| 词条 | Tetragramma |
| 释义 |
| name= Tetragramma | image = | regnum = Animalia | phylum = Echinodermata | classis = Echinoidea | ordo = Phymosomatoida | familia = Diplopodiidae | genus = †Tetragramma | genus_authority = L. Agassiz, 1838 | synonyms =
| type_species = Tetragramma variolare | type_species_authority = (Brongniart, 1822) }}Tetragramma is a genus of fossil sea urchins known from the Upper Jurassic (Oxfordian) to the Upper Cretaceous (Turonian).[1] SpeciesSpecies include:[2]
References1. ^{{cite web|url=http://www.nhm.ac.uk/our-science/data/echinoid-directory/taxa/taxon.jsp?id=1424|title=Tetragramma Agassiz, 1838|work=The Echinoid Directory|publisher= Natural History Museum, London|access-date=2017-01-22}} {{Taxonbar|from=Q23005736}}{{Paleo-echinoidea-stub}}2. ^Kroh, A. (2010). Tetragramma L. Agassiz, 1838 †. In: Kroh, A. & Mooi, R. (2015) World Echinoidea Database. Accessed at http://www.marinespecies.org/Echinoidea/aphia.php?p=taxdetails&id=512465 on 2017-01-22 3. ^1 2 {{cite journal|last1=Vaziri|first1= M. R.|last2= Arab|first2= A. L.|year=2013|title= Echinoids of the genus Tetragramma Agassiz (Phymosomatoida) from the Aptian sediments of the Basab region, northwest of Kerman, Iran|journal= Journal of Sciences, Islamic Republic of Iran|volume=24|issue=2|pages=149–155|url=https://jsciences.ut.ac.ir/pdf_32081_7166e1c580c64b1edf8eb503cd1e833a.html}} 4. ^{{cite book|last1=Thompson|first1=William R.|title=Fossil Echinoids of Texas: A Monograph of Fossil Sea Urchins|date=2016|publisher=River Stix|isbn=978-1617042782}} 4 : Phymosomatoida|Prehistoric echinoid genera|Cretaceous echinoderms|Jurassic echinoderms |
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