Turrilites: Difference between revisions

Turrilites; Temporal range: Cenomanian–Turonian PreꞒ Ꞓ O S D C P T J K Pg N
	Turrilites costatus from Rouen, France, on display at Galerie de paléontologie et d'anatomie comparée, Paris
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ancyloceratina ?
Superfamily:	Turrilitaceae
Family:	Turrilitidae
Genus:	Turrilites; Lamarck, 1801

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Revision as of 12:05, 24 May 2014

Turrilites is a helically coiled ammonoid cephalopod from the lower part of the Upper Cretaceous (Cenomanian and Turonian); generally included in the Ancyloceratina. Previously (Arkell, 1957) it was included in the ammonoid suborder, Lytoceratina.

The shell of Turrilites is tightly wound in a high trochospiral, with an acute angle at the apex. Ribs are weak to strong and may have 3 or 4 rows of equal numbers of tubercles. Thought to be derived from Mariella. Includes three subgenera.

Subgenera and species

Turrilites has three subgenera.

Turrilites (Turrilites) Lamarck 1801
- Turrilites acutus Passy 1832
- Turrilites costatus Lamarck 1801
- Turrilites scheuchzerianus Bosc 1801

Turrilites (Euturrilites) Breistroffer 1953 (ammonite

Turrilites (Mesoturrilites)

Subgenus Turrilites has weak ribs and strong tubercles. Subgenus Euturrilites has strong ribs, commonly depressed in middle, especially on early whorls, and no tubercles. Subgenus Mesoturrilites has almost no ribs and clavate tubercles that tend to form spiral ridges.

References

Arkell et al., Mesozoic Ammonoidea (L222); Treatise on Invertebrate Paleontology Part L, Ammonoidea. Geological Soc. of America and Univ Kansas Press.
The Paleobiology Database Turrilites entry

@@ Line 2: / Line 2: @@
 {{Taxobox
 | fossil_range = {{fossilrange|Cenomanian|Turonian}}
-| image = Turrilites acutus.png
+| image = Turrilitidae - Turrilites costatus.JPG
-| image_caption = ''Turrilites acutus'' from [[Cap Blanc Nez]], France
+| image_caption = ''Turrilites costatus'' from [[Rouen]], France, on display at [[Galerie de paléontologie et d'anatomie comparée]], Paris
 | regnum = [[Animal]]ia
 | phylum = [[Mollusca]]
@@ Line 18: / Line 18: @@
 The shell of ''Turrilites'' is tightly wound in a high trochospiral, with an acute angle at the apex. Ribs are weak to strong and may have 3 or 4 rows of equal numbers of tubercles. Thought to be derived from ''[[Mariella]]''. Includes three subgenera.
+==Subgenera and species==
-''Turrilites'' has three subgenera. Subgenus ''Turrilites''  has weak ribs and strong tubercles. Subgenus ''Euturrilites'' has strong ribs, commonly depressed in middle, especially on early whorls, and no tubercles. Subgenus ''Mesoturrilites'' has almost no ribs and clavate tubercles that tend to form spiral ridges.
+''Turrilites'' has three subgenera.
+* ''[[Turrilites (Turrilites)]]'' Lamarck 1801
+** ''[[Turrilites acutus]]'' Passy 1832
+** ''[[Turrilites costatus]]'' Lamarck 1801
+** ''[[Turrilites scheuchzerianus ]]'' Bosc 1801
+* ''[[Turrilites (Euturrilites) ]]'' Breistroffer 1953 (ammonite
+* ''[[Turrilites (Mesoturrilites)]]
+Subgenus ''Turrilites''  has weak ribs and strong tubercles. Subgenus ''Euturrilites'' has strong ribs, commonly depressed in middle, especially on early whorls, and no tubercles. Subgenus ''Mesoturrilites'' has almost no ribs and clavate tubercles that tend to form spiral ridges.
 ==References==