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Juvenites ✝

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	4627415	https://www.gbif.org/species/4627415
PaleoBioDB ID (PBDB)	14193	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=14193

Rank

genus

Taxonomy (GBIF)

Life : Animalia : Mollusca : Cephalopoda : Ammonoidea : Melagathiceratidae : Juvenites

Taxonomy (PBDB)

Life : Animalia : Mollusca : Cephalopoda : Ceratitida : Melagathiceratidae : Juvenites

Taxonomic Status (GBIF)

accepted

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
-	Bilateria
-	Eubilateria	Ax 1987
-	Protostomia	Grobben 1908
-	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca	Linnaeus 1758
class	Cephalopoda	Cuvier 1797
subclass	Ammonoidea
order	Ceratitida	Hyatt 1884
superfamily	Meekoceratoidea	Waagen 1895
family	Melagathiceratidae	Tozer 1971
genus	Juvenites	Smith 1927

Scientific Name

Juvenites Smith, 1927

Name Published In

Prof. Pap. U.S. Geol. Surv., No. 141

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Juvenites	genus	belongs to Celtitidae	stated with evidence	Smith, 1927
Juvenites	genus	belongs to Melagathiceratidae	stated with evidence	Tozer, 1981
Juvenites	genus	belongs to Ceratitida	second hand	Sepkoski, 2002
Juvenites	genus	belongs to Melagathiceratidae	stated with evidence	Brayard et al., 2013

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

252 - 247 Ma
Phanerozoic

Last Recorded Appearance

251 - 247 Ma
Early/Lower Triassic

Motility

actively mobile (based on Ceratitida)

Vision

well-developed (based on Cephalopoda)

Diet

carnivore (based on Ceratitida)

Taphonomy

aragonite (based on Ceratitida)

Primary Reference (PBDB)

J. P. Smith. 1927. Upper Triassic marine invertebrate faunas of North America. United States Geological Survey Professional Paper 141:1-262

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Juvenites besairiei species	accepted (GBIF)	No associated record in PBDB
Juvenites dieneri ✝ species	accepted (GBIF) listed (PBDB)		6	252 Ma Permian	251 Ma Early/Lower Triassic
Juvenites edelsteini ✝ species	accepted (GBIF) listed (PBDB)		2	251 Ma Early/Lower Triassic	251 Ma Early/Lower Triassic
Juvenites kraffti ✝ species	accepted (GBIF) listed (PBDB)		10	252 Ma Permian	251 Ma Early/Lower Triassic
Juvenites laevis ✝ species	accepted (GBIF) listed (PBDB)		1	251 Ma Early/Lower Triassic	251 Ma Early/Lower Triassic
Juvenites multiconstractus ✝ species	accepted (GBIF) listed (PBDB)		1	251 Ma Early/Lower Triassic	251 Ma Early/Lower Triassic
Juvenites septentrionalis ✝ species	accepted (GBIF) listed (PBDB)		15	252 Ma Permian	251 Ma Early/Lower Triassic
Juvenites sinuosus ✝ species	accepted (GBIF) listed (PBDB)		25	252 Ma Permian	251 Ma Early/Lower Triassic
Juvenites spathi ✝ species	accepted (GBIF) listed (PBDB)		16	251 Ma Early/Lower Triassic	251 Ma Early/Lower Triassic
Juvenites tenuicostatus ✝ species	accepted (GBIF) listed (PBDB)		1	251 Ma Early/Lower Triassic	251 Ma Early/Lower Triassic
Juvenites thermarum ✝ species	accepted (GBIF) listed (PBDB)		17	251 Ma Early/Lower Triassic	251 Ma Early/Lower Triassic

Synonymy List

Year	Name and Author
1927	Juvenites Smith
1981	Juvenites Tozer p. 90
1994	Juvenites Tozer p. 53
2002	Juvenites Sepkoski, Jr.
2013	Juvenites Brayard et al. p. 165
2014	Juvenites Shigeta and Nguyen p. 118

References

Smith J. P. (1927) Upper Triassic marine invertebrate faunas of North America, United States Geological Survey Professional Paper 141, 1-262

Tozer E. T. (1981) Triassic Ammonoidea: Classification, evolution and relationship with Permian and Jurassic Forms, The Ammonoidea: The evolution classification, mode of life and geological usefulness of a major fossil group, 66-100

Tozer E. T. (1994) Canadian Triassic Ammonoid Faunas, Geological Survey of Canada Bulletin 467, 1-663

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

Brayard A., Bylund K. G., et al (2013) Systematic paleontology, in Smithian ammonoid faunas from Utah: implications for Early Triassic biostratigraphy, correlation and basinal paleogeography, Swiss Journal of Palaeontology 132

Shigeta Y., Nguyen H. D. (2014) Cephalopods, Olenekian (Early Triassic) stratigraphy and fossil assemblages in northeastern Vietnam. National Museum of Nature and Science Monographs 45, 65-167

GBIF/Paleo Database - via The Interim Register of Marine and Nonmarine Genera

Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera

Sepkoski, J. J., Jr. (2002). A compendium of fossil marine animal genera. Bulletins of American Paleontology. 363, 1-560. - via The Interim Register of Marine and Nonmarine Genera

Prof. Pap. U.S. Geol. Surv., No. 141 - via The Interim Register of Marine and Nonmarine Genera

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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