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Hydrozoa

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	Not linked to a GBIF record.
PaleoBioDB ID (PBDB)	4596	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=4596

Rank

class (PBDB)

Taxonomy (PBDB)

Life : Animalia : Cnidaria : Hydrozoa

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
phylum	Cnidaria	Hatschek 1888
subphylum	Medusozoa
class	Hydrozoa	Owen 1843

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Hydrozoa	class	belongs to Coelenterata	stated with evidence	Ulrich, 1904
Hydrozoa	class	belongs to Cnidaria	stated with evidence	Barnes, 1998
Hydrozoa	class	belongs to Cnidaria	second hand	Sepkoski, 2002
Hydrozoa	class	belongs to Medusozoa	stated with evidence	Kayal et al., 2013

Status (PBDB)

extant

Taxon Size (PBDB)

160

Extant Size (PBDB)

23 (14%)

First Recorded Appearance

635 - 541 Ma
Neoproterozoic

Motility

stationary, attached (based on Hydrozoa)

Vision

blind (based on Hydrozoa)

Diet

carnivore, suspension feeder (based on Hydrozoa)

Ecospace Comments

COMMENTS: Includes erect, surficial, and pelagic tiering, non-motile attached, facultatively motile attach, non-motile unattached, and fully motile slow motility, and suspension-feeding, predation, photosymbiosis.

Taphonomy

aragonite (based on Hydrozoa)

Primary Reference (PBDB)

J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Actinulida order	accepted (GBIF) listed (PBDB)				0 Ma Extant
Hydrocorallinae order	listed (PBDB)		2	247 Ma Early/Lower Triassic	216 Ma Late/Upper Triassic
Hydroida order	listed (PBDB)		29	520 Ma Cambrian	0 Ma Extant
Lemniscaterina ✝ order	listed (PBDB)		13	247 Ma Early/Lower Triassic	232 Ma Late/Upper Triassic
Limnomedusae ✝ order	accepted (GBIF) listed (PBDB)		3	247 Ma Early/Lower Triassic	247 Ma Early/Lower Triassic
Milleporina order	listed (PBDB)	Fire Coral	165	388 Ma Middle Devonian	0 Ma Extant
Siphonophorida order	listed (PBDB)		2	427 Ma Silurian	0 Ma Extant
Sphaeractinida ✝ order	listed (PBDB)		7	105 Ma Early/Lower Cretaceous	99.6 Ma Late/Upper Cretaceous
Spongiomorphida ✝ order	listed (PBDB)		129	254 Ma Permian	56.0 Ma Paleocene
Stylasterina order	listed (PBDB)	Lace Coral	40	70.6 Ma Late/Upper Cretaceous	0 Ma Extant
Trachylinida order	listed (PBDB)
Tubulariae order	listed (PBDB)		2	85.8 Ma Late/Upper Cretaceous	0 Ma Extant
Chondrophorina ✝ suborder	listed (PBDB)
Milleporidae family	accepted (GBIF) listed (PBDB)		2	269 Ma Permian	5.33 Ma Miocene
Delheidia ✝ genus	doubtful (GBIF) listed (PBDB)		1	55.8 Ma Eocene	55.8 Ma Eocene
Eoporpita ✝ genus	accepted (GBIF) listed (PBDB)		8	635 Ma Neoproterozoic	635 Ma Neoproterozoic
Fistulella ✝ genus	listed (PBDB)		10	427 Ma Silurian	409 Ma Early/Lower Devonian
Graptogeitonia ✝ genus	doubtful (GBIF) listed (PBDB)
Likinia ✝ genus	doubtful (GBIF) listed (PBDB)
Ovatoscutum ✝ genus	accepted (GBIF) listed (PBDB)		3	635 Ma Neoproterozoic	635 Ma Neoproterozoic
Plumalina ✝ genus	accepted (GBIF) listed (PBDB)		6	384 Ma Middle Devonian	365 Ma Late/Upper Devonian
Rhizostromella ✝ genus	doubtful (GBIF) listed (PBDB)
Roseoporella ✝ genus	doubtful (GBIF) listed (PBDB)		2	388 Ma Middle Devonian	388 Ma Middle Devonian
Spriggia ✝ genus	doubtful (GBIF) listed (PBDB)		2	635 Ma Neoproterozoic	635 Ma Neoproterozoic
Stoliczkaria ✝ genus	doubtful (GBIF) listed (PBDB)
Stoliczkiella ✝ genus	doubtful (GBIF) listed (PBDB)
Tubuloparietes ✝ genus	doubtful (GBIF) listed (PBDB)

Synonymy List

Year	Name and Author
1843	Hydrozoa Owen
1904	Hydrozoa Ulrich p. 433
1998	Hydrozoa Barnes p. 183
2002	Hydrozoa Sepkoski, Jr.
2013	Hydrozoa Kayal et al.

References

Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560

Ulrich E. O. (1904) Hydrozoa, Maryland Geological Survey Miocene Text, 433-437

Kayal E., Roure B., et al (2013) Cnidarian phylogenetic relationships as revealed by mitogenomics, BMC Evolutionary Biology 13, 5

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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