Hoplites dentatus

Determinations of some ammonites Hoplites dentatus:

This work is only one modest comparative of my specimens with scientific documentation in my possession.
In order to compare the specimens, we will use the dimensional criteria below.

Work on "HOPLITES DENTATUS???" below

Now let us apply these criteria to 10 numbered specimens whose 9 specimens are indexed in the following table. The N°10 specimen does not form part of measurements, because I have only the photograph, and I do not have his exact dimensions on the other hand, it will be useful to us for certain comparisons. A click on the mini-photographs enables you to have a complete sight of each specimen on scale 1


N°1	N°2	N°3	N°4	N°5

N°6	N°7	N°8	N°9	N°10

Measurements (in millimetres) raised on 9 ammonites
N°	D	L	L/D	H1	L/H1	H2	H2/H1	O	r	R	r/R	N
1	110	40	0,36	45	0,89	33	0,73	31	12	24	0,50	15
2	110	36	0,33	40	0,90	30	0,75	33	13	23	0,57	17
3	110	43	0,39	47	0,91	33	0,70	30	11	23	0,48	14
4	75	30	0,4	30	1,00	23	0,77	21	8	16	0,50	15
5	85	30	0,35	34	0,88	25	0,74	24	9	18	0,50	17
6	108	34	0,31	43	0,79	35	0,81	34	11	22	0,50	18
7	85	26	0,31	35	0,74	26	0,74	23	10	21	0,48	16
8	72	22	0,31	29	0,76	23	0,793	21	7	14	0,5	15
9	96	35	0,36	45	0,78	35	0,778	23	13	21	0,62	20

Now let us see the graph of all these measurements.
L/H1	largeur/hautor report/ratio of the cabin of dwelling
H2/H1	the closer this report/ratio is to 1, the more the tubers forms an edge abrupt around the umbilical point
r/R	quantify the covering of rolling up on the preceding lathe
L/D	quantify a concept of more or less squat ammonite, epaisse, just like report/ratio L/H1