eurypterids. The name Arthropleura (from Greek arthron "joint" and pleura "rib")
Arthropleura
conodont genera List of placoderm genera List of chitinozoan genera List of eurypterid genera List of mosasaur genera List of prehistoric annelid genera List
Lists_of_prehistoric_animals
Extinct genus of arthropods
Soligorskopterus is a genus of eurypterid, a group of extinct aquatic arthropods. Fossils of Soligorskopterus have been discovered in deposits from the
Soligorskopterus
Fossil of the Silurian eurypterid ("sea scorpion") Carcinosoma
List of the prehistoric life of Indiana
List_of_the_prehistoric_life_of_Indiana
Extinct genus of arthropods
Clarkeipterus is a genus of prehistoric eurypterid classified as part of the family Dolichopteridae. The genus contains two species, C. otisius and C.
Clarkeipterus
Extinct genus of sea scorpions
Drepanopterus is an extinct genus of eurypterid and the only member of the family Drepanopteridae within the Mycteropoidea superfamily. There are currently
Drepanopterus
List of fauna present at the Mazon Creek fossil beds
Images Adelophthalmus Eurypterida Adelophthalmidae A. mazonensis The only eurypterid from Mazon Creek, and the youngest member of the Eurypterina Euproops
Paleofauna of the Mazon Creek fossil beds
Paleofauna_of_the_Mazon_Creek_fossil_beds
Anatomical feature of appendages of some arthropods for processing food items
called "gnathocoxae"). True gnathobases are absent in arachnids. In eurypterids both pedipalps and all walking legs (pairs of appendages II to VI) have
Gnathobase
Llandovery Konservat–Lagerstätte in a depositional context: the Pentland Hills Eurypterid Bed, Midlothian". Scottish Journal of Geology. 43 (1): 41–50. Bibcode:2007ScJG
List_of_lagerstätten
Extinct genus of arthropods
Parastylonurus is a genus of prehistoric eurypterid. It is the only genus classified in the family Parastylonuridae and contains two species, P. hendersoni
Parastylonurus
Lagerstätte formation in the Kimberley, Western Australia
described from the formation, and arthropods, including phyllocarids and eurypterids are similarly well-preserved. Nautiloids, goniatites and tentaculids
Gogo_Formation
Infraorder of arachnids (spiders)
Carboniferous (about 350 million years ago), but was later found to be a eurypterid. The oldest known mygalomorph is Rosamygale grauvogeli, an avicularoid
Mygalomorphae
EURYPTERID
EURYPTERID
EURYPTERID
EURYPTERID
Girl/Female
Indian
Endless
Boy/Male
Gujarati, Hindu, Indian, Jain, Malayalam, Marathi, Telugu
Deep Contemplation; Reflection through Study
Girl/Female
Muslim
Young and delicate
Girl/Female
Hindu, Indian, Marathi
Row of Lamps
Boy/Male
Buddhist, Hindu, Indian, Marathi, Sanskrit
Fearless
Girl/Female
Indian, Malayalam
Name of Goddess Laxmi; All Easy for them
Girl/Female
Hindu, Indian
God
Boy/Male
Hindu, Indian, Tamil
The Star
Girl/Female
Muslim
Love
Surname or Lastname
English
English : metonymic occupational name for a player of a musical instrument (any musical instrument, not necessarily what is now known as an organ), from Middle English organ (Old French organe, Late Latin organum ‘device’, ‘(musical) instrument’, Greek organon ‘tool’, from ergein ‘to work or do’).English : from a rare medieval personal name, attested only in the Latinized forms Organus (masculine) and Organa (feminine). Its etymology is obscure; it may be a reworking of a Celtic name.French : habitational name from a place in the Hautes Pyrénées named Organ.
EURYPTERID
EURYPTERID
EURYPTERID
EURYPTERID
EURYPTERID