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Perisphinctes (Arisphinctes) chloroolithicus

Cephalopoda - Ammonitida - Perisphinctidae

Taxonomy
Ammonites chloroolithicus was named by Guembel (1865).

It was recombined as Perisphinctes chloroolithicus by Waagen (1875); it was recombined as Perisphinctes (Perisphinctes) chloroolithicus by Schlegelmilch (1994); it was recombined as Perisphinctes (Arisphinctes) chloroolithicus by Pandey et al. (2012).

Sister species lacking formal opinion data
Arisphinctes ariprepes, Arisphinctes cotovui, Arisphinctes helenae, P. acer, P. africanus, P. albertinus, P. andelotensis, P. andium, P. breviceps, P. colubrinus, P. contiguus, P. dorae, P. effrenatus, P. ernesti, P. gottschei, P. indogermanicus, P. koeneni, P. mairei-matheyi, P. malinowskae, P. orientalis, P. panderi, P. planula, P. polygyratus, P. praestenocyclus, P. progeron, P. quadratus, P. scythicus, P. siemiradzkii, P. siliceus, P. sutneri, P. torquatus, P. transatlanticus, P. trichoplocus, P. vandellii, P. alligatus, P. latilinguatus, P. eucostatus, P. quadratus, P. cotovui, P. helenae, P. maximus, P. pickeringius, P. borealis, P. multicostatus, P. dichotomus, P. duongi, P. arkelli, P. buckmani, P. buckmanni, P. dobrogensis, P. elizabethae, P. episcopalis, P. laisinensis, P. luciae, P. luciaeformis, P. lucieformis, P. marnesiae, P. ouatius, P. rotoides, P. trichoplocus, P. wartaeformis, P. chirchonensis, P. balderus, P. crassissimus, P. cyrilli, P. kranaus, P. prosmiscuus, P. sayni, P. A, P. B, P. laevipickeringius, P. anguinus, P. monteiroi, P. spathi, P. aguilonensis, P. anguiculus, P. arkelli, P. crotalinus, P. nectobrigensis, P. patturatensis, P. paturratensis, P. pulvinus, P. siemirazkii, P. roedereri, P. alatus, P. andelotensis, P. boweni, P. cautisnigrae, P. cuneicostatus, P. densecostatus, P. panthieri, P. pumilus, P. strumatus, P. uptonensis, P. perplanatus, P. kreutzi, P. dorsoplanus, P. dacquei, P. polygyratus
Entered
by M. Clapham on 2023-03-23; modified by P. Scofield on 2024-03-27

Synonymy list
YearName and author
1875Perisphinctes chloroolithicus Waagen p. 198
1994Perisphinctes (Perisphinctes) chloroolithicus Schlegelmilch p. 61 figs. Pl 20, fig 2
2012Perisphinctes (Arisphinctes) chloroolithicus Pandey et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
subclassAmmonoidea()
RankNameAuthor
orderAmmonitidaHaeckel 1866
suborderAmmonitinaHyatt 1889
superfamilyPerisphinctoidea(Steinman 1890)
familyPerisphinctidaeSteinmann 1890
subfamilyPerisphinctinaeSteinmann 1890
genusPerisphinctes()
subgenusArisphinctes(Buckman 1924)
specieschloroolithicus(Guembel 1865)

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

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Diagnosis
ReferenceDiagnosis
D.K. Pandey et al. 2012Shells small to moderately large, incomplete, septate till end, evolute, compressed. Whorl section subquadrate to subtabulate in outline, lanks lat, merging smoothly into rounded venter (Fig. 15A-D). Ornamentation consists of gradually varicostate, sharp, prorsiradiate primary ribs, very ine in nucleus and moderately coarse in middle whorls. Primaries generally bifurcate into iner secondary ribs at ventrolateral region. Bifurcation occasionally also seen in umbilicus. Secondary ribs cross the venter with slight forward-directed convexity. Ribs originate rursiradiately at umbilical suture (Fig. 15E, F). Ribbing density is moderate to dense. Umbilical wall short, distinct, and steep. Constrictions present, at least one per whorl.