Hildoceratoidea, formerly Hildoceratacaea, is a superfamily of compressed or planulate ammonites, some tending to develop acute outer rims; generally with arcuate or sigmoidal ribs. Aptichus were found in place are double-valved.[3]
Hildoceratoidea is an upper Lower to lower Middle Jurassic group belonging to the Ammonitina that unites the Hildoceratidae, Hammatoceratidae, Graphoceratidae, and Sonniniidae.[3] In some taxonomies the name Phymatoceratidae is substituted for the Hammatoceratidae[4]
Hildoceratidae, which is the ancestral family, is derived from the Acanthopleuroceratinae, a subfamily in the Eoderoceratoidean family, Polyorphitidae. The Stephanoceratoidea, Perisphinctoidea, and Haploceratoidea have their source in the Hammatoceratidae which is derived from the Hildoceratidae.[3]
Approximate timeline of Hildoceratoidea families with their evolutionary relationships.
Referencesedit
^Kovács, Z.; Géczy, B. (2008). (PDF). 125th Anniversary of the Department of Palaeontology at Budapest University – A Jubilee Volume Hantkeniana. 6: 57–108. Archived from the original (PDF) on 2011-07-16. Retrieved 2010-11-25.
hildoceratoidea, formerly, hildoceratacaea, superfamily, compressed, planulate, ammonites, some, tending, develop, acute, outer, rims, generally, with, arcuate, sigmoidal, ribs, aptichus, were, found, place, double, valved, temporal, range, early, middle, jura. Hildoceratoidea formerly Hildoceratacaea is a superfamily of compressed or planulate ammonites some tending to develop acute outer rims generally with arcuate or sigmoidal ribs Aptichus were found in place are double valved 3 HildoceratoideaTemporal range Early Middle Jurassic Pliensbachian Bajocian PreꞒ Ꞓ O S D C P T J K Pg NHarpoceras exaratumScientific classificationDomain EukaryotaKingdom AnimaliaPhylum MolluscaClass CephalopodaSubclass AmmonoideaOrder AmmonitidaSuborder AmmonitinaSuperfamily HildoceratoideaHyatt 1867Families 2 Erycitidae 1 Hildoceratidae Hammatoceratidae Graphoceratidae SonniniidaeHildoceratoidea is an upper Lower to lower Middle Jurassic group belonging to the Ammonitina that unites the Hildoceratidae Hammatoceratidae Graphoceratidae and Sonniniidae 3 In some taxonomies the name Phymatoceratidae is substituted for the Hammatoceratidae 4 Hildoceratidae which is the ancestral family is derived from the Acanthopleuroceratinae a subfamily in the Eoderoceratoidean family Polyorphitidae The Stephanoceratoidea Perisphinctoidea and Haploceratoidea have their source in the Hammatoceratidae which is derived from the Hildoceratidae 3 Approximate timeline of Hildoceratoidea families with their evolutionary relationships References edit Kovacs Z Geczy B 2008 Upper Toarcian Middle Aalenian Jurassic Erycitinae SPATH Ammonitina from the Gerecse Mts Hungary PDF 125th Anniversary of the Department of Palaeontology at Budapest University A Jubilee Volume Hantkeniana 6 57 108 Archived from the original PDF on 2011 07 16 Retrieved 2010 11 25 Paleobiology Database Hildoceratoidea Retrieved 2017 10 19 a b c Arkell et al Treatise on Invertebrate Paleontology Part L Ammonoidea 1956 Taxonomicon Hildocerataceae nbsp This Ammonitina related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Hildoceratoidea amp oldid 1020412105, wikipedia, wiki, book, books, library,
