Acronym	croc
Name	tetracontoctirhombated tetracontoctachoron
Cross sections	©
Circumradius	sqrt[6+3 sqrt(2)] = 3.200413
Colonel of regiment	(is itself locally convex – uniform polychoral members: by cells: cotco girco croc 48 48 )
Dihedral angles	at {8/3} between cotco and cotco:   135° at {8} between cotco and girco:   135° at {6} between cotco and girco:   120° at {4} between girco and girco:   90°
Face vector	1152, 2304, 1104, 96
Confer	general polytopal classes: Wythoffian polychora
External links

As abstract polytope croc is isomorphic to coqroc, thereby interchanging octagons and octagrams, resp. replacing the girco by quitco.

Incidence matrix according to Dynkin symbol

x3x4x3x4*a4/3*c

. . . .         | 1152 |   1   1   1   1 |   1   1   1   1   1   1 |  1  1  1  1
----------------+------+-----------------+-------------------------+------------
x . . .         |    2 | 576   *   *   * |   1   1   1   0   0   0 |  1  1  1  0
. x . .         |    2 |   * 576   *   * |   1   0   0   1   1   0 |  1  1  0  1
. . x .         |    2 |   *   * 576   * |   0   1   0   1   0   1 |  1  0  1  1
. . . x         |    2 |   *   *   * 576 |   0   0   1   0   1   1 |  0  1  1  1
----------------+------+-----------------+-------------------------+------------
x3x . .         |    6 |   3   3   0   0 | 192   *   *   *   *   * |  1  1  0  0
x . x . *a4/3*c |    8 |   4   0   4   0 |   * 144   *   *   *   * |  1  0  1  0
x . . x4*a      |    8 |   4   0   0   4 |   *   * 144   *   *   * |  0  1  1  0
. x4x .         |    8 |   0   4   4   0 |   *   *   * 144   *   * |  1  0  0  1
. x . x         |    4 |   0   2   0   2 |   *   *   *   * 288   * |  0  1  0  1
. . x3x         |    6 |   0   0   3   3 |   *   *   *   *   * 192 |  0  0  1  1
----------------+------+-----------------+-------------------------+------------
x3x4x . *a4/3*c ♦   48 |  24  24  24   0 |   8   6   0   6   0   0 | 24  *  *  *
x3x . x4*a      ♦   48 |  24  24   0  24 |   8   0   6   0  12   0 |  * 24  *  *
x . x3x4*a4/3*c ♦   48 |  24   0  24  24 |   0   6   6   0   0   8 |  *  * 24  *
. x4x3x         ♦   48 |   0  24  24  24 |   0   0   0   6  12   8 |  *  *  * 24

or
. . . .            | 1152 |    2    2 |   2   1   2   1 |  2  2
-------------------+------+-----------+-----------------+------
x . . .          & |    2 | 1152    * |   1   1   1   0 |  2  1
. x . .          & |    2 |    * 1152 |   1   0   1   1 |  1  2
-------------------+------+-----------+-----------------+------
x3x . .          & |    6 |    3    3 | 384   *   *   * |  1  1
x . x . *a4/3*c    |    8 |    8    0 |   * 144   *   * |  2  0
x . . x4*a       & |    8 |    4    4 |   *   * 288   * |  1  1
. x . x            |    4 |    0    4 |   *   *   * 288 |  0  2
-------------------+------+-----------+-----------------+------
x3x4x . *a4/3*c  & ♦   48 |   48   24 |   8   6   6   0 | 48  *
x3x . x4*a       & ♦   48 |   24   48 |   8   0   6  12 |  * 48